- boundaryThe list of boundary IDs from the mesh where this object applies
C++ Type:std::vector<BoundaryName>
Controllable:No
Description:The list of boundary IDs from the mesh where this object applies
- variableThe name of the variable that this residual object operates on
C++ Type:NonlinearVariableName
Unit:(no unit assumed)
Controllable:No
Description:The name of the variable that this residual object operates on
GapHeatTransfer
Transfers heat across a gap between two surfaces dependent on the gap geometry specified.
Description
GapHeatTransfer calculates the amount of heat transferred across unmeshed gaps between two different blocks.
The quadrature option is generally recommended for most models. With this option, heat flux is computed and applied as an integrated boundary condition at the quadrature points on both faces. Use of the quadrature options generally gives smoother results, although there can be small differences in the heat flux on the two surfaces.
It is also important to use the appropriate gap_geometry_type parameter (PLATE, CYLINDER, or SPHERE) for the model geometry.
Two-dimensional Cartesian geometries are not restricted to be in or parallel to the X-Y coordinate plane.
See GeometricSearchData for more information on the treatment of geometric pairing between boundaries across a gap.
Example Input syntax
[ThermalContact<<<{"href": "../../syntax/ThermalContact/index.html"}>>>]
[./left_to_right]
emissivity_primary = 0
emissivity_secondary = 0
secondary = leftright
quadrature = true
primary = rightleft
variable = temp
type = GapHeatTransfer
[../]
[]Input Parameters
- appended_property_nameName appended to material properties to make them unique
C++ Type:std::string
Controllable:No
Description:Name appended to material properties to make them unique
- cylinder_axis_point_1Start point for line defining cylindrical axis
C++ Type:libMesh::VectorValue<double>
Unit:(no unit assumed)
Controllable:No
Description:Start point for line defining cylindrical axis
- cylinder_axis_point_2End point for line defining cylindrical axis
C++ Type:libMesh::VectorValue<double>
Unit:(no unit assumed)
Controllable:No
Description:End point for line defining cylindrical axis
- displacementsThe displacements appropriate for the simulation geometry and coordinate system
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The displacements appropriate for the simulation geometry and coordinate system
- gap_distanceDistance across the gap
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:Distance across the gap
- gap_geometry_typeGap calculation type. Choices are: PLATE CYLINDER SPHERE
C++ Type:MooseEnum
Options:PLATE, CYLINDER, SPHERE
Controllable:No
Description:Gap calculation type. Choices are: PLATE CYLINDER SPHERE
- gap_tempTemperature on the other side of the gap
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:Temperature on the other side of the gap
- matrix_onlyFalseWhether this object is only doing assembly to matrices (no vectors)
Default:False
C++ Type:bool
Controllable:No
Description:Whether this object is only doing assembly to matrices (no vectors)
- max_gap1e+06A maximum gap size
Default:1e+06
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:A maximum gap size
- min_gap1e-06A minimum gap size
Default:1e-06
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:A minimum gap size
- min_gap_order0Order of the Taylor expansion below min_gap
Default:0
C++ Type:unsigned int
Controllable:No
Description:Order of the Taylor expansion below min_gap
- orderFIRSTThe finite element order
Default:FIRST
C++ Type:MooseEnum
Options:CONSTANT, FIRST, SECOND, THIRD, FOURTH
Controllable:No
Description:The finite element order
- paired_boundaryThe boundary to be penetrated
C++ Type:BoundaryName
Controllable:No
Description:The boundary to be penetrated
- quadratureFalseWhether or not to do Quadrature point based gap heat transfer. If this is true then gap_distance and gap_temp should NOT be provided (and will be ignored) however paired_boundary IS then required.
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not to do Quadrature point based gap heat transfer. If this is true then gap_distance and gap_temp should NOT be provided (and will be ignored) however paired_boundary IS then required.
- sphere_originOrigin for sphere geometry
C++ Type:libMesh::VectorValue<double>
Unit:(no unit assumed)
Controllable:No
Description:Origin for sphere geometry
- warningsFalseWhether to output warning messages concerning nodes not being found
Default:False
C++ Type:bool
Controllable:No
Description:Whether to output warning messages concerning nodes not being found
Optional Parameters
- absolute_value_vector_tagsThe tags for the vectors this residual object should fill with the absolute value of the residual contribution
C++ Type:std::vector<TagName>
Controllable:No
Description:The tags for the vectors this residual object should fill with the absolute value of the residual contribution
- extra_matrix_tagsThe extra tags for the matrices this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the matrices this Kernel should fill
- extra_vector_tagsThe extra tags for the vectors this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the vectors this Kernel should fill
- matrix_tagssystemThe tag for the matrices this Kernel should fill
Default:system
C++ Type:MultiMooseEnum
Options:nontime, system
Controllable:No
Description:The tag for the matrices this Kernel should fill
- vector_tagsnontimeThe tag for the vectors this Kernel should fill
Default:nontime
C++ Type:MultiMooseEnum
Options:nontime, time
Controllable:No
Description:The tag for the vectors this Kernel should fill
Contribution To Tagged Field Data Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- diag_save_inThe name of auxiliary variables to save this BC's diagonal jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
C++ Type:std::vector<AuxVariableName>
Unit:(no unit assumed)
Controllable:No
Description:The name of auxiliary variables to save this BC's diagonal jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:Yes
Description:Set the enabled status of the MooseObject.
- implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
- save_inThe name of auxiliary variables to save this BC's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
C++ Type:std::vector<AuxVariableName>
Unit:(no unit assumed)
Controllable:No
Description:The name of auxiliary variables to save this BC's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
- search_methodnearest_node_connected_sidesChoice of search algorithm. All options begin by finding the nearest node in the primary boundary to a query point in the secondary boundary. In the default nearest_node_connected_sides algorithm, primary boundary elements are searched iff that nearest node is one of their nodes. This is fast to determine via a pregenerated node-to-elem map and is robust on conforming meshes. In the optional all_proximate_sides algorithm, primary boundary elements are searched iff they touch that nearest node, even if they are not topologically connected to it. This is more CPU-intensive but is necessary for robustness on any boundary surfaces which has disconnections (such as Flex IGA meshes) or non-conformity (such as hanging nodes in adaptively h-refined meshes).
Default:nearest_node_connected_sides
C++ Type:MooseEnum
Options:nearest_node_connected_sides, all_proximate_sides
Controllable:No
Description:Choice of search algorithm. All options begin by finding the nearest node in the primary boundary to a query point in the secondary boundary. In the default nearest_node_connected_sides algorithm, primary boundary elements are searched iff that nearest node is one of their nodes. This is fast to determine via a pregenerated node-to-elem map and is robust on conforming meshes. In the optional all_proximate_sides algorithm, primary boundary elements are searched iff they touch that nearest node, even if they are not topologically connected to it. This is more CPU-intensive but is necessary for robustness on any boundary surfaces which has disconnections (such as Flex IGA meshes) or non-conformity (such as hanging nodes in adaptively h-refined meshes).
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Controllable:No
Description:The seed for the master random number generator
- skip_execution_outside_variable_domainFalseWhether to skip execution of this boundary condition when the variable it applies to is not defined on the boundary. This can facilitate setups with moving variable domains and fixed boundaries. Note that the FEProblem boundary-restricted integrity checks will also need to be turned off if using this option
Default:False
C++ Type:bool
Controllable:No
Description:Whether to skip execution of this boundary condition when the variable it applies to is not defined on the boundary. This can facilitate setups with moving variable domains and fixed boundaries. Note that the FEProblem boundary-restricted integrity checks will also need to be turned off if using this option
- use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Advanced Parameters
- prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
- use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Default:False
C++ Type:bool
Controllable:No
Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Material Property Retrieval Parameters
Input Files
- (modules/heat_transfer/test/tests/gap_heat_transfer_mortar/bc_gap_heat_transfer_displaced_radiation.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_radiation/cylinder.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/1D.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/sphere2DRZ.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_mortar/large_gap_heat_transfer_test_cylinder.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/gap_conductivity_property.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/planar_yz.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_balance/large_gap_heat_transfer_test_sphere.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/corner_wrap.i)
- (modules/combined/test/tests/umat/gap_heat_transfer_umat.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl2D.i)
- (modules/combined/test/tests/gap_heat_transfer_convex/gap_heat_transfer_convex.i)
- (modules/combined/test/tests/generalized_plane_strain_tm_contact/generalized_plane_strain_tm_contact.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_mortar/gap_heat_transfer_sphere3D.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_mortar/bc_gap_heat_transfer_displaced_conduction.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfectQ8.i)
- (modules/combined/test/tests/break_mesh_interface_contact/break_mesh_interface_contact.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl2D_yz.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_it_plot_test.i)
- (modules/heat_transfer/test/tests/heat_conduction/3d_quadrature_gap_heat_transfer/moving.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfectQ9.i)
- (modules/heat_transfer/test/tests/recover/ad_recover.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl3D.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/planar_xy.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_radiation/sphere.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_mortar/large_gap_heat_transfer_test_sphere.i)
- (modules/heat_transfer/test/tests/meshed_gap_thermal_contact/meshed_gap_thermal_contact_constant_conductance.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_radiation/gap_heat_transfer_radiation_test.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl2D_xz.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfect_split.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/sphere3D.i)
- (modules/combined/test/tests/gap_heat_transfer_jac/two_blocks.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_rz_test.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_balance/large_gap_heat_transfer_test_cylinder.i)
- (modules/heat_transfer/test/tests/meshed_gap_thermal_contact/meshed_annulus_thermal_contact.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_syntax.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_test.i)
- (modules/heat_transfer/test/tests/heat_conduction/3d_quadrature_gap_heat_transfer/nonmatching.i)
- (modules/combined/test/tests/gap_heat_transfer_convex/gap_heat_transfer_convex_gap_offsets.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_rspherical.i)
- (modules/heat_transfer/test/tests/meshed_gap_thermal_contact/meshed_gap_thermal_contact.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_mortar/large_gap_heat_transfer_test_rz_cylinder.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/second_order.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfect.i)
- (modules/heat_transfer/test/tests/heat_conduction/3d_quadrature_gap_heat_transfer/second.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_mortar/gap_heat_transfer_3D.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/nonmatching.i)
- (modules/heat_transfer/test/tests/heat_conduction/min_gap/min_gap.i)
- (modules/heat_transfer/test/tests/multiple_contact_pairs/multiple_contact_pairs.i)
- (modules/heat_transfer/test/tests/recover/recover.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_balance/large_gap_heat_transfer_test_rz_cylinder.i)
- (modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/moving.i)
- (modules/heat_transfer/test/tests/gap_heat_transfer_htonly/planar_xz.i)
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/nonmatching.i)
[Mesh]
file = nonmatching.e
[]
[Variables]
[./temp]
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 1000
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
emissivity_primary = 0
emissivity_secondary = 0
secondary = leftright
quadrature = true
primary = rightleft
variable = temp
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[./gap_conductance]
type = GenericConstantMaterial
prop_names = 'gap_conductance gap_conductance_dT'
boundary = 'leftright rightleft'
prop_values = '1 0'
[../]
[]
[Postprocessors]
[./left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = leftright
diffusivity = thermal_conductivity
[../]
[./right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = rightleft
diffusivity = thermal_conductivity
[../]
[]
[Executioner]
type = Steady
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_mortar/bc_gap_heat_transfer_displaced_radiation.i)
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
[file]
type = FileMeshGenerator
file = 2blk-gap.e
[]
allow_renumbering = false
[]
[Problem]
kernel_coverage_check = false
material_coverage_check = false
[]
[Variables]
[temp]
order = FIRST
family = LAGRANGE
block = '1 2'
[]
[disp_x]
order = FIRST
family = LAGRANGE
block = '1 2'
[]
[disp_y]
order = FIRST
family = LAGRANGE
block = '1 2'
[]
[]
[Materials]
[left]
type = ADHeatConductionMaterial
block = 1
thermal_conductivity = 0.01
specific_heat = 1
[]
[right]
type = ADHeatConductionMaterial
block = 2
thermal_conductivity = 0.005
specific_heat = 1
[]
[]
[Kernels]
[hc_displaced_block]
type = ADHeatConduction
variable = temp
use_displaced_mesh = true
block = '1'
[]
[hc_undisplaced_block]
type = ADHeatConduction
variable = temp
use_displaced_mesh = false
block = '2'
[]
[disp_x]
type = Diffusion
variable = disp_x
block = '1 2'
[]
[disp_y]
type = Diffusion
variable = disp_y
block = '1 2'
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 100
secondary = 101
emissivity_primary = 1.0
emissivity_secondary = 1.0
gap_conductivity = 1.0e-12
quadrature = true
[]
[]
[BCs]
[left]
type = DirichletBC
variable = temp
boundary = 'left'
value = 100
[]
[right]
type = DirichletBC
variable = temp
boundary = 'right'
value = 0
[]
[left_disp_x]
type = DirichletBC
preset = false
variable = disp_x
boundary = 'left'
value = .1
[]
[right_disp_x]
type = DirichletBC
preset = false
variable = disp_x
boundary = 'right'
value = 0
[]
[bottom_disp_y]
type = DirichletBC
preset = false
variable = disp_y
boundary = 'bottom'
value = 0
[]
[]
[Preconditioning]
[fmp]
type = SMP
full = true
solve_type = 'NEWTON'
[]
[]
[Executioner]
type = Steady
nl_rel_tol = 1e-11
nl_abs_tol = 1.0e-10
[]
[VectorPostprocessors]
[NodalTemperature]
type = NodalValueSampler
sort_by = id
boundary = '100 101'
variable = 'temp'
[]
[]
[Outputs]
exodus = false
csv = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_radiation/cylinder.i)
#
# This problem is one of radiation boundary conditions between two
# cylindrical surfaces.
#
# S(T1^4 - T2^4) R1
# flux1 = - ---------------- and flux2 = -flux1 * --
# 1 1 - e2 R1 R2
# -- + ------ * --
# e1 e2 R2
#
# where S is the Stefan Boltzmann constant 5.67e-8 W/m^2/K^4
# T1 is the temperature on the left surface 278 K
# T2 is the temperature on the right surface 333 K
# e1 is the emissivity for the left surface 0.8
# e2 is the emissivity for the left surface 0.9
# R1 is the radius of the inner surface 0.1 m
# R2 is the radius of the outer surface 0.11 m
#
# Flux1:
# Exact Code
# ------------- -------------
# -265.29 W/m^2 -265.26 W/m^2
#
# Flux2:
# Exact Code
# ------------- -------------
# 241.26 W/m^2 241.15 W/m^2
#
thick = 0.01
R1 = 0.1
R2 = 0.11
[GlobalParams]
order = second
family = lagrange
[]
[Mesh]
coord_type = RZ
[mesh1]
type = GeneratedMeshGenerator
dim = 2
elem_type = quad8
nx = 4
ny = 1
xmin = '${fparse R1 - thick}'
xmax = '${R1}'
ymin = 0
ymax = '${R1}'
boundary_name_prefix = left
[]
[mesh2]
type = GeneratedMeshGenerator
dim = 2
elem_type = quad8
nx = 4
ny = 1
xmin = '${R2}'
xmax = '${fparse R2 + thick}'
ymin = 0
ymax = '${R1}'
boundary_id_offset = 4
boundary_name_prefix = right
[]
[final]
type = CombinerGenerator
inputs = 'mesh1 mesh2'
[]
[]
[Variables]
[temperature]
[]
[]
[Kernels]
[heat_conduction]
type = HeatConduction
variable = temperature
[]
[]
[BCs]
[left]
type = DirichletBC
variable = temperature
boundary = left_left
value = 278
[]
[right]
type = DirichletBC
variable = temperature
boundary = right_right
value = 333
[]
[]
[Materials]
[heat]
type = HeatConductionMaterial
thermal_conductivity = 200 # W/m/K
specific_heat = 4.2e5
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temperature
primary = left_right
secondary = right_left
emissivity_primary = 0.8
emissivity_secondary = 0.9
quadrature = true
gap_conductivity = 1e-40 # requires a positive value
gap_geometry_type = cylinder
[]
[]
[Functions]
[analytic_flux_1]
type = ParsedFunction
symbol_names = 'S T1 T2 e1 e2 R1 R2'
symbol_values = '5.67e-8 278 333 0.8 0.9 ${R1} ${R2}'
expression = 'T14 := T1*T1*T1*T1;
T24 := T2*T2*T2*T2;
S*(T14-T24)/(1/e1+(1-e2)/e2*R1/R2)'
[]
[analytic_flux_2]
type = ParsedFunction
symbol_names = 'S T1 T2 e1 e2 R1 R2'
symbol_values = '5.67e-8 278 333 0.8 0.9 ${R1} ${R2}'
expression = 'T14 := T1*T1*T1*T1;
T24 := T2*T2*T2*T2;
-S*(T14-T24)/(1/e1+(1-e2)/e2*R1/R2)*R1/R2'
[]
[]
[Postprocessors]
[code_flux_1]
type = SideDiffusiveFluxAverage
variable = temperature
boundary = left_right
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[]
[analytic_flux_1]
type = FunctionValuePostprocessor
function = analytic_flux_1
execute_on = 'initial timestep_end'
[]
[error_1]
type = ParsedPostprocessor
pp_names = 'code_flux_1 analytic_flux_1'
expression = '(analytic_flux_1 - code_flux_1)/analytic_flux_1*100'
execute_on = 'initial timestep_end'
[]
[code_flux_2]
type = SideDiffusiveFluxAverage
variable = temperature
boundary = right_left
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[]
[analytic_flux_2]
type = FunctionValuePostprocessor
function = analytic_flux_2
execute_on = 'initial timestep_end'
[]
[error_2]
type = ParsedPostprocessor
pp_names = 'code_flux_2 analytic_flux_2'
expression = '(analytic_flux_2 - code_flux_2)/analytic_flux_2*100'
execute_on = 'initial timestep_end'
[]
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = newton
num_steps = 1
dt = 1
end_time = 1
nl_abs_tol = 1e-12
nl_rel_tol = 1e-10
[]
[Outputs]
csv = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/1D.i)
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
coord_type = RZ
[fred]
type = GeneratedMeshGenerator
dim = 1
nx = 25
xmin = 0
xmax = 1
boundary_name_prefix = left
elem_type = edge3
[]
[wilma]
type = GeneratedMeshGenerator
dim = 1
nx = 25
xmin = 2
xmax = 3
boundary_id_offset = 10
boundary_name_prefix = right
elem_type = edge3
[]
[combine]
type = CombinerGenerator
inputs = 'fred wilma'
[]
[]
[Functions]
[temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[]
[]
[Variables]
[temp]
initial_condition = 100
[]
[]
[Kernels]
[heat]
type = HeatConduction
variable = temp
[]
[]
[BCs]
[temp_far_left]
type = FunctionDirichletBC
boundary = left_left
variable = temp
function = temp
[]
[temp_far_right]
type = DirichletBC
boundary = right_right
variable = temp
value = 100
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = right_left
secondary = left_right
emissivity_primary = 0
emissivity_secondary = 0
[]
[]
[Materials]
[heat]
type = HeatConductionMaterial
specific_heat = 1.0
thermal_conductivity = 1.0e6
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_abs_tol = 1e-3
nl_rel_tol = 1e-12
l_tol = 1e-8
l_max_its = 100
start_time = 0.0
dt = 2e-1
end_time = 2.0
[]
[Postprocessors]
[temp_left]
type = SideAverageValue
boundary = left_right
variable = temp
execute_on = 'initial timestep_end'
[]
[temp_right]
type = SideAverageValue
boundary = right_left
variable = temp
execute_on = 'initial timestep_end'
[]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/sphere2DRZ.i)
#
# 2DRZ Spherical Gap Heat Transfer Test.
#
# This test exercises 2D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of an inner solid sphere of radius = 1 unit, and outer
# hollow sphere with an inner radius of 2. In other words, the gap between
# them is 1 radial unit in length.
#
# The conductivity of both spheres is set very large to achieve a uniform
# temperature in each sphere. The temperature of the center node of the
# inner sphere is ramped from 100 to 200 over one time unit. The
# temperature of the outside of the outer, hollow sphere is held fixed
# at 100.
#
# A simple analytical solution is possible for the integrated heat flux
# between the inner and outer spheres:
#
# Integrated Flux = (T_left - T_right) * (gapK/(r^2*((1/r1)-(1/r2)))) * Area
#
# For gapK = 1 (default value)
#
# The area is taken as the area of the secondary (inner) surface:
#
# Area = 4 * pi * 1^2 (4*pi*r^2)
#
# The integrated heat flux across the gap at time 1 is then:
#
# 4*pi*k*delta_T/((1/r1)-(1/r2))
# 4*pi*1*100/((1/1) - (1/2)) = 2513.3 watts
#
# For comparison, see results from the integrated flux post processors.
# This simulation makes use of symmetry, so only 1/2 of the spheres is meshed
# As such, the integrated flux from the post processors is 1/2 of the total,
# or 1256.6 watts... i.e. 400*pi.
# The value coming from the post processor is slightly less than this
# but converges as mesh refinement increases.
#
# Simulating contact is challenging. Regression tests that exercise
# contact features can be difficult to solve consistently across multiple
# platforms. While designing these tests, we felt it worth while to note
# some aspects of these tests. The following applies to:
# sphere3D.i, sphere2DRZ.i, cyl2D.i, and cyl3D.i.
# 1. We decided that to perform consistently across multiple platforms we
# would use very small convergence tolerance. In this test we chose an
# nl_rel_tol of 1e-12.
# 2. Due to such a high value for thermal conductivity (used here so that the
# domains come to a uniform temperature) the integrated flux at time = 0
# was relatively large (the value coming from SideIntegralFlux =
# -_diffusion_coef[_qp]*_grad_u[_qp]*_normals[_qp] where the diffusion coefficient
# here is thermal conductivity).
# Even though _grad_u[_qp] is small, in this case the diffusion coefficient
# is large. The result is a number that isn't exactly zero and tends to
# fail exodiff. For this reason the parameter execute_on = initial should not
# be used. That parameter is left to default settings in these regression tests.
#
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
file = cyl2D.e
coord_type = RZ
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[../]
[]
[Variables]
[./temp]
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat_conduction]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1000000.0
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 1
quadrature = true
gap_geometry_type = SPHERE
sphere_origin = '0 0 0'
[../]
[]
[BCs]
[./mid]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[./Quadrature]
order = fifth
side_order = seventh
[../]
[]
[Outputs]
exodus = true
[./Console]
type = Console
[../]
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_mortar/large_gap_heat_transfer_test_cylinder.i)
rpv_core_gap_size = 0.15
core_outer_radius = 2
rpv_inner_radius = '${fparse 2 + rpv_core_gap_size}'
rpv_outer_radius = '${fparse 2.5 + rpv_core_gap_size}'
rpv_outer_htc = 10 # W/m^2/K
rpv_outer_Tinf = 300 # K
core_blocks = '1'
rpv_blocks = '3'
[Mesh]
[core_gap_rpv]
type = ConcentricCircleMeshGenerator
num_sectors = 10
radii = '${core_outer_radius} ${rpv_inner_radius} ${rpv_outer_radius}'
rings = '2 1 2'
has_outer_square = false
preserve_volumes = true
portion = full
[]
[rename_core_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = core_gap_rpv
primary_block = 1
paired_block = 2
new_boundary = 'core_outer'
[]
[rename_inner_rpv_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = rename_core_bdy
primary_block = 3
paired_block = 2
new_boundary = 'rpv_inner'
[]
[2d_mesh]
type = BlockDeletionGenerator
input = rename_inner_rpv_bdy
block = 2
[]
allow_renumbering = false
[]
[Variables]
[Tsolid]
initial_condition = 500
[]
[]
[Kernels]
[heat_source]
type = CoupledForce
variable = Tsolid
block = '${core_blocks}'
v = power_density
[]
[heat_conduction]
type = HeatConduction
variable = Tsolid
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = Tsolid
boundary = 'outer' # outer RPV
coefficient = ${rpv_outer_htc}
T_infinity = ${rpv_outer_Tinf}
[]
[]
[ThermalContact]
[RPV_gap]
type = GapHeatTransfer
gap_geometry_type = 'CYLINDER'
emissivity_primary = 0.8
emissivity_secondary = 0.8
variable = Tsolid
primary = 'core_outer'
secondary = 'rpv_inner'
gap_conductivity = 0.1
quadrature = true
cylinder_axis_point_1 = '0 0 0'
cylinder_axis_point_2 = '0 0 5'
[]
[]
[AuxVariables]
[power_density]
block = '${core_blocks}'
initial_condition = 50e3
[]
[]
[Materials]
[simple_mat]
type = HeatConductionMaterial
thermal_conductivity = 34.6 # W/m/K
[]
[]
[Postprocessors]
[Tcore_avg]
type = ElementAverageValue
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${core_blocks}'
[]
[Trpv_avg]
type = ElementAverageValue
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${rpv_blocks}'
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = '${core_blocks}'
[]
[rpv_convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = Tsolid
boundary = 'outer' # outer RVP
T_fluid = ${rpv_outer_Tinf}
htc = ${rpv_outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(rpv_convective_out - ptot) / ptot'
pp_names = 'rpv_convective_out ptot'
[]
[]
[VectorPostprocessors]
[NodalTemperature]
type = NodalValueSampler
sort_by = id
boundary = 'rpv_inner core_outer'
variable = Tsolid
[]
[]
[Executioner]
type = Steady
automatic_scaling = true
compute_scaling_once = false
petsc_options_iname = '-pc_type -pc_hypre_type -ksp_gmres_restart '
petsc_options_value = 'hypre boomeramg 100'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-10
l_max_its = 100
[Quadrature]
side_order = seventh
[]
line_search = none
[]
[Outputs]
exodus = false
csv = true
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/gap_conductivity_property.i)
[Mesh]
file = perfect.e
[]
[Variables]
[./temp]
[../]
[]
[AuxVariables]
[./gap_conductivity]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./gap_conductivity]
type = MaterialRealAux
boundary = leftright
property = gap_conductivity
variable = gap_conductivity
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 300
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
emissivity_primary = 0
emissivity_secondary = 0
variable = temp
type = GapHeatTransfer
gap_conductivity = 3.0
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Executioner]
type = Steady
solve_type = 'PJFNK'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/planar_yz.i)
# 1-D Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two element blocks in the y-z plane. Each element block
# is a square. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far bottom boundary
# is ramped from 100 to 200 over one time unit. The temperature of the far top
# boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks:
#
# Flux = (T_left - T_right) * (gapK/gap_width)
#
# The gap conductivity is specified as 1, thus
#
# gapK(Tavg) = 1.0*Tavg
#
# The heat flux across the gap at time = 1 is then:
#
# Flux = 100 * (1.0/1.0) = 100
#
# For comparison, see results from the flux post processors. These results
# are the same as for the unit 1-D gap heat transfer between two unit cubes.
[Mesh]
[file]
type = FileMeshGenerator
file = simple_2D.e
[]
[./rotate]
type = TransformGenerator
transform = ROTATE
vector_value = '0 90 90'
input = file
[../]
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./temp_far_bottom]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_top]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_rel_tol = 1e-12
l_tol = 1e-3
l_max_its = 100
dt = 1e-1
end_time = 1.0
[]
[Postprocessors]
[./temp_bottom]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_top]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_bottom]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./flux_top]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_balance/large_gap_heat_transfer_test_sphere.i)
sphere_outer_htc = 10 # W/m^2/K
sphere_outer_Tinf = 300 # K
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
[file]
type = FileMeshGenerator
file = cyl2D.e
[]
coord_type = RZ
[]
[Functions]
[temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[]
[]
[Variables]
[temp]
initial_condition = 500
[]
[]
[AuxVariables]
[gap_conductance]
order = CONSTANT
family = MONOMIAL
[]
[power_density]
block = 'fuel'
initial_condition = 50e3
[]
[]
[Kernels]
[heat_conduction]
type = HeatConduction
variable = temp
[]
[heat_source]
type = CoupledForce
variable = temp
block = 'fuel'
v = power_density
[]
[]
[AuxKernels]
[gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[]
[]
[Materials]
[heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 34.6
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0.8
emissivity_secondary = 0.8
gap_conductivity = 0.1
quadrature = true
gap_geometry_type = SPHERE
sphere_origin = '0 0 0'
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = temp
boundary = '4' # outer RPV
coefficient = ${sphere_outer_htc}
T_infinity = ${sphere_outer_Tinf}
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[Quadrature]
order = fifth
side_order = seventh
[]
[]
[Outputs]
exodus = false
csv = true
[Console]
type = Console
[]
[]
[Postprocessors]
[temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[]
[temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[]
[flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[]
[flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = 'fuel'
[]
[sphere_convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = temp
boundary = '4' # outer RVP
T_fluid = ${sphere_outer_Tinf}
htc = ${sphere_outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(sphere_convective_out - ptot) / ptot'
pp_names = 'sphere_convective_out ptot'
[]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/corner_wrap.i)
[Mesh]
file = corner_wrap.e
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
check_boundary_restricted = false
quadrature = true
[]
[]
[Variables]
[temp]
initial_condition = 100
[]
[]
[Kernels]
[heat]
type = HeatConduction
variable = temp
[]
[]
[BCs]
[temp_bot_right]
type = DirichletBC
boundary = 1
variable = temp
value = 50
[]
[temp_top_left]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[]
[]
[Materials]
[heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1.0
[]
[]
[Executioner]
type = Steady
solve_type = 'PJFNK'
line_search = 'none'
nl_rel_tol = 1e-14
l_tol = 1e-3
l_max_its = 100
# dt = 1e-1
# end_time = 1.0
[]
[Outputs]
exodus = true
[]
(modules/combined/test/tests/umat/gap_heat_transfer_umat.i)
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
temperature = temp
[]
[Mesh]
file = gap_heat_transfer_mesh.e
[]
[Functions]
[disp]
type = PiecewiseLinear
x = '0 2.0'
y = '0 1.0'
[]
[temp]
type = PiecewiseLinear
x = '0 1'
y = '273 2000'
[]
[pressure_function]
type = PiecewiseLinear
x = '0 1'
y = '0 200'
[]
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[temp]
initial_condition = 273
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 2
secondary = 3
emissivity_primary = 0
emissivity_secondary = 0
[]
[]
[Physics/SolidMechanics/QuasiStatic/All]
volumetric_locking_correction = true
strain = FINITE
generate_output = 'strain_yy stress_yy'
[]
[Kernels]
[heat]
type = HeatConduction
variable = temp
[]
[]
[BCs]
[move_right]
type = FunctionDirichletBC
boundary = '3'
variable = disp_x
function = disp
[]
[fixed_x]
type = DirichletBC
boundary = '1'
variable = disp_x
value = 0
[]
[fixed_y]
type = DirichletBC
boundary = '1 2 4'
variable = disp_y
value = 0
[]
[fixed_z]
type = DirichletBC
boundary = '1 2 3 4'
variable = disp_z
value = 0
[]
[temp_bottom]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[]
[temp_top]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[]
[Pressure]
[example]
boundary = 3
function = pressure_function
[]
[]
[]
[Materials]
# 1. Active for umat calculation
[umat]
type = AbaqusUMATStress
constant_properties = '1.0e6 0.3'
plugin = '../../../../solid_mechanics/test/plugins/elastic_temperature'
num_state_vars = 0
temperature = temp
use_one_based_indexing = true
[]
# 2. Active for reference MOOSE computations
[elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = '1 2'
base_name = 'base'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[temp_dependent_elasticity_tensor]
type = CompositeElasticityTensor
block = '1 2'
coupled_variables = temp
tensors = 'base'
weights = 'prefactor_material'
[]
[prefactor_material_block]
type = DerivativeParsedMaterial
block = '1 2'
property_name = prefactor_material
coupled_variables = temp
expression = '273/(temp)'
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1 2'
[]
[heat]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1.0
[]
[density]
type = Density
block = '1 2'
density = 1.0
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
start_time = 0.0
dt = 0.1
end_time = 2.0
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl2D.i)
#
# 2D Cylindrical Gap Heat Transfer Test.
#
# This test exercises 2D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of an inner solid cylinder of radius = 1 unit, and outer
# hollow cylinder with an inner radius of 2 in the x-y plane. In other words,
# the gap between them is 1 radial unit in length.
#
# The conductivity of both cylinders is set very large to achieve a uniform
# temperature in each cylinder. The temperature of the center node of the
# inner cylinder is ramped from 100 to 200 over one time unit. The temperature
# of the outside of the outer, hollow cylinder is held fixed at 100.
#
# A simple analytical solution is possible for the integrated heat flux
# between the inner and outer cylinders:
#
# Integrated Flux = (T_left - T_right) * (gapK/(r*ln(r2/r1))) * Area
#
# For gapK = 1 (default value)
#
# The area is taken as the area of the secondary (inner) surface:
#
# Area = 2 * pi * h * r, where h is the height of the cylinder.
#
# The integrated heat flux across the gap at time 1 is then:
#
# 2*pi*h*k*delta_T/(ln(r2/r1))
# 2*pi*1*1*100/(ln(2/1)) = 906.5 watts
#
# For comparison, see results from the integrated flux post processors.
# This simulation makes use of symmetry, so only 1/4 of the cylinders is meshed
# As such, the integrated flux from the post processors is 1/4 of the total,
# or 226.6 watts.
# The value coming from the post processor is slightly less than this
# but converges as mesh refinement increases.
# Note that the 2D and 3D results are the same.
#
# Simulating contact is challenging. Regression tests that exercise
# contact features can be difficult to solve consistently across multiple
# platforms. While designing these tests, we felt it worth while to note
# some aspects of these tests. The following applies to:
# sphere3D.i, sphere2DRZ.i, cyl2D.i, and cyl3D.i.
# 1. We decided that to perform consistently across multiple platforms we
# would use very small convergence tolerance. In this test we chose an
# nl_rel_tol of 1e-12.
# 2. Due to such a high value for thermal conductivity (used here so that the
# domains come to a uniform temperature) the integrated flux at time = 0
# was relatively large (the value coming from SideIntegralFlux =
# -_diffusion_coef[_qp]*_grad_u[_qp]*_normals[_qp] where the diffusion coefficient
# here is thermal conductivity).
# Even though _grad_u[_qp] is small, in this case the diffusion coefficient
# is large. The result is a number that isn't exactly zero and tends to
# fail exodiff. For this reason the parameter execute_on = initial should not
# be used. That parameter is left to default settings in these regression tests.
#
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
file = cyl2D.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[../]
[]
[Variables]
[./temp]
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat_conduction]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1000000.0
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 1
quadrature = true
gap_geometry_type = CYLINDER
cylinder_axis_point_1 = '0 0 0'
cylinder_axis_point_2 = '0 0 1'
[../]
[]
[BCs]
[./mid]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[./Quadrature]
order = fifth
side_order = seventh
[../]
[]
[Outputs]
exodus = true
[./Console]
type = Console
[../]
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
(modules/combined/test/tests/gap_heat_transfer_convex/gap_heat_transfer_convex.i)
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
temperature = temp
[]
[Mesh]
file = gap_heat_transfer_convex.e
[]
[Functions]
[./disp]
type = PiecewiseLinear
x = '0 2.0'
y = '0 1.0'
[../]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '200 200'
[../]
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./temp]
initial_condition = 100
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 2
secondary = 3
emissivity_primary = 0
emissivity_secondary = 0
[../]
[]
[Physics/SolidMechanics/QuasiStatic/All]
volumetric_locking_correction = true
strain = FINITE
eigenstrain_names = eigenstrain
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./move_right]
type = FunctionDirichletBC
boundary = '3'
variable = disp_x
function = disp
[../]
[./fixed_x]
type = DirichletBC
boundary = '1'
variable = disp_x
value = 0
[../]
[./fixed_y]
type = DirichletBC
boundary = '1 2 3 4'
variable = disp_y
value = 0
[../]
[./fixed_z]
type = DirichletBC
boundary = '1 2 3 4'
variable = disp_z
value = 0
[../]
[./temp_bottom]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_top]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = '1 2'
youngs_modulus = 1e6
poissons_ratio = 0.3
[../]
[./thermal_strain]
type = ComputeThermalExpansionEigenstrain
stress_free_temperature = 100
thermal_expansion_coeff = 0
eigenstrain_name = eigenstrain
[../]
[./stress]
type = ComputeFiniteStrainElasticStress
[../]
[./heat1]
type = HeatConductionMaterial
block = 1
specific_heat = 1.0
thermal_conductivity = 1.0
[../]
[./heat2]
type = HeatConductionMaterial
block = 2
specific_heat = 1.0
thermal_conductivity = 1.0
[../]
[./density]
type = Density
block = '1 2'
density = 1.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
start_time = 0.0
dt = 0.1
end_time = 2.0
[]
[Outputs]
exodus = true
[]
(modules/combined/test/tests/generalized_plane_strain_tm_contact/generalized_plane_strain_tm_contact.i)
[GlobalParams]
order = FIRST
family = LAGRANGE
displacements = 'disp_x disp_y'
scalar_out_of_plane_strain = scalar_strain_zz
temperature = temp
[]
[Mesh]
file = 2squares.e
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./temp]
[../]
[./scalar_strain_zz]
order = FIRST
family = SCALAR
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Postprocessors]
[./react_z]
type = MaterialTensorIntegral
rank_two_tensor = stress
index_i = 2
index_j = 2
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[Physics]
[./SolidMechanics]
[./GeneralizedPlaneStrain]
[./gps]
use_displaced_mesh = true
[../]
[../]
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strain_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = strain_xx
index_i = 0
index_j = 0
[../]
[./strain_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = strain_xy
index_i = 0
index_j = 1
[../]
[./strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = strain_yy
index_i = 1
index_j = 1
[../]
[./strain_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = strain_zz
index_i = 2
index_j = 2
[../]
[]
[Functions]
[./tempramp]
type = ParsedFunction
expression = 't'
[../]
[]
[BCs]
[./x]
type = DirichletBC
boundary = '4 6'
variable = disp_x
value = 0.0
[../]
[./y]
type = DirichletBC
boundary = '4 6'
variable = disp_y
value = 0.0
[../]
[./t]
type = DirichletBC
boundary = '4'
variable = temp
value = 0.0
[../]
[./tramp]
type = FunctionDirichletBC
variable = temp
boundary = '6'
function = tempramp
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
off_diag_row = 'disp_x disp_y'
off_diag_column = 'disp_y disp_x'
[../]
[]
[Contact]
[./mech]
primary = 8
secondary = 2
penalty = 1e+10
normalize_penalty = true
tangential_tolerance = .1
normal_smoothing_distance = .1
model = frictionless
formulation = kinematic
[../]
[]
[ThermalContact]
[./thermal]
type = GapHeatTransfer
primary = 8
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
variable = temp
tangential_tolerance = .1
normal_smoothing_distance = .1
gap_conductivity = 0.01
min_gap = 0.001
quadrature = true
[../]
[]
[Materials]
[./elastic_tensor]
type = ComputeIsotropicElasticityTensor
poissons_ratio = 0.3
youngs_modulus = 1e6
block = '1 2'
[../]
[./strain]
type = ComputePlaneSmallStrain
eigenstrain_names = eigenstrain
block = '1 2'
[../]
[./thermal_strain]
type = ComputeThermalExpansionEigenstrain
temperature = temp
thermal_expansion_coeff = 0.02
stress_free_temperature = 0.0
eigenstrain_name = eigenstrain
block = '1 2'
[../]
[./stress]
type = ComputeLinearElasticStress
block = '1 2'
[../]
[./heatcond]
type = HeatConductionMaterial
thermal_conductivity = 3.0
specific_heat = 300.0
block = '1 2'
[../]
[./density]
type = GenericConstantMaterial
prop_names = 'density'
prop_values = '1'
[../]
[]
[Executioner]
type = Transient
solve_type = PJFNK
line_search = none
petsc_options_iname = '-pc_type -ps_sub_type -pc_factor_mat_solver_package'
petsc_options_value = 'asm lu superlu_dist'
# controls for linear iterations
l_max_its = 100
l_tol = 1e-4
# controls for nonlinear iterations
nl_max_its = 20
nl_rel_tol = 1e-9
nl_abs_tol = 1e-10
# time control
start_time = 0.0
dt = 0.2
dtmin = 0.2
end_time = 2.0
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_mortar/gap_heat_transfer_sphere3D.i)
sphere_outer_htc = 10 # W/m^2/K
sphere_outer_Tinf = 300 # K
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
file = sphere3D.e
[]
[Functions]
[temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[]
[]
[Variables]
[temp]
initial_condition = 500
[]
[]
[AuxVariables]
[gap_conductance]
order = CONSTANT
family = MONOMIAL
[]
[power_density]
block = 'fuel'
initial_condition = 50e3
[]
[]
[Kernels]
[heat_conduction]
type = HeatConduction
variable = temp
[]
[heat_source]
type = CoupledForce
variable = temp
block = 'fuel'
v = power_density
[]
[]
[AuxKernels]
[gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[]
[]
[Materials]
[heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 34.6
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 5
gap_geometry_type = SPHERE
sphere_origin = '0 0 0'
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = temp
boundary = '4' # outer RPV
coefficient = ${sphere_outer_htc}
T_infinity = ${sphere_outer_Tinf}
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[Quadrature]
order = fifth
side_order = seventh
[]
[]
[Outputs]
exodus = true
csv = true
[Console]
type = Console
[]
[]
[Postprocessors]
[temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[]
[temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[]
[flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[]
[flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = 'fuel'
[]
[sphere_convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = temp
boundary = '4' # outer RVP
T_fluid = ${sphere_outer_Tinf}
htc = ${sphere_outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(sphere_convective_out - ptot) / ptot'
pp_names = 'sphere_convective_out ptot'
[]
[]
[VectorPostprocessors]
[NodalTemperature]
type = NodalValueSampler
sort_by = id
boundary = '2 3'
variable = temp
[]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_mortar/bc_gap_heat_transfer_displaced_conduction.i)
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
[file]
type = FileMeshGenerator
file = 2blk-gap.e
[]
allow_renumbering = false
[]
[Problem]
kernel_coverage_check = false
material_coverage_check = false
[]
[Variables]
[temp]
order = FIRST
family = LAGRANGE
block = '1 2'
[]
[disp_x]
order = FIRST
family = LAGRANGE
block = '1 2'
[]
[disp_y]
order = FIRST
family = LAGRANGE
block = '1 2'
[]
[]
[Materials]
[left]
type = ADHeatConductionMaterial
block = 1
thermal_conductivity = 0.01
specific_heat = 1
[]
[right]
type = ADHeatConductionMaterial
block = 2
thermal_conductivity = 0.005
specific_heat = 1
[]
[]
[Kernels]
[hc_displaced_block]
type = ADHeatConduction
variable = temp
use_displaced_mesh = true
block = '1'
[]
[hc_undisplaced_block]
type = ADHeatConduction
variable = temp
use_displaced_mesh = false
block = '2'
[]
[disp_x]
type = Diffusion
variable = disp_x
block = '1 2'
[]
[disp_y]
type = Diffusion
variable = disp_y
block = '1 2'
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 100
secondary = 101
emissivity_primary = 0.0
emissivity_secondary = 0.0
gap_conductivity = 100.0
quadrature = true
[]
[]
[BCs]
[left]
type = DirichletBC
variable = temp
boundary = 'left'
value = 100
[]
[right]
type = DirichletBC
variable = temp
boundary = 'right'
value = 0
[]
[left_disp_x]
type = DirichletBC
preset = false
variable = disp_x
boundary = 'left'
value = .1
[]
[right_disp_x]
type = DirichletBC
preset = false
variable = disp_x
boundary = 'right'
value = 0
[]
[bottom_disp_y]
type = DirichletBC
preset = false
variable = disp_y
boundary = 'bottom'
value = 0
[]
[]
[Preconditioning]
[fmp]
type = SMP
full = true
solve_type = 'NEWTON'
[]
[]
[Executioner]
type = Steady
nl_rel_tol = 1e-11
nl_abs_tol = 1.0e-10
[]
[VectorPostprocessors]
[NodalTemperature]
type = NodalValueSampler
sort_by = id
boundary = '100 101'
variable = 'temp'
[]
[]
[Outputs]
exodus = false
csv = true
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfectQ8.i)
[GlobalParams]
order = SECOND
[]
[Mesh]
file = perfectQ8.e
[]
[Variables]
[./temp]
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 300
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
emissivity_primary = 0
emissivity_secondary = 0
variable = temp
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Executioner]
type = Steady
solve_type = 'PJFNK'
[./Quadrature]
order = THIRD
[../]
[]
[Outputs]
exodus = true
[]
(modules/combined/test/tests/break_mesh_interface_contact/break_mesh_interface_contact.i)
[GlobalParams]
order = FIRST
family = LAGRANGE
displacements = 'disp_x disp_y'
volumetric_locking_correction = true
[]
[Mesh]
[gen]
type = GeneratedMeshGenerator
nx = 5
ny = 5
dim = 2
[]
[block1]
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '0 0 0'
top_right = '0.5 1 0'
input = gen
[]
[block2]
type = SubdomainBoundingBoxGenerator
block_id = 2
bottom_left = '0.5 0 0'
top_right = '1 1 0'
input = block1
[]
[breakmesh]
input = block2
type = BreakMeshByBlockGenerator
block_pairs = '1 2'
split_interface = true
add_interface_on_two_sides = true
[]
[]
[Variables]
[temperature]
[]
[disp_x]
[]
[disp_y]
[]
[]
[Kernels]
[thermal_cond]
type = HeatConduction
variable = temperature
[]
[]
[Physics/SolidMechanics/QuasiStatic]
generate_output = 'stress_xx stress_yy strain_xx strain_yy'
add_variables = true
strain = FINITE
incremental = true
[block1]
block = 1
[]
[block2]
block = 2
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temperature
primary = Block1_Block2
secondary = Block2_Block1
emissivity_primary = 0
emissivity_secondary = 0
quadrature = true
gap_conductivity = 1
[]
[]
[Contact]
[mechanical]
primary = Block1_Block2
secondary = Block2_Block1
penalty = 1000
model = coulomb
friction_coefficient = 0.5
formulation = tangential_penalty
tangential_tolerance = 0.1
[]
[]
[BCs]
[left_temp]
type = DirichletBC
value = 100
variable = temperature
boundary = left
[]
[right_temp]
type = DirichletBC
value = 0
variable = temperature
boundary = right
[]
[left_disp_x]
type = FunctionDirichletBC
variable = disp_x
boundary = left
function = 0
[]
[left_disp_y]
type = DirichletBC
variable = disp_y
boundary = left
value = 0.0
[]
[right_disp_x]
type = FunctionDirichletBC
variable = disp_x
boundary = right
function = '-t'
[]
[right_disp_y]
type = FunctionDirichletBC
variable = disp_y
boundary = right
function = '0'
[]
[]
[Materials]
[thermal_cond]
type = GenericConstantMaterial
prop_names = 'thermal_conductivity'
prop_values = 1
[]
[elasticity_tensor]
type = ComputeIsotropicElasticityTensor
poissons_ratio = 0.3
youngs_modulus = 100
[]
[stress]
type = ComputeFiniteStrainElasticStress
[]
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Dampers]
[contact_slip]
type = ContactSlipDamper
secondary = Block1_Block2
primary = Block2_Block1
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type'
petsc_options_value = 'lu mumps'
line_search = none
nl_rel_tol = 1e-9
nl_abs_tol = 1e-9
l_tol = 1e-4
l_max_its = 50
nl_max_its = 20
start_time = 0.0
num_steps = 2
dtmin = 1e-8
dt = 1e-2
automatic_scaling = true
[]
[Outputs]
print_linear_residuals = false
time_step_interval = 1
csv = false
perf_graph = false
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl2D_yz.i)
#
# 2D Cylindrical Gap Heat Transfer Test.
#
# This test exercises 2D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of an inner solid cylinder of radius = 1 unit, and outer
# hollow cylinder with an inner radius of 2 in the y-z plane. In other words,
# the gap between them is 1 radial unit in length.
#
# The calculated results are the same as for the cyl2D.i case in the x-y plane.
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
[file]
type = FileMeshGenerator
file = cyl2D.e
[]
[./rotate]
type = TransformGenerator
transform = ROTATE
vector_value = '0 90 90'
input = file
[../]
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[../]
[]
[Variables]
[./temp]
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat_conduction]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1000000.0
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 1
quadrature = true
gap_geometry_type = CYLINDER
cylinder_axis_point_1 = '0 0 0'
cylinder_axis_point_2 = '1 0 0'
[../]
[]
[BCs]
[./mid]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[./Quadrature]
order = fifth
side_order = seventh
[../]
[]
[Outputs]
exodus = true
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_it_plot_test.i)
#
# 1-D Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two element blocks containing one element each. Each
# element is a unit cube. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far left boundary
# is ramped from 100 to 200 over one time unit, and then held fixed for an additional
# time unit. The temperature of the far right boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks:
#
# Flux = (T_left - T_right) * (gapK/gap_width)
#
# The gap conductivity is specified as 1, thus
#
# gapK(Tavg) = 1.0*Tavg
#
#
# The heat flux across the gap at time = 2 is then:
#
# Flux(2) = 100 * (1.0/1.0) = 100
#
# For comparison, see results from the flux post processors
#
[Mesh]
file = gap_heat_transfer_htonly_test.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./temp_far_left]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_abs_tol = 1e-5
nl_rel_tol = 1e-12
l_tol = 1e-10
l_max_its = 100
start_time = 0.0
dt = 1e-1
end_time = 2.0
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
[Outputs]
file_base = out_it_plot
[./exodus]
type = Exodus
execute_on = 'initial timestep_end nonlinear'
nonlinear_residual_dt_divisor = 100
[../]
[]
(modules/heat_transfer/test/tests/heat_conduction/3d_quadrature_gap_heat_transfer/moving.i)
[Mesh]
file = nonmatching.e
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[temp]
[]
[]
[AuxVariables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[]
[Functions]
[disp_y]
type = ParsedFunction
expression = 0.1*t
[]
[left_temp]
type = ParsedFunction
expression = 1000+t
[]
[]
[Kernels]
[hc]
type = HeatConduction
variable = temp
[]
[]
[AuxKernels]
[disp_y]
type = FunctionAux
variable = disp_y
function = disp_y
block = left
execute_on = 'INITIAL TIMESTEP_BEGIN'
[]
[]
[BCs]
[left]
type = FunctionDirichletBC
variable = temp
boundary = leftleft
function = left_temp
[]
[right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[]
[]
[ThermalContact]
[left_to_right]
type = GapHeatTransfer
variable = temp
primary = rightleft
secondary = leftright
emissivity_primary = 0
emissivity_secondary = 0
quadrature = true
[]
[]
[Materials]
[hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
use_displaced_mesh = true
[]
[]
[Postprocessors]
[left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = leftright
diffusivity = thermal_conductivity
[]
[right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = rightleft
diffusivity = thermal_conductivity
[]
[]
[Executioner]
type = Transient
num_steps = 9
dt = 1
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfectQ9.i)
[GlobalParams]
order = SECOND
[]
[Mesh]
file = perfectQ9.e
[]
[Variables]
[./temp]
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 300
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
emissivity_primary = 0
emissivity_secondary = 0
variable = temp
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Executioner]
type = Steady
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
[./Quadrature]
order = THIRD
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/recover/ad_recover.i)
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
file = recover_in.e
coord_type = RZ
[]
[Variables]
[./temp]
initial_condition = 580.0
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = ADHeatConduction
variable = temp
[../]
[./heat_source]
type = ADMatHeatSource
material_property = volumetric_heat
variable = temp
scalar = 1e3
block = pellet_type_1
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 5
secondary = 10
emissivity_primary = 0
emissivity_secondary = 0
quadrature = true
[../]
[]
[BCs]
[./outside]
type = DirichletBC
value = 580
boundary = '1 2 3'
variable = temp
[../]
[./edge]
type = DirichletBC
value = 700
boundary = 10
variable = temp
[../]
[]
[Materials]
[./volumetric_heat]
type = ADGenericFunctionMaterial
prop_names = 'volumetric_heat'
prop_values = 't'
[../]
[./thermal_3]
type = ADHeatConductionMaterial
block = 3
thermal_conductivity = 5
specific_heat = 12
[../]
[./thermal_1]
type = ADHeatConductionMaterial
block = 1
thermal_conductivity = 16.0
specific_heat = 330.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = ' lu superlu_dist'
nl_rel_tol = 1e-9
nl_abs_tol = 1e-11
start_time = -200
n_startup_steps = 1
end_time = 1.02e5
num_steps = 10
dtmax = 2e6
dtmin = 1
[./TimeStepper]
type = IterationAdaptiveDT
dt = 2.0e2
optimal_iterations = 15
iteration_window = 2
[../]
[./Quadrature]
order = FIFTH
side_order = SEVENTH
[../]
[]
[Postprocessors]
[./ave_temp_interior]
type = SideAverageValue
boundary = 9
variable = temp
execute_on = 'initial linear'
[../]
[./avg_clad_temp]
type = SideAverageValue
boundary = 7
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_from_clad]
type = ADSideDiffusiveFluxIntegral
variable = temp
boundary = 5
diffusivity = thermal_conductivity
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl3D.i)
#
# 3D Cylindrical Gap Heat Transfer Test.
#
# This test exercises 3D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of an inner solid cylinder of radius = 1 unit, and outer
# hollow cylinder with an inner radius of 2. In other words, the gap between
# them is 1 radial unit in length.
#
# The conductivity of both cylinders is set very large to achieve a uniform
# temperature in each cylinder. The temperature of the center node of the
# inner cylinder is ramped from 100 to 200 over one time unit. The temperature
# of the outside of the outer, hollow cylinder is held fixed at 100.
#
# A simple analytical solution is possible for the integrated heat flux
# between the inner and outer cylinders:
#
# Integrated Flux = (T_left - T_right) * (gapK/(r*ln(r2/r1))) * Area
#
# For gapK = 1 (default value)
#
# The area is taken as the area of the secondary (inner) surface:
#
# Area = 2 * pi * h * r, where h is the height of the cylinder.
#
# The integrated heat flux across the gap at time 1 is then:
#
# 2*pi*h*k*delta_T/(ln(r2/r1))
# 2*pi*1*1*100/(ln(2/1)) = 906.5 watts
#
# For comparison, see results from the integrated flux post processors.
# This simulation makes use of symmetry, so only 1/4 of the cylinders is meshed
# As such, the integrated flux from the post processors is 1/4 of the total,
# or 226.6 watts.
# The value coming from the post processor is slightly less than this
# but converges as mesh refinement increases.
#
# Simulating contact is challenging. Regression tests that exercise
# contact features can be difficult to solve consistently across multiple
# platforms. While designing these tests, we felt it worth while to note
# some aspects of these tests. The following applies to:
# sphere3D.i, sphere2DRZ.i, cyl2D.i, and cyl3D.i.
# 1. We decided that to perform consistently across multiple platforms we
# would use very small convergence tolerance. In this test we chose an
# nl_rel_tol of 1e-12.
# 2. Due to such a high value for thermal conductivity (used here so that the
# domains come to a uniform temperature) the integrated flux at time = 0
# was relatively large (the value coming from SideIntegralFlux =
# -_diffusion_coef[_qp]*_grad_u[_qp]*_normals[_qp] where the diffusion coefficient
# here is thermal conductivity).
# Even though _grad_u[_qp] is small, in this case the diffusion coefficient
# is large. The result is a number that isn't exactly zero and tends to
# fail exodiff. For this reason the parameter execute_on = initial should not
# be used. That parameter is left to default settings in these regression tests.
#
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
file = cyl3D.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[../]
[]
[Variables]
[./temp]
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat_conduction]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1000000.0
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 1
quadrature = true
gap_geometry_type = CYLINDER
cylinder_axis_point_1 = '0 0 0'
cylinder_axis_point_2 = '0 1 0'
[../]
[]
[BCs]
[./mid]
type = FunctionDirichletBC
boundary = 5
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[./Quadrature]
order = fifth
side_order = seventh
[../]
[]
[Outputs]
exodus = true
[./Console]
type = Console
[../]
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/planar_xy.i)
# 1-D Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two element blocks in the x-y plane. Each element block
# is a square. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far bottom boundary
# is ramped from 100 to 200 over one time unit. The temperature of the far top
# boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks:
#
# Flux = (T_left - T_right) * (gapK/gap_width)
#
# The gap conductivity is specified as 1, thus
#
# gapK(Tavg) = 1.0*Tavg
#
# The heat flux across the gap at time = 1 is then:
#
# Flux = 100 * (1.0/1.0) = 100
#
# For comparison, see results from the flux post processors. These results
# are the same as for the unit 1-D gap heat transfer between two unit cubes.
[Mesh]
file = simple_2D.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./temp_far_bottom]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_top]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_rel_tol = 1e-14
l_tol = 1e-3
l_max_its = 100
dt = 1e-1
end_time = 1.0
[]
[Postprocessors]
[./temp_bottom]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_top]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_bottom]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./flux_top]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_radiation/sphere.i)
#
# This problem is one of radiation boundary conditions between two
# spherical surfaces.
#
# S(T1^4 - T2^4) R1^2
# flux1 = - ---------------- and flux2 = -flux1 * ----
# 1 1 - e2 R1^2 R2^2
# -- + ------ * ----
# e1 e2 R2^2
#
# where S is the Stefan Boltzmann constant 5.67e-8 W/m^2/K^4
# T1 is the temperature on the left surface 278 K
# T2 is the temperature on the right surface 333 K
# e1 is the emissivity for the left surface 0.8
# e2 is the emissivity for the left surface 0.9
# R1 is the radius of the inner surface 0.1 m
# R2 is the radius of the outer surface 0.11 m
#
# Flux1:
# Exact Code
# ------------- -------------
# -267.21 W/m^2 -267.02 W/m^2
#
# Flux2:
# Exact Code
# ------------- -------------
# 220.83 W/m^2 220.70 W/m^2
#
thick = 0.01
R1 = 0.1
R2 = 0.11
[GlobalParams]
order = second
family = lagrange
[]
[Mesh]
coord_type = RSPHERICAL
[mesh1]
type = GeneratedMeshGenerator
dim = 1
elem_type = edge3
nx = 4
xmin = '${fparse R1 - thick}'
xmax = '${R1}'
boundary_name_prefix = left
[]
[mesh2]
type = GeneratedMeshGenerator
dim = 1
elem_type = edge3
nx = 4
ny = 1
xmin = '${R2}'
xmax = '${fparse R2 + thick}'
boundary_id_offset = 4
boundary_name_prefix = right
[]
[final]
type = CombinerGenerator
inputs = 'mesh1 mesh2'
[]
[]
[Variables]
[temperature]
[]
[]
[Kernels]
[heat_conduction]
type = HeatConduction
variable = temperature
[]
[]
[BCs]
[left]
type = DirichletBC
variable = temperature
boundary = left_left
value = 278
[]
[right]
type = DirichletBC
variable = temperature
boundary = right_right
value = 333
[]
[]
[Materials]
[heat]
type = HeatConductionMaterial
thermal_conductivity = 200 # W/m/K
specific_heat = 4.2e5
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temperature
primary = left_right
secondary = right_left
emissivity_primary = 0.8
emissivity_secondary = 0.9
quadrature = true
gap_conductivity = 1e-40 # requires a positive value
gap_geometry_type = sphere
[]
[]
[Functions]
[analytic_flux_1]
type = ParsedFunction
symbol_names = 'S T1 T2 e1 e2 R1 R2'
symbol_values = '5.67e-8 278 333 0.8 0.9 ${R1} ${R2}'
expression = 'T14 := T1*T1*T1*T1;
T24 := T2*T2*T2*T2;
S*(T14-T24)/(1/e1+(1-e2)/e2*R1*R1/R2/R2)'
[]
[analytic_flux_2]
type = ParsedFunction
symbol_names = 'S T1 T2 e1 e2 R1 R2'
symbol_values = '5.67e-8 278 333 0.8 0.9 ${R1} ${R2}'
expression = 'T14 := T1*T1*T1*T1;
T24 := T2*T2*T2*T2;
-S*(T14-T24)/(1/e1+(1-e2)/e2*R1*R1/R2/R2)*R1*R1/R2/R2'
[]
[]
[Postprocessors]
[code_flux_1]
type = SideDiffusiveFluxAverage
variable = temperature
boundary = left_right
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[]
[analytic_flux_1]
type = FunctionValuePostprocessor
function = analytic_flux_1
execute_on = 'initial timestep_end'
[]
[error_1]
type = ParsedPostprocessor
pp_names = 'code_flux_1 analytic_flux_1'
expression = '(analytic_flux_1 - code_flux_1)/analytic_flux_1*100'
execute_on = 'initial timestep_end'
[]
[code_flux_2]
type = SideDiffusiveFluxAverage
variable = temperature
boundary = right_left
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[]
[analytic_flux_2]
type = FunctionValuePostprocessor
function = analytic_flux_2
execute_on = 'initial timestep_end'
[]
[error_2]
type = ParsedPostprocessor
pp_names = 'code_flux_2 analytic_flux_2'
expression = '(analytic_flux_2 - code_flux_2)/analytic_flux_2*100'
execute_on = 'initial timestep_end'
[]
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = newton
num_steps = 1
dt = 1
end_time = 1
nl_abs_tol = 1e-12
nl_rel_tol = 1e-10
[]
[Outputs]
csv = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_mortar/large_gap_heat_transfer_test_sphere.i)
sphere_outer_htc = 10 # W/m^2/K
sphere_outer_Tinf = 300 # K
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
[file]
type = FileMeshGenerator
file = cyl2D.e
[]
allow_renumbering = false
coord_type = RZ
[]
[Functions]
[temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[]
[]
[Variables]
[temp]
initial_condition = 500
[]
[]
[AuxVariables]
[gap_conductance]
order = CONSTANT
family = MONOMIAL
[]
[power_density]
block = 'fuel'
initial_condition = 50e3
[]
[]
[Kernels]
[heat_conduction]
type = HeatConduction
variable = temp
[]
[heat_source]
type = CoupledForce
variable = temp
block = 'fuel'
v = power_density
[]
[]
[AuxKernels]
[gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[]
[]
[Materials]
[heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 34.6
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0.0
emissivity_secondary = 0.0
gap_conductivity = 5
# quadrature = true
gap_geometry_type = SPHERE
sphere_origin = '0 0 0'
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = temp
boundary = '4' # outer RPV
coefficient = ${sphere_outer_htc}
T_infinity = ${sphere_outer_Tinf}
[]
[]
[VectorPostprocessors]
[NodalTemperature]
type = NodalValueSampler
sort_by = id
boundary = '2 3'
variable = temp
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[Quadrature]
order = fifth
side_order = seventh
[]
[]
[Outputs]
exodus = true
csv = true
[Console]
type = Console
[]
[]
[Postprocessors]
[temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[]
[temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[]
[flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[]
[flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = 'fuel'
[]
[sphere_convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = temp
boundary = '4' # outer RVP
T_fluid = ${sphere_outer_Tinf}
htc = ${sphere_outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(sphere_convective_out - ptot) / ptot'
pp_names = 'sphere_convective_out ptot'
[]
[]
(modules/heat_transfer/test/tests/meshed_gap_thermal_contact/meshed_gap_thermal_contact_constant_conductance.i)
[Mesh]
[fmesh]
type = FileMeshGenerator
file = meshed_gap.e
[]
[block0]
type = SubdomainBoundingBoxGenerator
input = fmesh
bottom_left = '.5 -.5 0'
top_right = '.7 .5 0'
block_id = 4
[]
[]
[Variables]
[./temp]
block = '1 3'
initial_condition = 1.0
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
block = '1 3'
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = 1
value = 1
[../]
[./right]
type = DirichletBC
variable = temp
boundary = 4
value = 2
[../]
[]
[ThermalContact]
[./gap_conductance]
type = GapHeatTransfer
variable = temp
primary = 2
secondary = 3
emissivity_primary = 0
emissivity_secondary = 0
gap_conductance = 2.5
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = '1 3'
temp = temp
thermal_conductivity = 1
[../]
[]
[Problem]
type = FEProblem
kernel_coverage_check = false
material_coverage_check = false
[]
[Executioner]
type = Steady
solve_type = PJFNK
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
[./out]
type = Exodus
[../]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_radiation/gap_heat_transfer_radiation_test.i)
#
# 1-D Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a helium-filled gap including radiation.
#
# The mesh consists of two element blocks containing one element each. Each
# element is a unit cube. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far left boundary
# is ramped from 100 to 200 over one time unit, and then held fixed for an additional
# time unit. The temperature of the far right boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks:
#
# Flux = (T_left - T_right) * h_gap
#
# where h_gap = h_gas + h_cont + h_rad
#
# By setting the contact pressure, roughnesses, and jump distances to zero, the gap
# conductance simplifies to:
#
# h_gap = gapK/d_gap + sigma*Fe*(T_left^2 + T_right^2)*(T_left + T_right)
#
# where Fe = 1/(1/eps_left + 1/eps_right - 1)
# eps = emissivity
#
# For pure helium, BISON computes the gas conductivity as:
#
# gapK(Tavg) = 2.639e-3*Tavg^0.7085
#
# For the test, the final (t=2) average gas temperature is (200 +100)/2 = 150,
# giving gapK(150) = 0.09187557
#
# Assuming ems_left = ems_right = 0.5, Fe = 1/3
#
# The heat flux across the gap at that time is then:
#
# Flux(2) = 100 * ((0.09187557/1.0) + (5.669e-8/3)*(200^2 + 100^2)*(200 + 100))
# = 37.532557
#
# The flux post processors give 37.53255
#
[Mesh]
file = gap_heat_transfer_radiation_test.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '200 200'
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./temp_far_left]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[ThermalContact]
[./gap]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
gap_conductivity = 0.09187557
emissivity_primary = 0.5
emissivity_secondary = 0.5
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 10000000.0
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_abs_tol = 1e-6
nl_rel_tol = 1e-10
l_tol = 1e-3
l_max_its = 100
start_time = 0.0
dt = 1
end_time = 1.0
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/cyl2D_xz.i)
#
# 2D Cylindrical Gap Heat Transfer Test.
#
# This test exercises 2D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of an inner solid cylinder of radius = 1 unit, and outer
# hollow cylinder with an inner radius of 2 in the x-z plane. In other words,
# the gap between them is 1 radial unit in length.
#
# The calculated results are the same as for the cyl2D.i case in the x-y plane.
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
[file]
type = FileMeshGenerator
file = cyl2D.e
[]
[./rotate]
type = TransformGenerator
transform = ROTATE
vector_value = '0 90 0'
input = file
[../]
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[../]
[]
[Variables]
[./temp]
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat_conduction]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1000000.0
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 1
quadrature = true
gap_geometry_type = CYLINDER
cylinder_axis_point_1 = '0 0 0'
cylinder_axis_point_2 = '0 1 0'
[../]
[]
[BCs]
[./mid]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[./Quadrature]
order = fifth
side_order = seventh
[../]
[]
[Outputs]
exodus = true
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfect_split.i)
[Mesh]
[fmg]
type = FileMeshGenerator
file = 'perfect.cpa.gz'
[]
parallel_type = distributed
[]
[Variables]
[temp]
[]
[]
[Kernels]
[hc]
type = HeatConduction
variable = temp
[]
[]
[BCs]
[left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 300
[]
[right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[]
[]
[ThermalContact]
[left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
emissivity_primary = 0
emissivity_secondary = 0
variable = temp
type = GapHeatTransfer
[]
[]
[Materials]
[hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[]
[]
[Executioner]
type = Steady
solve_type = 'PJFNK'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/sphere3D.i)
#
# 3D Spherical Gap Heat Transfer Test.
#
# This test exercises 3D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of an inner solid sphere of radius = 1 unit, and outer
# hollow sphere with an inner radius of 2. In other words, the gap between
# them is 1 radial unit in length.
#
# The conductivity of both spheres is set very large to achieve a uniform
# temperature in each sphere. The temperature of the center node of the
# inner sphere is ramped from 100 to 200 over one time unit. The
# temperature of the outside of the outer, hollow sphere is held fixed
# at 100.
#
# A simple analytical solution is possible for the integrated heat flux
# between the inner and outer spheres:
#
# Integrated Flux = (T_left - T_right) * (gapK/(r^2*((1/r1)-(1/r2)))) * Area
#
# For gapK = 1 (default value)
#
# The area is taken as the area of the secondary (inner) surface:
#
# Area = 4 * pi * 1^2 (4*pi*r^2)
#
# The integrated heat flux across the gap at time 1 is then:
#
# 4*pi*k*delta_T/((1/r1)-(1/r2))
# 4*pi*1*100/((1/1) - (1/2)) = 2513.3 watts
#
# For comparison, see results from the integrated flux post processors.
# This simulation makes use of symmetry, so only 1/8 of the spheres is meshed
# As such, the integrated flux from the post processors is 1/8 of the total,
# or 314.159 watts... i.e. 100*pi.
# The value coming from the post processor is slightly less than this
# but converges as mesh refinement increases.
#
# Simulating contact is challenging. Regression tests that exercise
# contact features can be difficult to solve consistently across multiple
# platforms. While designing these tests, we felt it worth while to note
# some aspects of these tests. The following applies to:
# sphere3D.i, sphere2DRZ.i, cyl2D.i, and cyl3D.i.
# 1. We decided that to perform consistently across multiple platforms we
# would use very small convergence tolerance. In this test we chose an
# nl_rel_tol of 1e-12.
# 2. Due to such a high value for thermal conductivity (used here so that the
# domains come to a uniform temperature) the integrated flux at time = 0
# was relatively large (the value coming from SideIntegralFlux =
# -_diffusion_coef[_qp]*_grad_u[_qp]*_normals[_qp] where the diffusion coefficient
# here is thermal conductivity).
# Even though _grad_u[_qp] is small, in this case the diffusion coefficient
# is large. The result is a number that isn't exactly zero and tends to
# fail exodiff. For this reason the parameter execute_on = initial should not
# be used. That parameter is left to default settings in these regression tests.
#
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
file = sphere3D.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[../]
[]
[Variables]
[./temp]
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat_conduction]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 1
quadrature = true
gap_geometry_type = SPHERE
sphere_origin = '0 0 0'
[../]
[]
[BCs]
[./mid]
type = FunctionDirichletBC
boundary = 5
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-7
[./Quadrature]
order = fifth
side_order = seventh
[../]
[]
[Outputs]
exodus = true
[./Console]
type = Console
[../]
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
(modules/combined/test/tests/gap_heat_transfer_jac/two_blocks.i)
# This problem consists of two beams with different prescribed temperatures on
# the top of the top beam and the bottom of the bottom beam. The top beam is
# fixed against vertical displacement on the top surface, and the bottom beam
# bends downward due to thermal expansion.
# This is a test of the effectiveness of the Jacobian terms coupling temperature
# and displacement for thermal contact. The Jacobian is not exactly correct,
# but is close enough that this challenging problem converges in a small number
# of nonlinear iterations using NEWTON.
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
[./msh]
type = FileMeshGenerator
file = two_blocks.e
[]
[]
[Variables]
[./temp]
[../]
[]
[Kernels]
[./heat]
type = ADHeatConduction
variable = temp
[../]
[]
[Physics/SolidMechanics/QuasiStatic]
[./all]
strain = FINITE
add_variables = true
eigenstrain_names = thermal_expansion
generate_output = 'stress_xx stress_yy stress_zz stress_yz stress_xz stress_xy'
use_automatic_differentiation = true
[../]
[]
[Contact]
[./mechanical]
primary = 4
secondary = 5
formulation = kinematic
tangential_tolerance = 1e-1
penalty = 1e10
[../]
[]
[ThermalContact]
[./thermal]
type = GapHeatTransfer
variable = temp
primary = 4
secondary = 5
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 1e4
quadrature = true
[../]
[]
[BCs]
[./left_x]
type = DirichletBC
variable = disp_x
boundary = 1
value = 0.0
[../]
[./left_y]
type = DirichletBC
variable = disp_y
boundary = 1
value = 0.0
[../]
[./top_y]
type = DirichletBC
variable = disp_y
boundary = 7
value = 0
[../]
[./top_temp]
type = DirichletBC
variable = temp
boundary = 7
value = 1000.0
[../]
[./bot_temp]
type = DirichletBC
variable = temp
boundary = 6
value = 500.0
[../]
[]
[Materials]
[./density]
type = Density
density = 100
[../]
[./temp]
type = ADHeatConductionMaterial
thermal_conductivity = 1e5
specific_heat = 620.0
[../]
[./Elasticity_tensor]
type = ADComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0.3 0.5e8'
[../]
[./thermal_eigenstrain]
type = ADComputeThermalExpansionEigenstrain
thermal_expansion_coeff = 1e-5
stress_free_temperature = 500
temperature = temp
eigenstrain_name = thermal_expansion
[../]
[./stress]
type = ADComputeFiniteStrainElasticStress
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[../]
[]
[Outputs]
exodus = true
[]
[Executioner]
automatic_scaling = true
type = Transient
petsc_options_iname = '-pc_type'
petsc_options_value = 'lu'
solve_type = NEWTON
nl_max_its = 15
l_tol = 1e-10
l_max_its = 50
start_time = 0.0
dt = 0.2
dtmin = 0.2
num_steps = 1
line_search = none
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_rz_test.i)
#
# 2-D RZ Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two element blocks containing one element each. Each
# element is a unit cube. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far left boundary
# is ramped from 100 to 200 over one time unit, and then held fixed for an additional
# time unit. The temperature of the far right boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks, or cylinders in the case of RZ.:
#
# Flux = (T_left - T_right) * (gapK/(r*ln(r2/r1)))
#
# For gapK = 1 (default value)
#
# The integrated heat flux across the gap at time 2 is then:
#
# 2*pi*h*k*delta_T/(ln(r2/r1))
# 2*pi*1*1*100/(ln(2/1)) = 906.5 watts
#
# For comparison, see results from the flux post processors.
#
# As a second test, use the rectilinear (parallel plate) form of the gap heat transfer.
#
# Flux = (T_left - T_right) * (gapK/gapL)
#
# For gapK = 1 (default value)
#
# The integrated heat flux across the gap at time 2 is then:
#
# 2*pi*h*k*delta_T/(1)
# 2*pi*1*1*100/(1) = 628.3 watts
#
# For comparison, see results from the flux post processors.
#
[Mesh]
active = 'file'
[file]
type = FileMeshGenerator
file = gap_heat_transfer_htonly_rz_test.e
[]
[rotate]
type = TransformGenerator
transform = ROTATE
vector_value = '90 0 0'
input = file
[]
rz_coord_axis = Y # this is modified through CLI args to test Z-R as opposed to R-Z
coord_type = RZ
[]
[Functions]
[./ramp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
[../]
[./thermal_contact2]
type = GapHeatTransfer
variable = temp2
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_geometry_type = PLATE
appended_property_name = 2
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[./temp2]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[./gap_cond2]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./heat2]
type = HeatConduction
variable = temp2
[../]
[]
[BCs]
[./temp_far_left]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = ramp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[./temp_far_left2]
type = FunctionDirichletBC
boundary = 1
variable = temp2
function = ramp
[../]
[./temp_far_right2]
type = DirichletBC
boundary = 4
variable = temp2
value = 100
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 2
[../]
[./conductance2]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond2
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1e6
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
# petsc_options = '-snes_mf_operator -ksp_monitor -snes_ksp_ew'
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
# petsc_options_iname = '-snes_type -snes_ls -snes_linesearch_type -ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
# petsc_options_value = 'ls basic basic 201 hypre boomeramg 4'
# petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
# petsc_options_value = '201 hypre boomeramg 4'
nl_abs_tol = 1e-3
nl_rel_tol = 1e-8
l_tol = 1e-6
l_max_its = 100
start_time = 0.0
dt = 1e-1
dtmin = 1e-1
end_time = 2.0
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[./temp_left2]
type = SideAverageValue
boundary = 2
variable = temp2
execute_on = 'initial timestep_end'
[../]
[./temp_right2]
type = SideAverageValue
boundary = 3
variable = temp2
execute_on = 'initial timestep_end'
[../]
[./flux_left2]
type = SideDiffusiveFluxIntegral
variable = temp2
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right2]
type = SideDiffusiveFluxIntegral
variable = temp2
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_balance/large_gap_heat_transfer_test_cylinder.i)
rpv_core_gap_size = 0.15
core_outer_radius = 2
rpv_inner_radius = ${fparse 2 + rpv_core_gap_size}
rpv_outer_radius = ${fparse 2.5 + rpv_core_gap_size}
rpv_outer_htc = 10 # W/m^2/K
rpv_outer_Tinf = 300 # K
core_blocks = '1'
rpv_blocks = '3'
[Mesh]
[core_gap_rpv]
type = ConcentricCircleMeshGenerator
num_sectors = 10
radii = '${core_outer_radius} ${rpv_inner_radius} ${rpv_outer_radius}'
rings = '2 1 2'
has_outer_square = false
preserve_volumes = true
portion = full
[]
[rename_core_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = core_gap_rpv
primary_block = 1
paired_block = 2
new_boundary = 'core_outer'
[]
[rename_inner_rpv_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = rename_core_bdy
primary_block = 3
paired_block = 2
new_boundary = 'rpv_inner'
[]
[2d_mesh]
type = BlockDeletionGenerator
input = rename_inner_rpv_bdy
block = 2
[]
[]
[Variables]
[Tsolid]
initial_condition = 500
[]
[]
[Kernels]
[heat_source]
type = CoupledForce
variable = Tsolid
block = '${core_blocks}'
v = power_density
[]
[heat_conduction]
type = HeatConduction
variable = Tsolid
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = Tsolid
boundary = 'outer' # outer RPV
coefficient = ${rpv_outer_htc}
T_infinity = ${rpv_outer_Tinf}
[]
[]
[ThermalContact]
[RPV_gap]
type = GapHeatTransfer
gap_geometry_type = 'CYLINDER'
emissivity_primary = 0.8
emissivity_secondary = 0.8
variable = Tsolid
primary = 'core_outer'
secondary = 'rpv_inner'
gap_conductivity = 0.1
quadrature = true
cylinder_axis_point_1 = '0 0 0'
cylinder_axis_point_2 = '0 0 5'
[]
[]
[AuxVariables]
[power_density]
block = '${core_blocks}'
initial_condition = 50e3
[]
[]
[Materials]
[simple_mat]
type = HeatConductionMaterial
thermal_conductivity = 34.6 # W/m/K
[]
[]
[Postprocessors]
[Tcore_avg]
type = ElementAverageValue
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${core_blocks}'
[]
[Trpv_avg]
type = ElementAverageValue
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${rpv_blocks}'
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = '${core_blocks}'
[]
[rpv_convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = Tsolid
boundary = 'outer' # outer RVP
T_fluid = ${rpv_outer_Tinf}
htc = ${rpv_outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(rpv_convective_out - ptot) / ptot'
pp_names = 'rpv_convective_out ptot'
[]
[]
[Executioner]
type = Steady
automatic_scaling = true
compute_scaling_once = false
petsc_options_iname = '-pc_type -pc_hypre_type -ksp_gmres_restart '
petsc_options_value = 'hypre boomeramg 100'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-10
l_max_its = 100
[Quadrature]
side_order = seventh
[]
line_search = none
[]
[Outputs]
exodus = false
csv = true
[]
(modules/heat_transfer/test/tests/meshed_gap_thermal_contact/meshed_annulus_thermal_contact.i)
[Mesh]
[fmesh]
type = FileMeshGenerator
file = meshed_annulus.e
[]
[rename]
type = RenameBlockGenerator
input = fmesh
old_block = '1 2 3'
new_block = '1 4 3'
[]
[]
[Variables]
[./temp]
block = '1 3'
initial_condition = 1.0
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
block = '1 3'
[../]
[./source]
type = HeatSource
variable = temp
block = 3
value = 10.0
[../]
[]
[BCs]
[./outside]
type = DirichletBC
variable = temp
boundary = 1
value = 1.0
[../]
[]
[ThermalContact]
[./gap_conductivity]
type = GapHeatTransfer
variable = temp
primary = 2
secondary = 3
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 0.5
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = '1 3'
temp = temp
thermal_conductivity = 1
[../]
[]
[Problem]
type = FEProblem
kernel_coverage_check = false
material_coverage_check = false
[]
[Executioner]
type = Steady
solve_type = PJFNK
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
[./out]
type = Exodus
[../]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_syntax.i)
#
# 1-D Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two element blocks containing one element each. Each
# element is a unit cube. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far left boundary
# is ramped from 100 to 200 over one time unit. The temperature of the far right
# boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks:
#
# Flux = (T_left - T_right) * (gapK/gap_width)
#
# The gap conductivity is specified as 1, thus
#
# gapK(Tavg) = 1.0*Tavg
#
#
# The heat flux across the gap at time = 1 is then:
#
# Flux(2) = 100 * (1.0/1.0) = 100
#
# For comparison, see results from the flux post processors
#
# This test has been augmented with a second scalar field that solves nearly
# the same problem. The conductivity has been changed to 10. Thus, the
# flux for the second field is 1000.
#
[Mesh]
file = gap_heat_transfer_htonly_test.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
[../]
[./awesomium_contact]
type = GapHeatTransfer
variable = awesomium
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 10
appended_property_name = _awesomium
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[./awesomium]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[./gap_cond_awesomium]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./awe]
type = HeatConduction
variable = awesomium
[../]
[]
[BCs]
[./temp_far_left]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[./awesomium_far_left]
type = FunctionDirichletBC
boundary = 1
variable = awesomium
function = temp
[../]
[./awesomium_far_right]
type = DirichletBC
boundary = 4
variable = awesomium
value = 100
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 2
[../]
[./conductance_awe]
type = MaterialRealAux
property = gap_conductance_awesomium
variable = gap_cond_awesomium
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_rel_tol = 1e-12
l_tol = 1e-3
l_max_its = 100
dt = 1e-1
end_time = 1.0
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./awe_left]
type = SideAverageValue
boundary = 2
variable = awesomium
execute_on = 'initial timestep_end'
[../]
[./awe_right]
type = SideAverageValue
boundary = 3
variable = awesomium
execute_on = 'initial timestep_end'
[../]
[./awe_flux_left]
type = SideDiffusiveFluxIntegral
variable = awesomium
boundary = 2
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./awe_flux_right]
type = SideDiffusiveFluxIntegral
variable = awesomium
boundary = 3
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_test.i)
#
# 1-D Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two element blocks containing one element each. Each
# element is a unit cube. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far left boundary
# is ramped from 100 to 200 over one time unit. The temperature of the far right
# boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks:
#
# Flux = (T_left - T_right) * (gapK/gap_width)
#
# The gap conductivity is specified as 1, thus
#
# gapK(Tavg) = 1.0*Tavg
#
#
# The heat flux across the gap at time = 1 is then:
#
# Flux(2) = 100 * (1.0/1.0) = 100
#
# For comparison, see results from the flux post processors
#
# This test has been augmented with a second scalar field that solves nearly
# the same problem. The conductivity has been changed to 10. Thus, the
# flux for the second field is 1000.
#
[Mesh]
file = gap_heat_transfer_htonly_test.e
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
[../]
[./awesomium_contact]
type = GapHeatTransfer
variable = awesomium
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 10
appended_property_name = _awesomium
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[./awesomium]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[./gap_cond_awesomium]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./awe]
type = HeatConduction
variable = awesomium
[../]
[]
[BCs]
[./temp_far_left]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[./awesomium_far_left]
type = FunctionDirichletBC
boundary = 1
variable = awesomium
function = temp
[../]
[./awesomium_far_right]
type = DirichletBC
boundary = 4
variable = awesomium
value = 100
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 2
[../]
[./conductance_awe]
type = MaterialRealAux
property = gap_conductance_awesomium
variable = gap_cond_awesomium
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_rel_tol = 1e-12
l_tol = 1e-3
l_max_its = 100
dt = 1e-1
end_time = 1.0
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./awe_left]
type = SideAverageValue
boundary = 2
variable = awesomium
execute_on = 'initial timestep_end'
[../]
[./awe_right]
type = SideAverageValue
boundary = 3
variable = awesomium
execute_on = 'initial timestep_end'
[../]
[./awe_flux_left]
type = SideDiffusiveFluxIntegral
variable = awesomium
boundary = 2
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./awe_flux_right]
type = SideDiffusiveFluxIntegral
variable = awesomium
boundary = 3
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/heat_conduction/3d_quadrature_gap_heat_transfer/nonmatching.i)
[Mesh]
file = nonmatching.e
[]
[Variables]
[./temp]
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 1000
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
variable = temp
emissivity_primary = 0
emissivity_secondary = 0
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Postprocessors]
[./left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = leftright
diffusivity = thermal_conductivity
[../]
[./right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = rightleft
diffusivity = thermal_conductivity
[../]
[]
[Executioner]
type = Steady
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
exodus = true
[]
(modules/combined/test/tests/gap_heat_transfer_convex/gap_heat_transfer_convex_gap_offsets.i)
#The two blocks were moved apart by the value of 0.005 in the y-direction, respectively.
#This value was compensated by the gap offsets from both secondary and primary sides
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
temperature = temp
[]
[Mesh]
file = gap_heat_transfer_convex_gap_offsets.e
[]
[Functions]
[./disp]
type = PiecewiseLinear
x = '0 2.0'
y = '0 1.0'
[../]
[./temp]
type = PiecewiseLinear
x = '0 1'
y = '200 200'
[../]
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./temp]
initial_condition = 100
[../]
[]
[AuxVariables]
[./primary_gap_offset]
[../]
[./secondary_gap_offset]
[../]
[./mapped_primary_gap_offset]
[../]
[]
[AuxKernels]
[./primary_gap_offset]
type = ConstantAux
variable = primary_gap_offset
value = -0.005
boundary = 2
[../]
[./mapped_primary_gap_offset]
type = GapValueAux
variable = mapped_primary_gap_offset
paired_variable = primary_gap_offset
boundary = 3
paired_boundary = 2
[../]
[./secondary_gap_offset]
type = ConstantAux
variable = secondary_gap_offset
value = -0.005
boundary = 3
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 2
secondary = 3
emissivity_primary = 0
emissivity_secondary = 0
secondary_gap_offset = secondary_gap_offset
mapped_primary_gap_offset = mapped_primary_gap_offset
[../]
[]
[Physics/SolidMechanics/QuasiStatic/All]
volumetric_locking_correction = true
strain = FINITE
eigenstrain_names = eigenstrain
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./move_right]
type = FunctionDirichletBC
boundary = '3'
variable = disp_x
function = disp
[../]
[./fixed_x]
type = DirichletBC
boundary = '1'
variable = disp_x
value = 0
[../]
[./fixed_y]
type = DirichletBC
boundary = '1 2 3 4'
variable = disp_y
value = 0
[../]
[./fixed_z]
type = DirichletBC
boundary = '1 2 3 4'
variable = disp_z
value = 0
[../]
[./temp_bottom]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_top]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = '1 2'
youngs_modulus = 1e6
poissons_ratio = 0.3
[../]
[./thermal_strain]
type = ComputeThermalExpansionEigenstrain
stress_free_temperature = 100
thermal_expansion_coeff = 0
eigenstrain_name = eigenstrain
[../]
[./stress]
type = ComputeFiniteStrainElasticStress
[../]
[./heat1]
type = HeatConductionMaterial
block = 1
specific_heat = 1.0
thermal_conductivity = 1.0
[../]
[./heat2]
type = HeatConductionMaterial
block = 2
specific_heat = 1.0
thermal_conductivity = 1.0
[../]
[./density]
type = Density
block = '1 2'
density = 1.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
start_time = 0.0
dt = 0.1
end_time = 2.0
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/gap_heat_transfer_htonly_rspherical.i)
#
# 1-D spherical Gap Heat Transfer Test
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two "blocks" with a mesh biased toward the gap
# between them. Each block is unit length. The gap between them is one
# unit in length.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far left boundary
# is ramped from 100 to 200 over one time unit, and then held fixed for an additional
# time unit. The temperature of the far right boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks, or spheres in the case of RSPHERICAL.:
#
# Flux = (T_left - T_right) * (gapK/(r^2*((1/r1)-(1/r2))))
#
# For gapK = 1 (default value)
#
# The area is taken as the area of the secondary (inner) surface:
#
# Area = 4 * pi * 1 * 1
#
# The integrated heat flux across the gap at time 2 is then:
#
# 4*pi*k*delta_T/((1/r1)-(1/r2))
# 4*pi*1*100/((1/1) - (1/2)) = 2513.3 watts
#
# For comparison, see results from the flux post processors.
#
#
[Mesh]
file = gap_heat_transfer_htonly_rspherical.e
construct_side_list_from_node_list = true
coord_type = RSPHERICAL
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
gap_geometry_type = sphere
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./temp_far_left]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_right]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 1e6
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
# I don't know enough about this test to say why it needs such a
# loose nl_abs_tol... after timestep 10 the residual basically can't
# be reduced much beyond the initial residual. The test probably
# needs to be revisited to determine why.
nl_abs_tol = 1e-3
nl_rel_tol = 1e-10
l_tol = 1e-6
l_max_its = 100
line_search = 'none'
nl_max_its = 10
dt = 1e-1
dtmin = 1e-1
end_time = 2.0
[]
[Postprocessors]
[./temp_left]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_right]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
[../]
[./flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/meshed_gap_thermal_contact/meshed_gap_thermal_contact.i)
[Mesh]
[fmesh]
type = FileMeshGenerator
file = meshed_gap.e
[]
[block0]
type = SubdomainBoundingBoxGenerator
input = fmesh
bottom_left = '.5 -.5 0'
top_right = '.7 .5 0'
block_id = 4
[]
[]
[Variables]
[./temp]
block = '1 3'
initial_condition = 1.0
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
block = '1 3'
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = 1
value = 1
[../]
[./right]
type = DirichletBC
variable = temp
boundary = 4
value = 2
[../]
[]
[ThermalContact]
[./gap_conductivity]
type = GapHeatTransfer
variable = temp
primary = 2
secondary = 3
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 0.5
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = '1 3'
temp = temp
thermal_conductivity = 1
[../]
[]
[Problem]
type = FEProblem
kernel_coverage_check = false
material_coverage_check = false
[]
[Executioner]
type = Steady
solve_type = PJFNK
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
[./out]
type = Exodus
[../]
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_mortar/large_gap_heat_transfer_test_rz_cylinder.i)
rpv_core_gap_size = 0.2
core_outer_radius = 2
rpv_inner_radius = '${fparse 2 + rpv_core_gap_size}'
rpv_outer_radius = '${fparse 2.5 + rpv_core_gap_size}'
rpv_width = '${fparse rpv_outer_radius - rpv_inner_radius}'
rpv_outer_htc = 10 # W/m^2/K
rpv_outer_Tinf = 300 # K
core_blocks = '1'
rpv_blocks = '3'
[Mesh]
[gmg]
type = CartesianMeshGenerator
dim = 2
dx = '${core_outer_radius} ${rpv_core_gap_size} ${rpv_width}'
ix = '400 1 100'
dy = 1
iy = '5'
[]
[set_block_id1]
type = SubdomainBoundingBoxGenerator
input = gmg
bottom_left = '0 0 0'
top_right = '${core_outer_radius} 1 0'
block_id = 1
location = INSIDE
[]
[rename_core_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = set_block_id1
primary_block = 1
paired_block = 0
new_boundary = 'core_outer'
[]
[set_block_id3]
type = SubdomainBoundingBoxGenerator
input = rename_core_bdy
bottom_left = '${rpv_inner_radius} 0 0'
top_right = '${rpv_outer_radius} 1 0'
block_id = 3
location = INSIDE
[]
[rename_inner_rpv_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = set_block_id3
primary_block = 3
paired_block = 0
new_boundary = 'rpv_inner'
[]
# comment out for test without gap
[2d_mesh]
type = BlockDeletionGenerator
input = rename_inner_rpv_bdy
block = 0
[]
allow_renumbering = false
coord_type = RZ
[]
[Variables]
[Tsolid]
initial_condition = 500
[]
[]
[Kernels]
[heat_source]
type = CoupledForce
variable = Tsolid
block = '${core_blocks}'
v = power_density
[]
[heat_conduction]
type = HeatConduction
variable = Tsolid
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = Tsolid
boundary = 'right' # outer RPV
coefficient = ${rpv_outer_htc}
T_infinity = ${rpv_outer_Tinf}
[]
[]
[ThermalContact]
[RPV_gap]
type = GapHeatTransfer
gap_geometry_type = 'CYLINDER'
emissivity_primary = 0.8
emissivity_secondary = 0.8
variable = Tsolid
primary = 'core_outer'
secondary = 'rpv_inner'
gap_conductivity = 0.1
quadrature = true
[]
[]
[AuxVariables]
[power_density]
block = '${core_blocks}'
initial_condition = 50e3
[]
[]
[Materials]
[simple_mat]
type = HeatConductionMaterial
thermal_conductivity = 34.6 # W/m/K
[]
[]
[Postprocessors]
[Tcore_avg]
type = ElementAverageValue
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${core_blocks}'
[]
[Trpv_avg]
type = ElementAverageValue
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${rpv_blocks}'
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = '${core_blocks}'
[]
[rpv_convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = Tsolid
boundary = 'right' # outer RVP
T_fluid = ${rpv_outer_Tinf}
htc = ${rpv_outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(rpv_convective_out - ptot) / ptot'
pp_names = 'rpv_convective_out ptot'
[]
[flux_from_core] # converges to ptot as the mesh is refined
type = SideDiffusiveFluxIntegral
variable = Tsolid
boundary = core_outer
diffusivity = thermal_conductivity
[]
[flux_into_rpv] # converges to rpv_convective_out as the mesh is refined
type = SideDiffusiveFluxIntegral
variable = Tsolid
boundary = rpv_inner
diffusivity = thermal_conductivity
[]
[]
[VectorPostprocessors]
[NodalTemperature]
type = NodalValueSampler
sort_by = id
boundary = 'rpv_inner core_outer'
variable = Tsolid
[]
[]
[Executioner]
type = Steady
automatic_scaling = true
compute_scaling_once = false
petsc_options_iname = '-pc_type -pc_hypre_type -ksp_gmres_restart '
petsc_options_value = 'hypre boomeramg 100'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-10
l_max_its = 100
[Quadrature]
# order = fifth
side_order = seventh
[]
line_search = none
[]
[Outputs]
exodus = false
csv = true
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/second_order.i)
[Mesh]
file = nonmatching.e
second_order = true
[]
[Variables]
[./temp]
order = SECOND
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 1000
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
emissivity_primary = 0
emissivity_secondary = 0
secondary = leftright
quadrature = true
primary = rightleft
variable = temp
type = GapHeatTransfer
order = SECOND
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Postprocessors]
[./left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = leftright
diffusivity = thermal_conductivity
[../]
[./right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = rightleft
diffusivity = thermal_conductivity
[../]
[]
[Executioner]
type = Steady
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/perfect.i)
[Mesh]
file = perfect.e
[]
[Variables]
[./temp]
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 300
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
emissivity_primary = 0
emissivity_secondary = 0
variable = temp
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Executioner]
type = Steady
solve_type = 'PJFNK'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/heat_conduction/3d_quadrature_gap_heat_transfer/second.i)
[Mesh]
file = nonmatching.e
second_order = true
[]
[Variables]
[./temp]
order = SECOND
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 1000
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
variable = temp
emissivity_primary = 0
emissivity_secondary = 0
type = GapHeatTransfer
order = SECOND
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Postprocessors]
[./left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = leftright
diffusivity = thermal_conductivity
[../]
[./right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = rightleft
diffusivity = thermal_conductivity
[../]
[]
[Executioner]
type = Steady
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_mortar/gap_heat_transfer_3D.i)
outer_htc = 10 # W/m^2/K
outer_Tinf = 300 # K
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
[left_block]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 6
nz = 6
xmin = -1
xmax = -0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
elem_type = HEX27
[]
[left_block_sidesets]
type = RenameBoundaryGenerator
input = left_block
old_boundary = '0 1 2 3 4 5'
new_boundary = 'left_bottom left_back left_right left_front left_left left_top'
[]
[left_block_id]
type = SubdomainIDGenerator
input = left_block_sidesets
subdomain_id = 1
[]
[right_block]
type = GeneratedMeshGenerator
dim = 3
nx = 4
ny = 8
nz = 8
xmin = 0.5
xmax = 1
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
elem_type = HEX27
[]
[right_block_sidesets]
type = RenameBoundaryGenerator
input = right_block
old_boundary = '0 1 2 3 4 5'
# new_boundary = 'right_bottom right_back right_right right_front right_left right_top'
new_boundary = '100 101 102 103 104 105'
[]
[right_block_sidesets_rename]
type = RenameBoundaryGenerator
input = right_block_sidesets
old_boundary = '100 101 102 103 104 105'
new_boundary = 'right_bottom right_back right_right right_front right_left right_top'
[]
[right_block_id]
type = SubdomainIDGenerator
input = right_block_sidesets_rename
subdomain_id = 2
[]
[combined_mesh]
type = MeshCollectionGenerator
inputs = 'left_block_id right_block_id'
[]
[]
[Functions]
[temp]
type = PiecewiseLinear
x = '0 1'
y = '100 200'
[]
[]
[Variables]
[temp]
initial_condition = 500
[]
[]
[AuxVariables]
[gap_conductance]
order = CONSTANT
family = MONOMIAL
[]
[power_density]
block = 1
initial_condition = 50e3
[]
[]
[Kernels]
[heat_conduction]
type = HeatConduction
variable = temp
[]
[heat_source]
type = CoupledForce
variable = temp
block = 1
v = power_density
[]
[]
[AuxKernels]
[gap_cond]
type = MaterialRealAux
property = gap_conductance
variable = gap_conductance
boundary = 'left_right'
[]
[]
[Materials]
[heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 34.6
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 'right_left'
secondary = 'left_right'
emissivity_primary = 0
emissivity_secondary = 0
gap_conductivity = 5
gap_geometry_type = PLATE
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = temp
boundary = 'right_right' # outer RPV
coefficient = ${outer_htc}
T_infinity = ${outer_Tinf}
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = 'lu superlu_dist'
dt = 1
dtmin = 0.01
end_time = 1
nl_rel_tol = 1e-12
nl_abs_tol = 1e-8
[Quadrature]
order = fifth
side_order = seventh
[]
[]
[Outputs]
exodus = true
csv = true
[Console]
type = Console
[]
[]
[Postprocessors]
[temp_left]
type = SideAverageValue
boundary = 'left_right'
variable = temp
[]
[temp_right]
type = SideAverageValue
boundary = 'right_left'
variable = temp
[]
[flux_left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 'left_right'
diffusivity = thermal_conductivity
[]
[flux_right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 'right_left'
diffusivity = thermal_conductivity
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = 1
[]
[convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = temp
boundary = 'right_right' # outer RVP
T_fluid = ${outer_Tinf}
htc = ${outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(convective_out - ptot) / ptot'
pp_names = 'convective_out ptot'
[]
[]
[VectorPostprocessors]
[NodalTemperature]
type = NodalValueSampler
sort_by = id
boundary = 'left_right right_left'
variable = temp
[]
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/nonmatching.i)
[Mesh]
file = nonmatching.e
[]
[Variables]
[./temp]
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./left]
type = DirichletBC
variable = temp
boundary = leftleft
value = 1000
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
emissivity_primary = 0
emissivity_secondary = 0
secondary = leftright
quadrature = true
primary = rightleft
variable = temp
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
[../]
[./gap_conductance]
type = GenericConstantMaterial
prop_names = 'gap_conductance gap_conductance_dT'
boundary = 'leftright rightleft'
prop_values = '1 0'
[../]
[]
[Postprocessors]
[./left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = leftright
diffusivity = thermal_conductivity
[../]
[./right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = rightleft
diffusivity = thermal_conductivity
[../]
[]
[Executioner]
type = Steady
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/heat_conduction/min_gap/min_gap.i)
[Mesh]
type = MeshGeneratorMesh
displacements = 'disp_x disp_y'
[./left_gen]
type = GeneratedMeshGenerator
dim = 2
nx = 2
ny = 3
xmin = -3
xmax = 0
ymin = -5
ymax = 5
[../]
[./right_gen]
type = GeneratedMeshGenerator
dim = 2
nx = 2
ny = 3
xmin = 3
xmax = 6
ymin = -5
ymax = 5
[../]
[./left_and_right]
type = MeshCollectionGenerator
inputs = 'left_gen right_gen'
[../]
[./leftleft]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = leftleft
normal = '-1 0 0'
input = left_and_right
[../]
[./leftright]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = leftright
normal = '1 0 0'
input = leftleft
[../]
[./right]
type = SubdomainBoundingBoxGenerator
top_right = '6 5 0'
bottom_left = '3 -5 0'
block_id = 1
input = leftright
[../]
[./rightleft]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = rightleft
normal = '-1 0 0'
input = right
[../]
[./rightright]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = rightright
normal = '1 0 0'
input = rightleft
[../]
[]
[Variables]
[./temp]
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./disp_y]
[../]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./disp_x]
type = ParsedFunction
expression = -3+t
[../]
[./left_temp]
type = ParsedFunction
expression = 1000+t
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./disp_x]
type = FunctionAux
block = 1
variable = disp_x
function = disp_x
execute_on = 'INITIAL TIMESTEP_END'
[../]
[./gap_conductivity]
type = MaterialRealAux
boundary = leftright
property = gap_conductance
variable = gap_conductance
execute_on = 'INITIAL TIMESTEP_END'
[../]
[]
[BCs]
[./left]
type = FunctionDirichletBC
variable = temp
boundary = leftleft
function = left_temp
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
variable = temp
min_gap = 1
min_gap_order = 1
emissivity_primary = 0
emissivity_secondary = 0
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = '0 1'
specific_heat = 1
thermal_conductivity = 1
use_displaced_mesh = true
[../]
[]
[Postprocessors]
[./gap_conductance]
type = PointValue
point = '0 0 0'
variable = gap_conductance
[../]
[]
[Executioner]
type = Transient
dt = 0.25
end_time = 3.0
solve_type = 'PJFNK'
[]
[Outputs]
csv = true
execute_on = 'TIMESTEP_END'
[]
(modules/heat_transfer/test/tests/multiple_contact_pairs/multiple_contact_pairs.i)
[Mesh]
file = 3blk.e
[]
[Functions]
[temperature]
type = PiecewiseLinear
x = '0 1 2'
y = '100 300 300'
[]
[]
[ThermalContact]
[thermal_contact]
type = GapHeatTransfer
variable = temperature
primary = '101 201'
secondary = '100 200'
emissivity_primary = 0
emissivity_secondary = 0
gap_conductance = 1.0e9
[]
[]
[Variables]
[temperature]
order = FIRST
family = LAGRANGE
initial_condition = 100
[]
[]
[AuxVariables]
[gap_cond]
order = CONSTANT
family = MONOMIAL
[]
[]
[Kernels]
[heat]
type = HeatConduction
variable = temperature
[]
[]
[BCs]
[temp_far_left]
type = FunctionDirichletBC
boundary = '101 201'
variable = temperature
function = temperature
[]
[temp_far_right]
type = DirichletBC
boundary = 'left right'
variable = temperature
value = 100
[]
[]
[AuxKernels]
[conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 100
[]
[]
[Materials]
[heat1]
type = HeatConductionMaterial
block = '1 2 3'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[]
[density]
type = GenericConstantMaterial
block = '1 2 3'
prop_names = 'density'
prop_values = '1.0'
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_rel_tol = 1e-8
l_tol = 1e-3
l_max_its = 100
dt = 1e-1
end_time = 1.0
[]
[Postprocessors]
[temp_left]
type = SideAverageValue
boundary = 100
variable = temperature
execute_on = 'initial timestep_end'
[]
[temp_right]
type = SideAverageValue
boundary = 200
variable = temperature
execute_on = 'initial timestep_end'
[]
[flux_left]
type = SideDiffusiveFluxIntegral
variable = temperature
boundary = 100
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[]
[flux_right]
type = SideDiffusiveFluxIntegral
variable = temperature
boundary = 200
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[]
[]
[Outputs]
exodus = false
csv = true
[]
(modules/heat_transfer/test/tests/recover/recover.i)
[GlobalParams]
order = SECOND
family = LAGRANGE
[]
[Mesh]
file = recover_in.e
coord_type = RZ
[]
[Variables]
[./temp]
initial_condition = 580.0
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./heat_source]
type = BodyForce
variable = temp
block = pellet_type_1
value = 1e3
function = 't'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 5
secondary = 10
emissivity_primary = 0
emissivity_secondary = 0
quadrature = true
[../]
[]
[BCs]
[./outside]
type = DirichletBC
value = 580
boundary = '1 2 3'
variable = temp
[../]
[./edge]
type = DirichletBC
value = 700
boundary = 10
variable = temp
[../]
[]
[Materials]
[./thermal_3]
type = HeatConductionMaterial
block = 3
thermal_conductivity = 5
specific_heat = 12
[../]
[./thermal_1]
type = HeatConductionMaterial
block = 1
thermal_conductivity = 16.0
specific_heat = 330.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = ' lu superlu_dist'
nl_rel_tol = 1e-9
nl_abs_tol = 1e-11
start_time = -200
n_startup_steps = 1
end_time = 1.02e5
num_steps = 10
dtmax = 2e6
dtmin = 1
[./TimeStepper]
type = IterationAdaptiveDT
dt = 2.0e2
optimal_iterations = 15
iteration_window = 2
[../]
[./Quadrature]
order = FIFTH
side_order = SEVENTH
[../]
[]
[Postprocessors]
[./ave_temp_interior]
type = SideAverageValue
boundary = 9
variable = temp
execute_on = 'initial linear'
[../]
[./avg_clad_temp]
type = SideAverageValue
boundary = 7
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_from_clad]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 5
diffusivity = thermal_conductivity
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_balance/large_gap_heat_transfer_test_rz_cylinder.i)
rpv_core_gap_size = 0.2
core_outer_radius = 2
rpv_inner_radius = '${fparse 2 + rpv_core_gap_size}'
rpv_outer_radius = '${fparse 2.5 + rpv_core_gap_size}'
rpv_width = '${fparse rpv_outer_radius - rpv_inner_radius}'
rpv_outer_htc = 10 # W/m^2/K
rpv_outer_Tinf = 300 # K
core_blocks = '1'
rpv_blocks = '3'
[Mesh]
[gmg]
type = CartesianMeshGenerator
dim = 2
dx = '${core_outer_radius} ${rpv_core_gap_size} ${rpv_width}'
ix = '400 1 100'
dy = 1
iy = '5'
[]
[set_block_id1]
type = SubdomainBoundingBoxGenerator
input = gmg
bottom_left = '0 0 0'
top_right = '${core_outer_radius} 1 0'
block_id = 1
location = INSIDE
[]
[rename_core_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = set_block_id1
primary_block = 1
paired_block = 0
new_boundary = 'core_outer'
[]
[set_block_id3]
type = SubdomainBoundingBoxGenerator
input = rename_core_bdy
bottom_left = '${rpv_inner_radius} 0 0'
top_right = '${rpv_outer_radius} 1 0'
block_id = 3
location = INSIDE
[]
[rename_inner_rpv_bdy]
type = SideSetsBetweenSubdomainsGenerator
input = set_block_id3
primary_block = 3
paired_block = 0
new_boundary = 'rpv_inner'
[]
# comment out for test without gap
[2d_mesh]
type = BlockDeletionGenerator
input = rename_inner_rpv_bdy
block = 0
[]
coord_type = RZ
[]
[Variables]
[Tsolid]
initial_condition = 500
[]
[]
[Kernels]
[heat_source]
type = CoupledForce
variable = Tsolid
block = '${core_blocks}'
v = power_density
[]
[heat_conduction]
type = HeatConduction
variable = Tsolid
[]
[]
[BCs]
[RPV_out_BC] # k \nabla T = h (T- T_inf) at RPV outer boundary
type = ConvectiveFluxFunction # (Robin BC)
variable = Tsolid
boundary = 'right' # outer RPV
coefficient = ${rpv_outer_htc}
T_infinity = ${rpv_outer_Tinf}
[]
[]
[ThermalContact]
[RPV_gap]
type = GapHeatTransfer
gap_geometry_type = 'CYLINDER'
emissivity_primary = 0.8
emissivity_secondary = 0.8
variable = Tsolid
primary = 'core_outer'
secondary = 'rpv_inner'
gap_conductivity = 0.1
quadrature = true
[]
[]
[AuxVariables]
[power_density]
block = '${core_blocks}'
initial_condition = 50e3
[]
[]
[Materials]
[simple_mat]
type = HeatConductionMaterial
thermal_conductivity = 34.6 # W/m/K
[]
[]
[Postprocessors]
[Tcore_avg]
type = ElementAverageValue
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${core_blocks}'
[]
[Tcore_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${core_blocks}'
[]
[Trpv_avg]
type = ElementAverageValue
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_max]
type = ElementExtremeValue
value_type = max
variable = Tsolid
block = '${rpv_blocks}'
[]
[Trpv_min]
type = ElementExtremeValue
value_type = min
variable = Tsolid
block = '${rpv_blocks}'
[]
[ptot]
type = ElementIntegralVariablePostprocessor
variable = power_density
block = '${core_blocks}'
[]
[rpv_convective_out]
type = ConvectiveHeatTransferSideIntegral
T_solid = Tsolid
boundary = 'right' # outer RVP
T_fluid = ${rpv_outer_Tinf}
htc = ${rpv_outer_htc}
[]
[heat_balance] # should be equal to 0 upon convergence
type = ParsedPostprocessor
expression = '(rpv_convective_out - ptot) / ptot'
pp_names = 'rpv_convective_out ptot'
[]
[flux_from_core] # converges to ptot as the mesh is refined
type = SideDiffusiveFluxIntegral
variable = Tsolid
boundary = core_outer
diffusivity = thermal_conductivity
[]
[flux_into_rpv] # converges to rpv_convective_out as the mesh is refined
type = SideDiffusiveFluxIntegral
variable = Tsolid
boundary = rpv_inner
diffusivity = thermal_conductivity
[]
[]
[Executioner]
type = Steady
automatic_scaling = true
compute_scaling_once = false
petsc_options_iname = '-pc_type -pc_hypre_type -ksp_gmres_restart '
petsc_options_value = 'hypre boomeramg 100'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-10
l_max_its = 100
[Quadrature]
# order = fifth
side_order = seventh
[]
line_search = none
[]
[Outputs]
exodus = false
csv = true
[]
(modules/heat_transfer/test/tests/heat_conduction/2d_quadrature_gap_heat_transfer/moving.i)
[Mesh]
file = nonmatching.e
displacements = 'disp_x disp_y'
[]
[Variables]
[temp]
[]
[]
[AuxVariables]
[disp_x]
[]
[disp_y]
[]
[]
[Functions]
[disp_y]
type = ParsedFunction
expression = 0.1*t
[]
[left_temp]
type = ParsedFunction
expression = 1000+t
[]
[]
[Kernels]
[hc]
type = HeatConduction
variable = temp
[]
[]
[AuxKernels]
[disp_y]
type = FunctionAux
variable = disp_y
function = disp_y
block = left
execute_on = 'INITIAL TIMESTEP_BEGIN'
[]
[]
[BCs]
[left]
type = FunctionDirichletBC
variable = temp
boundary = leftleft
function = left_temp
[]
[right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[]
[]
[ThermalContact]
[left_to_right]
secondary = leftright
quadrature = true
primary = rightleft
emissivity_primary = 0
emissivity_secondary = 0
variable = temp
type = GapHeatTransfer
[]
[]
[Materials]
[hcm]
type = HeatConductionMaterial
block = 'left right'
specific_heat = 1
thermal_conductivity = 1
use_displaced_mesh = true
[]
[]
[Postprocessors]
[left]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = leftright
diffusivity = thermal_conductivity
[]
[right]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = rightleft
diffusivity = thermal_conductivity
[]
[]
[Executioner]
type = Transient
num_steps = 9
dt = 1
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_hypre_type'
petsc_options_value = 'hypre boomeramg'
[]
[Outputs]
exodus = true
[]
(modules/heat_transfer/test/tests/gap_heat_transfer_htonly/planar_xz.i)
# 1-D Gap Heat Transfer Test without mechanics
#
# This test exercises 1-D gap heat transfer for a constant conductivity gap.
#
# The mesh consists of two element blocks in the x-z plane. Each element block
# is a square. They sit next to one another with a unit between them.
#
# The conductivity of both blocks is set very large to achieve a uniform temperature
# across each block. The temperature of the far bottom boundary
# is ramped from 100 to 200 over one time unit. The temperature of the far top
# boundary is held fixed at 100.
#
# A simple analytical solution is possible for the heat flux between the blocks:
#
# Flux = (T_left - T_right) * (gapK/gap_width)
#
# The gap conductivity is specified as 1, thus
#
# gapK(Tavg) = 1.0*Tavg
#
# The heat flux across the gap at time = 1 is then:
#
# Flux = 100 * (1.0/1.0) = 100
#
# For comparison, see results from the flux post processors. These results
# are the same as for the unit 1-D gap heat transfer between two unit cubes.
[Mesh]
[file]
type = FileMeshGenerator
file = simple_2D.e
[]
[./rotate]
type = TransformGenerator
transform = ROTATE
vector_value = '0 90 0'
input = file
[../]
[]
[Functions]
[./temp]
type = PiecewiseLinear
x = '0 1 2'
y = '100 200 200'
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
primary = 3
secondary = 2
emissivity_primary = 0
emissivity_secondary = 0
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 100
[../]
[]
[AuxVariables]
[./gap_cond]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./temp_far_bottom]
type = FunctionDirichletBC
boundary = 1
variable = temp
function = temp
[../]
[./temp_far_top]
type = DirichletBC
boundary = 4
variable = temp
value = 100
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = gap_conductance
variable = gap_cond
boundary = 2
[../]
[]
[Materials]
[./heat1]
type = HeatConductionMaterial
block = '1 2'
specific_heat = 1.0
thermal_conductivity = 100000000.0
[../]
[./density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
nl_rel_tol = 1e-12
l_tol = 1e-3
l_max_its = 100
dt = 1e-1
end_time = 1.0
[]
[Postprocessors]
[./temp_bottom]
type = SideAverageValue
boundary = 2
variable = temp
execute_on = 'initial timestep_end'
[../]
[./temp_top]
type = SideAverageValue
boundary = 3
variable = temp
execute_on = 'initial timestep_end'
[../]
[./flux_bottom]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 2
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[./flux_top]
type = SideDiffusiveFluxIntegral
variable = temp
boundary = 3
diffusivity = thermal_conductivity
execute_on = 'initial timestep_end'
[../]
[]
[Outputs]
exodus = true
[]