StitchedMeshGenerator

Allows multiple mesh files to be stiched together to form a single mesh.

Example

Consider the following three meshes.

Fig. 1: Left portion of "stitched" mesh (left.e).

Fig. 2: Center portion of "stitched" mesh (center.e).

Fig. 3: Right portion of "stitched" mesh (right.e).

Using the StitchedMeshGenerator object from within the Mesh block of the input file, as shown in the input file snippet below, these three square meshes are joined into a single mesh as shown in Figure 4.

[Mesh]
  [./fmg_left]
    type = FileMeshGenerator
    file = left.e
  []

  [./fmg_center]
    type = FileMeshGenerator
    file = center.e
  []

  [./fmg_right]
    type = FileMeshGenerator
    file = right.e
  []

  [./smg]
    type = StitchedMeshGenerator
    inputs = 'fmg_left fmg_center fmg_right'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'right left;
                               right left'
    parallel_type = 'replicated'
  []
[]

Fig. 4: Resulting "stitched" mesh from combination of three square meshes.

Input Parameters

inputsThe input MeshGenerators.
C++ Type:std::vector<MeshGeneratorName>
Options:
Description:The input MeshGenerators.
stitch_boundaries_pairsPairs of boundaries to be stitched together between the 1st mesh in inputs and each consecutive mesh
C++ Type:std::vector<std::vector<std::string>>
Options:
Description:Pairs of boundaries to be stitched together between the 1st mesh in inputs and each consecutive mesh

Required Parameters

algorithmBINARYControl the use of binary search for the nodes of the stitched surfaces.
Default:BINARY
C++ Type:MooseEnum
Options:BINARY, EXHAUSTIVE
Description:Control the use of binary search for the nodes of the stitched surfaces.
clear_stitched_boundary_idsTrueWhether or not to clear the stitched boundary IDs
Default:True
C++ Type:bool
Options:
Description:Whether or not to clear the stitched boundary IDs
show_infoFalseWhether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)
Default:False
C++ Type:bool
Options:
Description:Whether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Options:
Description:Adds user-defined labels for accessing object parameters via control logic.
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Options:
Description:Set the enabled status of the MooseObject.

Advanced Parameters

Input Files

(test/tests/mesh/multi_elem_integers/multi_element_integer.i)
(test/tests/meshgenerators/stitched_mesh_generator/stitched_mesh_generator.i)
(modules/porous_flow/examples/ates/ates.i)
(test/tests/meshgenerators/stitched_mesh_generator/stitched_mesh_generator2.i)

Child Objects

(test/include/meshgenerators/TestSubgenerators.h)

(test/tests/meshgenerators/stitched_mesh_generator/stitched_mesh_generator.i)

[Mesh]
  [./fmg_left]
    type = FileMeshGenerator
    file = left.e
  []

  [./fmg_center]
    type = FileMeshGenerator
    file = center.e
  []

  [./fmg_right]
    type = FileMeshGenerator
    file = right.e
  []

  [./smg]
    type = StitchedMeshGenerator
    inputs = 'fmg_left fmg_center fmg_right'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'right left;
                               right left'
    parallel_type = 'replicated'
  []
[]

[Outputs]
  exodus = true
[]

(test/tests/mesh/multi_elem_integers/multi_element_integer.i)

[Mesh]
  type = MeshGeneratorMesh
  parallel_type = 'replicated'

  [gmg1]
    type = GeneratedMeshGenerator
    dim = 2
    xmin = 0
    xmax = 1
    ymin = 0
    ymax = 1
    nx = 5
    ny = 5
    extra_element_integers = 'material_id'
  []
  [gmg2]
    type = GeneratedMeshGenerator
    dim = 2
    xmin = 1
    xmax = 2
    ymin = 0
    ymax = 1
    nx = 5
    ny = 5
    extra_element_integers = 'source_id'
  []
  [stitcher]
    type = StitchedMeshGenerator
    inputs = 'gmg1 gmg2'
    stitch_boundaries_pairs = 'right left'
  []
  [set_material_id0]
    type = SubdomainBoundingBoxGenerator
    input = stitcher
    bottom_left = '0 0 0'
    top_right = '1 1 0'
    block_id = 1
    location = INSIDE
    integer_name = material_id
  []
  [set_material_id1]
    type = SubdomainBoundingBoxGenerator
    input = set_material_id0
    bottom_left = '1 0 0'
    top_right = '2 1 0'
    block_id = 2
    location = INSIDE
    integer_name = material_id
  []
  [set_material_id2]
    type = SubdomainBoundingBoxGenerator
    input = set_material_id1
    bottom_left = '0 0 0'
    top_right = '1 1 0'
    block_id = 3
    location = INSIDE
    integer_name = source_id
  []
  [set_material_id3]
    type = SubdomainBoundingBoxGenerator
    input = set_material_id2
    bottom_left = '1 0 0'
    top_right = '2 1 0'
    block_id = 4
    location = INSIDE
    integer_name = source_id
  []
[]

[AuxVariables]
  [id1]
    family = MONOMIAL
    order = CONSTANT
  []
  [id2]
    family = MONOMIAL
    order = CONSTANT
  []
[]

[AuxKernels]
  [id1]
    type = ElementIntegerAux
    variable = id1
    integer_names = material_id
  []
  [id2]
    type = ElementIntegerAux
    variable = id2
    integer_names = source_id
  []
[]

[Problem]
  solve = false
[]

[Executioner]
  type = Steady
[]

[Outputs]
  exodus = true
[]

(test/tests/meshgenerators/stitched_mesh_generator/stitched_mesh_generator.i)

[Mesh]
  [./fmg_left]
    type = FileMeshGenerator
    file = left.e
  []

  [./fmg_center]
    type = FileMeshGenerator
    file = center.e
  []

  [./fmg_right]
    type = FileMeshGenerator
    file = right.e
  []

  [./smg]
    type = StitchedMeshGenerator
    inputs = 'fmg_left fmg_center fmg_right'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'right left;
                               right left'
    parallel_type = 'replicated'
  []
[]

[Outputs]
  exodus = true
[]

(modules/porous_flow/examples/ates/ates.i)

# Simulation designed to assess the recovery efficiency of a single-well ATES system
# Using KT stabilisation
# Boundary conditions: fixed porepressure and temperature at top, bottom and far end of model.

#####################################
flux_limiter = minmod # minmod, vanleer, mc, superbee, none
# depth of top of aquifer (m)
depth = 400

inject_fluid_mass = 1E8 # kg
produce_fluid_mass = ${inject_fluid_mass} # kg
inject_temp = 90 # degC

inject_time = 91 # days
store_time = 91 # days
produce_time = 91 # days
rest_time = 91 # days
num_cycles = 5 # Currently needs to be <= 10

cycle_length = ${fparse inject_time + store_time + produce_time + rest_time}

end_simulation = ${fparse cycle_length * num_cycles}

# Note: I have setup 10 cycles but you can set num_cycles less than 10.
start_injection1 = 0
start_injection2 = ${cycle_length}
start_injection3 = ${fparse cycle_length * 2}
start_injection4 = ${fparse cycle_length * 3}
start_injection5 = ${fparse cycle_length * 4}
start_injection6 = ${fparse cycle_length * 5}
start_injection7 = ${fparse cycle_length * 6}
start_injection8 = ${fparse cycle_length * 7}
start_injection9 = ${fparse cycle_length * 8}
start_injection10 = ${fparse cycle_length * 9}

end_injection1 = ${fparse start_injection1 + inject_time}
end_injection2 = ${fparse start_injection2 + inject_time}
end_injection3 = ${fparse start_injection3 + inject_time}
end_injection4 = ${fparse start_injection4 + inject_time}
end_injection5 = ${fparse start_injection5 + inject_time}
end_injection6 = ${fparse start_injection6 + inject_time}
end_injection7 = ${fparse start_injection7 + inject_time}
end_injection8 = ${fparse start_injection8 + inject_time}
end_injection9 = ${fparse start_injection9 + inject_time}
end_injection10 = ${fparse start_injection10 + inject_time}

start_production1 = ${fparse end_injection1 + store_time}
start_production2 = ${fparse end_injection2 + store_time}
start_production3 = ${fparse end_injection3 + store_time}
start_production4 = ${fparse end_injection4 + store_time}
start_production5 = ${fparse end_injection5 + store_time}
start_production6 = ${fparse end_injection6 + store_time}
start_production7 = ${fparse end_injection7 + store_time}
start_production8 = ${fparse end_injection8 + store_time}
start_production9 = ${fparse end_injection9 + store_time}
start_production10 = ${fparse end_injection10 + store_time}

end_production1 = ${fparse start_production1 + produce_time}
end_production2 = ${fparse start_production2 + produce_time}
end_production3 = ${fparse start_production3 + produce_time}
end_production4 = ${fparse start_production4 + produce_time}
end_production5 = ${fparse start_production5 + produce_time}
end_production6 = ${fparse start_production6 + produce_time}
end_production7 = ${fparse start_production7 + produce_time}
end_production8 = ${fparse start_production8 + produce_time}
end_production9 = ${fparse start_production9 + produce_time}
end_production10 = ${fparse start_production10 + produce_time}

synctimes = '${start_injection1} ${end_injection1} ${start_production1} ${end_production1}
             ${start_injection2} ${end_injection2} ${start_production2} ${end_production2}
             ${start_injection3} ${end_injection3} ${start_production3} ${end_production3}
             ${start_injection4} ${end_injection4} ${start_production4} ${end_production4}
             ${start_injection5} ${end_injection5} ${start_production5} ${end_production5}
             ${start_injection6} ${end_injection6} ${start_production6} ${end_production6}
             ${start_injection7} ${end_injection7} ${start_production7} ${end_production7}
             ${start_injection8} ${end_injection8} ${start_production8} ${end_production8}
             ${start_injection9} ${end_injection9} ${start_production9} ${end_production9}
             ${start_injection10} ${end_injection10} ${start_production10} ${end_production10}'

#####################################
# Geometry in RZ coordinates
# borehole radius (m)
bh_r = 0.1
# model radius (m)
max_r = 1000
# aquifer thickness (m)
aq_thickness = 20
# cap thickness (m)
cap_thickness = 40
# injection region top and bottom (m).  Note, the mesh is created with the aquifer in y = (-0.5 * aq_thickness, 0.5 * aq_thickness), irrespective of depth (depth only sets the insitu porepressure and temperature)
screen_top = ${fparse 0.5 * aq_thickness}
screen_bottom = ${fparse -0.5 * aq_thickness}

# number of elements in radial direction
num_r = 25
# number of elements across half height of aquifer
num_y_aq = 10
# number of elements across height of cap
num_y_cap = 8

# mesh bias in radial direction
bias_r = 1.22
# mesh bias in vertical direction in aquifer top
bias_y_aq_top = 0.9
# mesh bias in vertical direction in cap top
bias_y_cap_top = 1.3
# mesh bias in vertical direction in aquifer bottom
bias_y_aq_bottom = ${fparse 1.0 / bias_y_aq_top}
# mesh bias in vertical direction in cap bottom
bias_y_cap_bottom = ${fparse 1.0 / bias_y_cap_top}
depth_centre = ${fparse depth + aq_thickness/2}

#####################################
# temperature at ground surface (degC)
temp0 = 20
# Vertical geothermal gradient (K/m).  A positive number means temperature increases downwards.
geothermal_gradient = 20E-3

#####################################
# Gravity
gravity = -9.81

#####################################
half_aq_thickness = ${fparse aq_thickness * 0.5}
half_height = ${fparse half_aq_thickness + cap_thickness}
approx_screen_length = ${fparse screen_top - screen_bottom}

# Thermal radius (note this is not strictly correct, it should use the bulk specific heat
#  capacity as defined below, but it doesn't matter here because this is purely for
#  defining the region of refined mesh)
th_r = ${fparse sqrt(inject_fluid_mass / 1000 * 4.12e6 / (approx_screen_length * 3.1416 * aq_specific_heat_cap * aq_density))}
# radius of fine mesh
fine_r = ${fparse th_r * 2}
bias_r_fine = 1
num_r_fine = ${fparse int(fine_r/1)}

######################################
# aquifer properties
aq_porosity = 0.25
aq_hor_perm = 1E-11 # m^2
aq_ver_perm = 2E-12 # m^2
aq_density = 2650 # kg/m^3
aq_specific_heat_cap = 800 # J/Kg/K
aq_hor_thermal_cond = 3 # W/m/K
aq_ver_thermal_cond = 3 # W/m/K
aq_disp_parallel = 0 # m
aq_disp_perp = 0 # m
# Bulk volumetric heat capacity of aquifer:
aq_vol_cp = ${fparse aq_specific_heat_cap * aq_density * (1 - aq_porosity) + 4180 * 1000 * aq_porosity}
# Thermal radius (correct version using bulk cp):
R_th = ${fparse sqrt(inject_fluid_mass * 4180 / (approx_screen_length * 3.1416 * aq_vol_cp))}
aq_lambda_eff_hor = ${fparse aq_hor_thermal_cond + 0.3 * aq_disp_parallel * R_th * aq_vol_cp / (inject_time * 60 * 60 * 24)}
aq_lambda_eff_ver = ${fparse aq_ver_thermal_cond + 0.3 * aq_disp_perp * R_th * aq_vol_cp / (inject_time * 60 * 60 * 24)}
aq_hor_dry_thermal_cond = ${fparse aq_lambda_eff_hor * 60 * 60 * 24} # J/day/m/K
aq_ver_dry_thermal_cond = ${fparse aq_lambda_eff_ver * 60 * 60 * 24} # J/day/m/K
aq_hor_wet_thermal_cond = ${fparse aq_lambda_eff_hor * 60 * 60 * 24} # J/day/m/K
aq_ver_wet_thermal_cond = ${fparse aq_lambda_eff_ver * 60 * 60 * 24} # J/day/m/K
# cap-rock properties
cap_porosity = 0.25
cap_hor_perm = 1E-16 # m^2
cap_ver_perm = 1E-17 # m^2
cap_density = 2650 # kg/m^3
cap_specific_heat_cap = 800 # J/kg/K
cap_hor_thermal_cond = 3 # W/m/K
cap_ver_thermal_cond = 3 # W/m/K
cap_hor_dry_thermal_cond = ${fparse cap_hor_thermal_cond * 60 * 60 * 24} # J/day/m/K
cap_ver_dry_thermal_cond = ${fparse cap_ver_thermal_cond * 60 * 60 * 24} # J/day/m/K
cap_hor_wet_thermal_cond = ${fparse cap_hor_thermal_cond * 60 * 60 * 24} # J/day/m/K
cap_ver_wet_thermal_cond = ${fparse cap_ver_thermal_cond * 60 * 60 * 24} # J/day/m/K

######################################

[Mesh]
  [aq_top_fine]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r_fine}
    xmin = ${bh_r}
    xmax = ${fine_r}
    bias_x = ${bias_r_fine}
    bias_y = ${bias_y_aq_top}
    ny = ${num_y_aq}
    ymin = 0
    ymax = ${half_aq_thickness}
  []
  [cap_top_fine]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r_fine}
    xmin = ${bh_r}
    xmax = ${fine_r}
    bias_x = ${bias_r_fine}
    bias_y = ${bias_y_cap_top}
    ny = ${num_y_cap}
    ymax = ${half_height}
    ymin = ${half_aq_thickness}
  []
  [aq_and_cap_top_fine]
    type = StitchedMeshGenerator
    inputs = 'aq_top_fine cap_top_fine'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'top bottom'
  []
  [aq_bottom_fine]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r_fine}
    xmin = ${bh_r}
    xmax = ${fine_r}
    bias_x = ${bias_r_fine}
    bias_y = ${bias_y_aq_bottom}
    ny = ${num_y_aq}
    ymax = 0
    ymin = -${half_aq_thickness}
  []
  [cap_bottom_fine]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r_fine}
    xmin = ${bh_r}
    xmax = ${fine_r}
    bias_x = ${bias_r_fine}
    bias_y = ${bias_y_cap_bottom}
    ny = ${num_y_cap}
    ymin = -${half_height}
    ymax = -${half_aq_thickness}
  []
  [aq_and_cap_bottom_fine]
    type = StitchedMeshGenerator
    inputs = 'aq_bottom_fine cap_bottom_fine'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'bottom top'
  []
  [aq_and_cap_fine]
    type = StitchedMeshGenerator
    inputs = 'aq_and_cap_bottom_fine aq_and_cap_top_fine'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'top bottom'
  []

  [aq_top]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r}
    xmin = ${fine_r}
    xmax = ${max_r}
    bias_x = ${bias_r}
    bias_y = ${bias_y_aq_top}
    ny = ${num_y_aq}
    ymin = 0
    ymax = ${half_aq_thickness}
  []
  [cap_top]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r}
    xmin = ${fine_r}
    xmax = ${max_r}
    bias_x = ${bias_r}
    bias_y = ${bias_y_cap_top}
    ny = ${num_y_cap}
    ymax = ${half_height}
    ymin = ${half_aq_thickness}
  []
  [aq_and_cap_top]
    type = StitchedMeshGenerator
    inputs = 'aq_top cap_top'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'top bottom'
  []
  [aq_bottom]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r}
    xmin = ${fine_r}
    xmax = ${max_r}
    bias_x = ${bias_r}
    bias_y = ${bias_y_aq_bottom}
    ny = ${num_y_aq}
    ymax = 0
    ymin = -${half_aq_thickness}
  []
  [cap_bottom]
    type = GeneratedMeshGenerator
    dim = 2
    nx = ${num_r}
    xmin = ${fine_r}
    xmax = ${max_r}
    bias_x = ${bias_r}
    bias_y = ${bias_y_cap_bottom}
    ny = ${num_y_cap}
    ymin = -${half_height}
    ymax = -${half_aq_thickness}
  []
  [aq_and_cap_bottom]
    type = StitchedMeshGenerator
    inputs = 'aq_bottom cap_bottom'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'bottom top'
  []
  [aq_and_cap]
    type = StitchedMeshGenerator
    inputs = 'aq_and_cap_bottom aq_and_cap_top'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'top bottom'
  []

  [aq_and_cap_all]
    type = StitchedMeshGenerator
    inputs = 'aq_and_cap_fine aq_and_cap'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'right left'
  []

  [aquifer]
    type = ParsedSubdomainMeshGenerator
    input = aq_and_cap_all
    combinatorial_geometry = 'y >= -${half_aq_thickness} & y <= ${half_aq_thickness}'
    block_id = 1
  []
  [top_cap]
    type = ParsedSubdomainMeshGenerator
    input = aquifer
    combinatorial_geometry = 'y >= ${half_aq_thickness}'
    block_id = 2
  []
  [bottom_cap]
    type = ParsedSubdomainMeshGenerator
    input = top_cap
    combinatorial_geometry = 'y <= -${half_aq_thickness}'
    block_id = 3
  []
  [injection_area]
    type = ParsedGenerateSideset
    combinatorial_geometry = 'x<=${bh_r}*1.000001 & y >= ${screen_bottom} & y <= ${screen_top}'
    included_subdomain_ids = 1
    new_sideset_name = 'injection_area'
    input = 'bottom_cap'
  []
  [rename]
    type = RenameBlockGenerator
    old_block_id = '1 2 3'
    new_block_name = 'aquifer caps caps'
    input = 'injection_area'
  []
[]

[Problem]
  coord_type = RZ
[]

[GlobalParams]
  PorousFlowDictator = dictator
  gravity = '0 ${gravity} 0'
[]

[Variables]
  [porepressure]
  []
  [temperature]
    scaling = 1E-5
  []
[]

[PorousFlowFullySaturated]
  coupling_type = ThermoHydro
  porepressure = porepressure
  temperature = temperature
  fp = tabulated_water
  stabilization = KT
  flux_limiter_type = ${flux_limiter}
  use_displaced_mesh = false
  temperature_unit = Celsius
  pressure_unit = Pa
  time_unit = days
[]

[ICs]
  [porepressure]
    type = FunctionIC
    variable = porepressure
    function = insitu_pressure
  []
  [temperature]
    type = FunctionIC
    variable = temperature
    function = insitu_temperature
  []
[]

[BCs]
  [outer_boundary_porepressure]
    type = FunctionDirichletBC
    preset = true
    variable = porepressure
    function = insitu_pressure
    boundary = 'bottom right top'
  []
  [outer_boundary_temperature]
    type = FunctionDirichletBC
    preset = true
    variable = temperature
    function = insitu_temperature
    boundary = 'bottom right top'
  []
  [inject_heat]
    type = FunctionDirichletBC
    variable = temperature
    function = ${inject_temp}
    boundary = 'injection_area'
  []
  [inject_fluid]
    type = PorousFlowSink
    variable = porepressure
    boundary = injection_area
    flux_function = injection_rate_value
  []
  [produce_heat]
    type = PorousFlowSink
    variable = temperature
    boundary = injection_area
    flux_function = production_rate_value
    fluid_phase = 0
    use_enthalpy = true
    save_in = heat_flux_out
  []
  [produce_fluid]
    type = PorousFlowSink
    variable = porepressure
    boundary = injection_area
    flux_function = production_rate_value
  []
[]

[Controls]
  [inject_on]
    type = ConditionalFunctionEnableControl
    enable_objects = 'BCs::inject_heat BCs::inject_fluid'
    conditional_function = inject
    implicit = false
    execute_on = 'initial timestep_begin'
  []
  [produce_on]
    type = ConditionalFunctionEnableControl
    enable_objects = 'BCs::produce_heat BCs::produce_fluid'
    conditional_function = produce
    implicit = false
    execute_on = 'initial timestep_begin'
  []
[]

[Functions]
  [insitu_pressure]
    type = ParsedFunction
    value = '(y - ${depth_centre}) * 1000 * ${gravity} + 1E5'  # approx insitu pressure in Pa
  []
  [insitu_temperature]
    type = ParsedFunction
    value = '${temp0} + (${depth_centre} - y) * ${geothermal_gradient}'
  []

  [inject]
    type = ParsedFunction
    value = 'if(t >= ${start_injection1} & t < ${end_injection1}, 1,
             if(t >= ${start_injection2} & t < ${end_injection2}, 1,
             if(t >= ${start_injection3} & t < ${end_injection3}, 1,
             if(t >= ${start_injection4} & t < ${end_injection4}, 1,
             if(t >= ${start_injection5} & t < ${end_injection5}, 1,
             if(t >= ${start_injection6} & t < ${end_injection6}, 1,
             if(t >= ${start_injection7} & t < ${end_injection7}, 1,
             if(t >= ${start_injection8} & t < ${end_injection8}, 1,
             if(t >= ${start_injection9} & t < ${end_injection9}, 1,
             if(t >= ${start_injection10} & t < ${end_injection10}, 1, 0))))))))))'
  []
  [produce]
    type = ParsedFunction
    value = 'if(t >= ${start_production1} & t < ${end_production1}, 1,
             if(t >= ${start_production2} & t < ${end_production2}, 1,
             if(t >= ${start_production3} & t < ${end_production3}, 1,
             if(t >= ${start_production4} & t < ${end_production4}, 1,
             if(t >= ${start_production5} & t < ${end_production5}, 1,
             if(t >= ${start_production6} & t < ${end_production6}, 1,
             if(t >= ${start_production7} & t < ${end_production7}, 1,
             if(t >= ${start_production8} & t < ${end_production8}, 1,
             if(t >= ${start_production9} & t < ${end_production9}, 1,
             if(t >= ${start_production10} & t < ${end_production10}, 1, 0))))))))))'
  []

  [injection_rate_value]
    type = ParsedFunction
    vars = true_screen_area
    vals = true_screen_area
    value = '-${inject_fluid_mass}/(true_screen_area * ${inject_time})'
  []
  [production_rate_value]
    type = ParsedFunction
    vars = true_screen_area
    vals = true_screen_area
    value = '${produce_fluid_mass}/(true_screen_area * ${produce_time})'
  []

  [heat_out_in_timestep]
    type = ParsedFunction
    vars = 'dt heat_out'
    vals = 'dt heat_out_fromBC'
    value = 'dt*heat_out'
  []
  [produced_T_time_integrated]
    type = ParsedFunction
    vars = 'dt produced_T'
    vals = 'dt produced_T'
    value = 'dt*produced_T / ${produce_time}'
  []
[]

[AuxVariables]
  [density]
    family = MONOMIAL
    order = CONSTANT
  []
  [porosity]
    family = MONOMIAL
    order = CONSTANT
  []
  [heat_flux_out]
    outputs = none
  []
[]

[AuxKernels]
  [density]
    type = PorousFlowPropertyAux
    variable = density
    property = density
  []
  [porosity]
    type = PorousFlowPropertyAux
    variable = porosity
    property = porosity
  []
[]

[Modules]
  [FluidProperties]
    [true_water]
      type = Water97FluidProperties
    []
    [tabulated_water]
      type = TabulatedFluidProperties
      fp = true_water
      temperature_min = 275 # K
      temperature_max = 600
      interpolated_properties = 'density viscosity enthalpy internal_energy'
      fluid_property_file = water97_tabulated_modified.csv
    []
  []
[]

[Materials]
  [porosity_aq]
    type = PorousFlowPorosityConst
    porosity = ${aq_porosity}
    block = aquifer
  []
  [porosity_caps]
    type = PorousFlowPorosityConst
    porosity = ${cap_porosity}
    block = caps
  []

  [permeability_aquifer]
    type = PorousFlowPermeabilityConst
    block = aquifer
    permeability = '${aq_hor_perm} 0 0   0 ${aq_ver_perm} 0   0 0 0'
  []
  [permeability_caps]
    type = PorousFlowPermeabilityConst
    block = caps
    permeability = '${cap_hor_perm} 0 0   0 ${cap_ver_perm} 0   0 0 0'
  []

  [aq_internal_energy]
    type = PorousFlowMatrixInternalEnergy
    block = aquifer
    density = ${aq_density}
    specific_heat_capacity = ${aq_specific_heat_cap}
  []
  [caps_internal_energy]
    type = PorousFlowMatrixInternalEnergy
    block = caps
    density = ${cap_density}
    specific_heat_capacity = ${cap_specific_heat_cap}
  []

  [aq_thermal_conductivity]
    type = PorousFlowThermalConductivityIdeal
    block = aquifer
    dry_thermal_conductivity = '${aq_hor_dry_thermal_cond} 0 0  0 ${aq_ver_dry_thermal_cond} 0  0 0 0'
    wet_thermal_conductivity = '${aq_hor_wet_thermal_cond} 0 0  0 ${aq_ver_wet_thermal_cond} 0  0 0 0'
  []
  [caps_thermal_conductivity]
    type = PorousFlowThermalConductivityIdeal
    block = caps
    dry_thermal_conductivity = '${cap_hor_dry_thermal_cond} 0 0  0 ${cap_ver_dry_thermal_cond} 0  0 0 0'
    wet_thermal_conductivity = '${cap_hor_wet_thermal_cond} 0 0  0 ${cap_ver_wet_thermal_cond} 0  0 0 0'
  []
[]

[Postprocessors]
  [true_screen_area] # this accounts for meshes that do not match screen_top and screen_bottom exactly
    type = AreaPostprocessor
    boundary = injection_area
    execute_on = 'initial'
    outputs = 'none'
  []
  [dt]
    type = TimestepSize
  []

  [heat_out_fromBC]
    type = NodalSum
    variable = heat_flux_out
    boundary = injection_area
    execute_on = 'initial timestep_end'
    outputs = 'none'
  []
  [heat_out_per_timestep]
    type = FunctionValuePostprocessor
    function = heat_out_in_timestep
    execute_on = 'timestep_end'
    outputs = 'none'
  []
  [heat_out_cumulative]
    type = CumulativeValuePostprocessor
    postprocessor = heat_out_per_timestep
    execute_on = 'timestep_end'
    outputs = 'csv console'
  []
  [produced_T]
    type = SideAverageValue
    boundary = injection_area
    variable = temperature
    execute_on = 'initial timestep_end'
    outputs = 'csv console'
  []
  [produced_T_time_integrated]
    type = FunctionValuePostprocessor
    function = produced_T_time_integrated
    execute_on = 'timestep_end'
    outputs = 'none'
  []
  [produced_T_cumulative]
    type = CumulativeValuePostprocessor
    postprocessor = produced_T_time_integrated
    execute_on = 'timestep_end'
    outputs = 'csv console'
  []
[]

[Preconditioning]
  [basic]
    type = SMP
    full = true
    petsc_options = '-ksp_diagonal_scale -ksp_diagonal_scale_fix'
    petsc_options_iname = '-pc_type -sub_pc_type -sub_pc_factor_shift_type -pc_asm_overlap'
    petsc_options_value = ' asm      lu           NONZERO                   2'
  []
[]

[Executioner]
  type = Transient
  solve_type = Newton
  end_time = ${end_simulation}
  timestep_tolerance = 1e-5

  [TimeStepper]
    type = IterationAdaptiveDT
    dt = 1e-3
    growth_factor = 2
  []

  dtmax = 1
  dtmin = 1e-5
  # rough calc for fluid, |R| ~ V*k*1E6 ~ V*1E-5
  # rough calc for heat, |R| ~ V*(lam*1E-3 + h*1E-5)  ~ V*(1E3 + 1E-2)
  # so scale heat by 1E-7 and go for nl_abs_tol = 1E-4, which should give a max error of
  # ~1Pa and ~0.1K in the first metre around the borehole
  nl_abs_tol = 1E-4
  nl_rel_tol = 1E-5
[]

[Outputs]
  sync_times = ${synctimes}
  [ex]
    type = Exodus
    interval = 20
  []
  [csv]
    type = CSV
    execute_postprocessors_on = 'initial timestep_end'
  []
[]

(test/tests/meshgenerators/stitched_mesh_generator/stitched_mesh_generator2.i)

[Mesh]
  [./fmg_left]
    type = FileMeshGenerator
    file = left.e
  []

  [./fmg_center]
    type = FileMeshGenerator
    file = center.e
  []

  [./fmg_right]
    type = FileMeshGenerator
    file = right.e
  []

  [./smg]
    type = StitchedMeshGenerator
    inputs = 'fmg_left fmg_center fmg_right'
    clear_stitched_boundary_ids = true
    stitch_boundaries_pairs = 'right left;
                               right left'
  []
[]

[Variables]
  [./u]
  [../]
[]

[Kernels]
  [./diff]
    type = Diffusion
    variable = u
  [../]
[]

[BCs]
  [./left]
    type = DirichletBC
    variable = u
    boundary = left
    value = 0
  [../]
  [./right]
    type = DirichletBC
    variable = u
    boundary = right
    value = 1
  [../]
[]

[Executioner]
  type = Steady

  solve_type = 'PJFNK'

  petsc_options_iname = '-pc_type -pc_hypre_type'
  petsc_options_value = 'hypre boomeramg'
[]

[Outputs]
  exodus = true
[]

(test/include/meshgenerators/TestSubgenerators.h)

// This file is part of the MOOSE framework
// https://www.mooseframework.org
//
// All rights reserved, see COPYRIGHT for full restrictions
// https://github.com/idaholab/moose/blob/master/COPYRIGHT
//
// Licensed under LGPL 2.1, please see LICENSE for details
// https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

#include "StitchedMeshGenerator.h"

/**
 * Allows multiple mesh files to be "stitched" together to form a single mesh.
 */
class TestSubgenerators : public StitchedMeshGenerator
{
public:
  static InputParameters validParams();

  TestSubgenerators(const InputParameters & parameters);

protected:
  /// The mesh generator input filenames to read
  const std::vector<std::string> & _input_filenames;
};

Example
Input Parameters
Input Files
Child Objects

Install MOOSE

New Users

Examples and Tutorials

Application Usage

Physics and Syntax

Application Development

Framework Development

MOOSEDocs

Infrastructure

Questions

Information and Tools

INL Applications and Remote Access