- powerTotal power [W]
C++ Type:double
Controllable:Yes
Description:Total power [W]
TotalPower
This component is a power component that specifies the power as a constant value via a user parameter.
Usage
The user provides a power value via the parameter "power". This parameter may be controlled via the ControlLogic system.
Input 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.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:No
Description:Set the enabled status of the MooseObject.
Advanced Parameters
Variables
This component creates the following auxiliary scalar variable, where <cname> is the name of the component:
| Variable | Description |
|---|---|
<cname>:power | Power [W] |
Input Files
- (modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/err.base.i)
- (modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz_mats.i)
- (modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_2nd_order_with_trap.i)
- (modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/phy.cylinder_power_shape_aux_var.i)
- (modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i)
- (modules/thermal_hydraulics/test/tests/components/total_power/phy.constant_power.i)
- (modules/thermal_hydraulics/tutorials/single_phase_flow/02_core.i)
- (modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i)
- (modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i)
- (modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.energy_heatstructure_ss_1phase.i)
- (modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.cylinder_power_shape_fn.i)
- (modules/thermal_hydraulics/test/tests/components/heat_source_volumetric_1phase/err.base.i)
- (modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.plate.i)
- (modules/thermal_hydraulics/test/tests/components/total_power/clg.power.i)
- (modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation.i)
- (modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz.i)
- (modules/thermal_hydraulics/tutorials/single_phase_flow/03_upper_loop.i)
- (modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation_from_file_3d.i)
- (modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_T_ic.i)
- (modules/thermal_hydraulics/test/tests/components/heat_structure_base/2nd_order.i)
power
C++ Type:double
Controllable:Yes
Description:Total power [W]
(modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/err.base.i)
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 2.5
cp = 300.
rho = 1.032e4
[]
[]
[Components]
[reactor]
type = TotalPower
power = 10
[]
[hs]
type = HeatStructureCylindrical
position = '0 -0.024748 0'
orientation = '0 0 1'
length = 3.865
n_elems = 1
names = 'fuel'
widths = '0.004096'
n_part_elems = '1'
materials = 'fuel-mat'
initial_T = 559.15
[]
[hgen]
type = HeatSourceFromTotalPower
power_fraction = 1
[]
[]
[Executioner]
type = Transient
dt = 1.e-2
[]
(modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz_mats.i)
# Tests that cylindrical heat structure geometry can be used with Materials block
[Functions]
[power_profile_fn]
type = ParsedFunction
value = '1.570796326794897 * sin(x / 3.6576 * pi)'
[]
[]
[Materials]
[fuel-mat]
type = ADGenericConstantMaterial
block = hs:FUEL
prop_names = 'thermal_conductivity specific_heat density'
prop_values = '3.65 288.734 1.0412e2'
[]
[gap-mat]
type = ADGenericConstantMaterial
block = hs:GAP
prop_names = 'thermal_conductivity specific_heat density'
prop_values = '1.084498 1.0 1.0'
[]
[clad-mat]
type = ADGenericConstantMaterial
block = hs:CLAD
prop_names = 'thermal_conductivity specific_heat density'
prop_values = '16.48672 321.384 6.6e1'
[]
[]
[Components]
[reactor]
type = TotalPower
power = 296153.84615384615385
[]
[hs]
type = HeatStructureCylindrical
position = '0 0 1'
orientation = '1 0 0'
length = 3.6576
n_elems = 20
names = 'FUEL GAP CLAD'
widths = '0.0046955 0.0000955 0.000673'
n_part_elems = '3 1 1'
initial_T = 564.15
[]
[hg]
type = HeatSourceFromTotalPower
hs = hs
regions = 'FUEL'
power_fraction = 3.33672612e-1
power = reactor
power_shape_function = power_profile_fn
[]
[temp_outside]
type = HSBoundarySpecifiedTemperature
hs = hs
boundary = hs:outer
T = 600
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 2
num_steps = 10
abort_on_solve_fail = true
solve_type = 'NEWTON'
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
nl_max_its = 30
l_tol = 1e-4
l_max_its = 300
[]
[Outputs]
exodus = true
[console]
type = Console
execute_scalars_on = none
[]
[]
(modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_2nd_order_with_trap.i)
[GlobalParams]
initial_p = 15.17e6
initial_vel = 1.
initial_T = 564.15
2nd_order_mesh = true
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 3.65
cp = 288.734
rho = 1.0412e2
[]
[gap-mat]
type = SolidMaterialProperties
k = 1.084498
cp = 1.0
rho = 1.0
[]
[clad-mat]
type = SolidMaterialProperties
k = 16.48672
cp = 321.384
rho = 6.6e1
[]
[]
[Components]
[reactor]
type = TotalPower
power = 296153.84615384615385
[]
[hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '1 0 0'
length = 1
n_elems = 1
names = 'FUEL GAP CLAD'
widths = '0.0046955 0.0000955 0.000673'
n_part_elems = '1 1 1'
materials = 'fuel-mat gap-mat clad-mat'
initial_T = 564.15
[]
[hg]
type = HeatSourceFromTotalPower
hs = hs
regions = 'FUEL'
power_fraction = 3.33672612e-1
power = reactor
[]
[temp_outside]
type = HSBoundarySpecifiedTemperature
hs = hs
boundary = hs:outer
T = 600
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
dt = 0.1
dtmin = 1e-1
solve_type = 'PJFNK'
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
nl_max_its = 30
l_tol = 1e-4
l_max_its = 300
start_time = 0.0
end_time = 2.0
[Quadrature]
type = TRAP
order = FIRST
[]
[]
(modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/phy.cylinder_power_shape_aux_var.i)
[GlobalParams]
scaling_factor_temperature = 1e1
[]
[Functions]
[HeatFunction]
type = ParsedFunction
value = 1313127093.32191
[]
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 16
cp = 191.67
rho = 1.4583e4
[]
[gap-mat]
type = SolidMaterialProperties
k = 64
cp = 1272
rho = 865
[]
[clad-mat]
type = SolidMaterialProperties
k = 26
cp = 638
rho = 7.646e3
[]
[]
[AuxVariables]
[power_density]
family = MONOMIAL
order = CONSTANT
block = 'CH1:solid:fuel'
[]
[]
[AuxKernels]
[mock_power_aux]
type = FunctionAux
variable = power_density
function = HeatFunction
block = 'CH1:solid:fuel'
[]
[]
[Components]
[total_power]
type = TotalPower
power = 3.0e4
[]
[CH1:solid]
type = HeatStructureCylindrical
position = '0 -0.024 0'
orientation = '0 0 1'
length = 0.8
n_elems = 16
initial_T = 628.15
names = 'fuel gap clad'
widths = '0.003015 0.000465 0.00052'
n_part_elems = '20 2 2'
materials = 'fuel-mat gap-mat clad-mat'
[]
[CH1:hgen]
type = HeatSourceFromPowerDensity
hs = CH1:solid
regions = 'fuel'
power_density = power_density
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 1e-3
num_steps = 1
abort_on_solve_fail = true
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-7
nl_max_its = 40
l_tol = 1e-5
l_max_its = 50
[]
[Outputs]
[out]
type = Exodus
[]
[]
(modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
# pipe parameters
pipe_dia = ${units 10. cm -> m}
tot_power = 100 # W
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
rdg_slope_reconstruction = full
closures = simple_closures
fp = he
f = 0.4
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${core_dia}
f = 1.6
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
Hw = 1.36
[]
[jct1]
type = JunctionParallelChannels1Phase
position = '0 0 1'
connections = 'core_chan:out up_pipe:in'
volume = 1e-3
[]
[up_pipe]
type = FlowChannel1Phase
position = '0 0 1'
orientation = '0 0 1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct2]
type = VolumeJunction1Phase
position = '0 0 2'
connections = 'up_pipe:out top_pipe:in'
volume = 1e-3
[]
[top_pipe]
type = FlowChannel1Phase
position = '0 0 2'
orientation = '1 0 0'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct3]
type = VolumeJunction1Phase
position = '1 0 2'
connections = 'top_pipe:out cooling_pipe:in'
volume = 1e-3
[]
[cooling_pipe]
type = FlowChannel1Phase
position = '1 0 2'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[cold_wall]
type = HeatTransferFromSpecifiedTemperature1Phase
flow_channel = cooling_pipe
T_wall = 300
Hw = 0.97
[]
[jct4]
type = VolumeJunction1Phase
position = '1 0 1'
connections = 'cooling_pipe:out down_pipe:in'
volume = 1e-3
[]
[down_pipe]
type = FlowChannel1Phase
position = '1 0 1'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct5]
type = VolumeJunction1Phase
position = '1 0 0'
connections = 'down_pipe:out bottom_b:in'
volume = 1e-3
[]
[bottom_b]
type = FlowChannel1Phase
position = '1 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[pump]
type = Pump1Phase
position = '0.5 0 0'
connections = 'bottom_b:out bottom_a:in'
volume = 1e-3
A_ref = ${fparse pi * pipe_dia * pipe_dia / 4.}
head = 0
[]
[bottom_a]
type = FlowChannel1Phase
position = '0.5 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct6]
type = VolumeJunction1Phase
position = '0 0 0'
connections = 'bottom_a:out core_chan:in'
volume = 1e-3
[]
[]
[ControlLogic]
[set_point]
type = GetFunctionValueControl
function = ${m_dot_in}
[]
[pid]
type = PIDControl
initial_value = 0
set_point = set_point:value
input = m_dot_pump
K_p = 250
K_i = 0.5
K_d = 0
[]
[set_pump_head]
type = SetComponentRealValueControl
component = pump
parameter = head
value = pid:output
[]
[]
[Postprocessors]
[m_dot_pump]
type = ADFlowJunctionFlux1Phase
boundary = core_chan:in
connection_index = 1
equation = mass
junction = jct6
[]
[core_T_out]
type = SideAverageValue
boundary = core_chan:out
variable = T
[]
[hx_pri_T_out]
type = SideAverageValue
boundary = cooling_pipe:out
variable = T
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 1000
dt = 10
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/test/tests/components/total_power/phy.constant_power.i)
[HeatStructureMaterials]
[mat]
type = SolidMaterialProperties
k = 1
cp = 1
rho = 1
[]
[]
[Components]
[total_power]
type = TotalPower
power = 1234.
[]
[ch1:solid]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '1 0 0'
length = 1
n_elems = 1
initial_T = 300
names = '0'
widths = '1'
n_part_elems = '1'
materials = 'mat'
[]
[]
[Postprocessors]
[reactor_power]
type = RealComponentParameterValuePostprocessor
component = total_power
parameter = power
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
dt = 1
abort_on_solve_fail = true
solve_type = 'PJFNK'
line_search = 'basic'
nl_rel_tol = 1e-12
nl_abs_tol = 1e-6
nl_max_its = 10
l_tol = 1e-3
l_max_its = 300
start_time = 0.0
end_time = 10
[]
[Outputs]
csv = true
show = 'reactor_power'
[]
(modules/thermal_hydraulics/tutorials/single_phase_flow/02_core.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
tot_power = 100 # W
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
rdg_slope_reconstruction = full
closures = simple_closures
fp = he
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[inlet]
type = InletMassFlowRateTemperature1Phase
input = 'core_chan:in'
m_dot = ${m_dot_in}
T = ${T_in}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${fparse (4 * core_pitch * core_pitch - pi * core_dia * core_dia) / (4 * core_pitch + pi * core_dia)}
f = 1.6
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
Hw = 1.36
[]
[outlet]
type = Outlet1Phase
input = 'core_chan:out'
p = ${press}
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 1000
dt = 10
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
# pipe parameters
pipe_dia = ${units 10. cm -> m}
tot_power = 100 # W
# heat exchanger parameters
hx_dia_inner = ${units 10. cm -> m}
hx_wall_thickness = ${units 5. mm -> m}
hx_dia_outer = ${units 50. cm -> m}
hx_radius_wall = ${fparse hx_dia_inner / 2. + hx_wall_thickness}
hx_length = 1 # m
hx_n_elems = 10
m_dot_sec_in = 1 # kg/s
flow_blocks = 'core_chan up_pipe top_pipe hx/pri hx/sec down_pipe bottom_b bottom_a'
ht_blocks = 'core_chan hx/pri hx/sec'
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
rdg_slope_reconstruction = full
closures = no_closures
fp = he
[]
[Functions]
[m_dot_sec_fn]
type = PiecewiseLinear
xy_data = '
0 0
100 ${m_dot_sec_in}'
[]
[]
[Materials]
[f_mat]
type = ADWallFrictionChurchillMaterial
block = ${flow_blocks}
D_h = D_h
f_D = f_D
mu = mu
rho = rho
vel = vel
[]
[Hw_mat]
type = ADWallHeatTransferCoefficient3EqnDittusBoelterMaterial
block = ${ht_blocks}
D_h = D_h
rho = rho
vel = vel
T = T
T_wall = T_wall
cp = cp
mu = mu
k = k
[]
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[water]
type = StiffenedGasFluidProperties
gamma = 2.35
cv = 1816.0
q = -1.167e6
p_inf = 1.0e9
q_prime = 0
[]
[]
[Closures]
[no_closures]
type = Closures1PhaseNone
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${core_dia}
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
[]
[jct1]
type = JunctionParallelChannels1Phase
position = '0 0 1'
connections = 'core_chan:out up_pipe:in'
volume = 1e-3
[]
[up_pipe]
type = FlowChannel1Phase
position = '0 0 1'
orientation = '0 0 1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct2]
type = VolumeJunction1Phase
position = '0 0 2'
connections = 'up_pipe:out top_pipe:in'
volume = 1e-3
[]
[top_pipe]
type = FlowChannel1Phase
position = '0 0 2'
orientation = '1 0 0'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct3]
type = VolumeJunction1Phase
position = '1 0 2'
connections = 'top_pipe:out hx/pri:in'
volume = 1e-3
[]
[hx]
[pri]
type = FlowChannel1Phase
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * hx_dia_inner * hx_dia_inner / 4.}
D_h = ${hx_dia_inner}
[]
[ht_pri]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = inner
flow_channel = hx/pri
[]
[wall]
type = HeatStructureCylindrical
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
widths = '${hx_wall_thickness}'
n_part_elems = '3'
materials = 'steel'
names = '0'
inner_radius = ${fparse hx_dia_inner / 2.}
[]
[ht_sec]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = outer
flow_channel = hx/sec
P_hf = ${fparse 2 * pi * hx_radius_wall}
[]
[sec]
type = FlowChannel1Phase
position = '${fparse 1 + hx_wall_thickness} 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * (hx_dia_outer * hx_dia_outer / 4. - hx_radius_wall * hx_radius_wall)}
D_h = ${fparse hx_dia_outer - (2 * hx_radius_wall)}
fp = water
[]
[]
[jct4]
type = VolumeJunction1Phase
position = '1 0 1'
connections = 'hx/pri:out down_pipe:in'
volume = 1e-3
[]
[down_pipe]
type = FlowChannel1Phase
position = '1 0 1'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct5]
type = VolumeJunction1Phase
position = '1 0 0'
connections = 'down_pipe:out bottom_b:in'
volume = 1e-3
[]
[bottom_b]
type = FlowChannel1Phase
position = '1 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[pump]
type = Pump1Phase
position = '0.5 0 0'
connections = 'bottom_b:out bottom_a:in'
volume = 1e-3
A_ref = ${fparse pi * pipe_dia * pipe_dia / 4.}
head = 0
[]
[bottom_a]
type = FlowChannel1Phase
position = '0.5 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct6]
type = VolumeJunction1Phase
position = '0 0 0'
connections = 'bottom_a:out core_chan:in'
volume = 1e-3
[]
[inlet_sec]
type = InletMassFlowRateTemperature1Phase
input = 'hx/sec:out'
m_dot = 0
T = 300
[]
[outlet_sec]
type = Outlet1Phase
input = 'hx/sec:in'
p = ${press}
[]
[]
[ControlLogic]
[set_point]
type = GetFunctionValueControl
function = ${m_dot_in}
[]
[pid]
type = PIDControl
initial_value = 0
set_point = set_point:value
input = m_dot_pump
K_p = 250
K_i = 0.5
K_d = 0
[]
[set_pump_head]
type = SetComponentRealValueControl
component = pump
parameter = head
value = pid:output
[]
[m_dot_sec_inlet_ctrl]
type = GetFunctionValueControl
function = m_dot_sec_fn
[]
[set_m_dot_sec_ctrl]
type = SetComponentRealValueControl
component = inlet_sec
parameter = m_dot
value = m_dot_sec_inlet_ctrl:value
[]
[]
[Postprocessors]
[m_dot_pump]
type = ADFlowJunctionFlux1Phase
boundary = core_chan:in
connection_index = 1
equation = mass
junction = jct6
[]
[core_T_out]
type = SideAverageValue
boundary = core_chan:out
variable = T
[]
[hx_pri_T_out]
type = SideAverageValue
boundary = hx/pri:out
variable = T
[]
[hx_sec_T_in]
type = SideAverageValue
boundary = inlet_sec
variable = T
[]
[hx_sec_T_out]
type = SideAverageValue
boundary = outlet_sec
variable = T
[]
[]
[Executioner]
type = Transient
start_time = 0
[TimeStepper]
type = SolutionTimeAdaptiveDT
dt = 1
[]
dtmax = 100
end_time = 50000
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
# pipe parameters
pipe_dia = ${units 10. cm -> m}
tot_power = 100 # W
# heat exchanger parameters
hx_dia_inner = ${units 10. cm -> m}
hx_wall_thickness = ${units 5. mm -> m}
hx_dia_outer = ${units 50. cm -> m}
hx_radius_wall = ${fparse hx_dia_inner / 2. + hx_wall_thickness}
hx_length = 1 # m
hx_n_elems = 10
m_dot_sec_in = 1 # kg/s
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
rdg_slope_reconstruction = full
closures = simple_closures
fp = he
f = 0.4
[]
[Functions]
[m_dot_sec_fn]
type = PiecewiseLinear
xy_data = '
0 0
100 ${m_dot_sec_in}'
[]
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[water]
type = StiffenedGasFluidProperties
gamma = 2.35
cv = 1816.0
q = -1.167e6
p_inf = 1.0e9
q_prime = 0
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${core_dia}
f = 1.6
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
Hw = 1.36
[]
[jct1]
type = JunctionParallelChannels1Phase
position = '0 0 1'
connections = 'core_chan:out up_pipe:in'
volume = 1e-3
[]
[up_pipe]
type = FlowChannel1Phase
position = '0 0 1'
orientation = '0 0 1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct2]
type = VolumeJunction1Phase
position = '0 0 2'
connections = 'up_pipe:out top_pipe:in'
volume = 1e-3
[]
[top_pipe]
type = FlowChannel1Phase
position = '0 0 2'
orientation = '1 0 0'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct3]
type = VolumeJunction1Phase
position = '1 0 2'
connections = 'top_pipe:out hx/pri:in'
volume = 1e-3
[]
[hx]
[pri]
type = FlowChannel1Phase
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * hx_dia_inner * hx_dia_inner / 4.}
D_h = ${hx_dia_inner}
[]
[ht_pri]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = inner
flow_channel = hx/pri
Hw = 0.97
[]
[wall]
type = HeatStructureCylindrical
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
widths = '${hx_wall_thickness}'
n_part_elems = '3'
materials = 'steel'
names = '0'
inner_radius = ${fparse hx_dia_inner / 2.}
[]
[ht_sec]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = outer
flow_channel = hx/sec
P_hf = ${fparse 2 * pi * hx_radius_wall}
Hw = 36
[]
[sec]
type = FlowChannel1Phase
position = '${fparse 1 + hx_wall_thickness} 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * (hx_dia_outer * hx_dia_outer / 4. - hx_radius_wall * hx_radius_wall)}
D_h = ${fparse hx_dia_outer - (2 * hx_radius_wall)}
fp = water
f = 0.075
[]
[]
[jct4]
type = VolumeJunction1Phase
position = '1 0 1'
connections = 'hx/pri:out down_pipe:in'
volume = 1e-3
[]
[down_pipe]
type = FlowChannel1Phase
position = '1 0 1'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct5]
type = VolumeJunction1Phase
position = '1 0 0'
connections = 'down_pipe:out bottom_b:in'
volume = 1e-3
[]
[bottom_b]
type = FlowChannel1Phase
position = '1 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[pump]
type = Pump1Phase
position = '0.5 0 0'
connections = 'bottom_b:out bottom_a:in'
volume = 1e-3
A_ref = ${fparse pi * pipe_dia * pipe_dia / 4.}
head = 0
[]
[bottom_a]
type = FlowChannel1Phase
position = '0.5 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct6]
type = VolumeJunction1Phase
position = '0 0 0'
connections = 'bottom_a:out core_chan:in'
volume = 1e-3
[]
[inlet_sec]
type = InletMassFlowRateTemperature1Phase
input = 'hx/sec:out'
m_dot = 0
T = 300
[]
[outlet_sec]
type = Outlet1Phase
input = 'hx/sec:in'
p = ${press}
[]
[]
[ControlLogic]
[set_point]
type = GetFunctionValueControl
function = ${m_dot_in}
[]
[pid]
type = PIDControl
initial_value = 0
set_point = set_point:value
input = m_dot_pump
K_p = 250
K_i = 0.5
K_d = 0
[]
[set_pump_head]
type = SetComponentRealValueControl
component = pump
parameter = head
value = pid:output
[]
[m_dot_sec_inlet_ctrl]
type = GetFunctionValueControl
function = m_dot_sec_fn
[]
[set_m_dot_sec_ctrl]
type = SetComponentRealValueControl
component = inlet_sec
parameter = m_dot
value = m_dot_sec_inlet_ctrl:value
[]
[]
[Postprocessors]
[m_dot_pump]
type = ADFlowJunctionFlux1Phase
boundary = core_chan:in
connection_index = 1
equation = mass
junction = jct6
[]
[core_T_out]
type = SideAverageValue
boundary = core_chan:out
variable = T
[]
[hx_pri_T_out]
type = SideAverageValue
boundary = hx/pri:out
variable = T
[]
[hx_sec_T_in]
type = SideAverageValue
boundary = inlet_sec
variable = T
[]
[hx_sec_T_out]
type = SideAverageValue
boundary = outlet_sec
variable = T
[]
[]
[Executioner]
type = Transient
start_time = 0
[TimeStepper]
type = SolutionTimeAdaptiveDT
dt = 1
[]
dtmax = 100
end_time = 50000
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.energy_heatstructure_ss_1phase.i)
# This test tests conservation of energy at steady state for 1-phase flow when a
# heat structure is used. Conservation is checked by comparing the integral of
# the heat flux against the difference of the boundary fluxes.
[GlobalParams]
initial_p = 7.0e6
initial_vel = 0
initial_T = 513
gravity_vector = '0.0 0.0 0.0'
scaling_factor_1phase = '1 1 1e-4'
closures = simple_closures
[]
[Modules/FluidProperties]
[eos]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 3.7
cp = 3.e2
rho = 10.42e3
[]
[gap-mat]
type = SolidMaterialProperties
k = 0.7
cp = 5e3
rho = 1.0
[]
[clad-mat]
type = SolidMaterialProperties
k = 16
cp = 356.
rho = 6.551400E+03
[]
[]
[Components]
[reactor]
type = TotalPower
power = 1e3
[]
[core:pipe]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = 3.66
n_elems = 10
A = 1.907720E-04
D_h = 1.698566E-02
f = 0.0
fp = eos
[]
[core:solid]
type = HeatStructureCylindrical
position = '0 -0.0071501 0'
orientation = '0 0 1'
length = 3.66
n_elems = 10
names = 'FUEL GAP CLAD'
widths = '6.057900E-03 1.524000E-04 9.398000E-04'
n_part_elems = '5 1 2'
materials = 'fuel-mat gap-mat clad-mat'
initial_T = 513
[]
[core:hgen]
type = HeatSourceFromTotalPower
hs = core:solid
regions = 'FUEL'
power = reactor
power_fraction = 1
[]
[core:hx]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core:pipe
hs = core:solid
hs_side = outer
Hw = 1.0e4
P_hf = 4.4925e-2
[]
[inlet]
type = InletDensityVelocity1Phase
input = 'core:pipe:in'
rho = 817.382210128610836
vel = 2.4
[]
[outlet]
type = Outlet1Phase
input = 'core:pipe:out'
p = 7e6
[]
[]
[Postprocessors]
[E_in]
type = ADFlowBoundaryFlux1Phase
boundary = inlet
equation = energy
execute_on = 'initial timestep_end'
[]
[E_out]
type = ADFlowBoundaryFlux1Phase
boundary = outlet
equation = energy
execute_on = 'initial timestep_end'
[]
[hf_pipe]
type = ADHeatRateConvection1Phase
block = core:pipe
T_wall = T_wall
T = T
Hw = Hw
P_hf = P_hf
execute_on = 'initial timestep_end'
[]
[E_diff]
type = DifferencePostprocessor
value1 = E_in
value2 = E_out
execute_on = 'initial timestep_end'
[]
[E_conservation]
type = SumPostprocessor
values = 'E_diff hf_pipe'
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
abort_on_solve_fail = true
dt = 5
solve_type = 'NEWTON'
line_search = 'basic'
nl_rel_tol = 1e-8
nl_abs_tol = 1e-8
nl_max_its = 50
l_tol = 1e-3
l_max_its = 60
start_time = 0
end_time = 260
[]
[Outputs]
[out]
type = CSV
execute_on = final
show = 'E_conservation'
[]
[console]
type = Console
show = 'E_conservation'
[]
[]
(modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.cylinder_power_shape_fn.i)
[GlobalParams]
scaling_factor_temperature = 1e0
[]
[Functions]
[psf]
type = ParsedFunction
value = 1
[]
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 16
cp = 191.67
rho = 1.4583e4
[]
[gap-mat]
type = SolidMaterialProperties
k = 64
cp = 1272
rho = 865
[]
[clad-mat]
type = SolidMaterialProperties
k = 26
cp = 638
rho = 7.646e3
[]
[]
[Components]
[reactor]
type = TotalPower
power = 3.0e4
[]
[CH1:solid]
type = HeatStructureCylindrical
position = '0 -0.024 0'
orientation = '0 0 1'
length = 0.8
n_elems = 16
initial_T = 628.15
names = 'fuel gap clad'
widths = '0.003015 0.000465 0.00052'
n_part_elems = '20 2 2'
materials = 'fuel-mat gap-mat clad-mat'
[]
[CH1:hgen]
type = HeatSourceFromTotalPower
hs = CH1:solid
regions = 'fuel'
power = reactor
power_shape_function = psf
power_fraction = 1
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 1e-3
num_steps = 1
abort_on_solve_fail = true
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-7
nl_max_its = 40
l_tol = 1e-5
l_max_its = 50
[]
[Outputs]
[out]
type = Exodus
[]
[]
(modules/thermal_hydraulics/test/tests/components/heat_source_volumetric_1phase/err.base.i)
[Modules/FluidProperties]
[fp]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[Components]
[total_power]
type = TotalPower
power = 1
[]
[fch1]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = 1
n_elems = 2
A = 1
f = 0.1
fp = fp
closures = simple_closures
initial_T = 300
initial_p = 1e05
initial_vel = 0
[]
[hs]
type = HeatSourceVolumetric1Phase
flow_channel = fch1
q = 1
[]
[inlet]
type = InletMassFlowRateTemperature1Phase
input = fch1:in
m_dot = 1
T = 300
[]
[outlet]
type = Outlet1Phase
input = fch1:out
p = 1e-5
[]
[]
[Executioner]
type = Transient
dt = 1.e-2
[]
(modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.plate.i)
[GlobalParams]
scaling_factor_temperature = 1e0
[]
[Functions]
[psf]
type = ParsedFunction
value = 1
[]
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 16
cp = 191.67
rho = 1.4583e4
[]
[gap-mat]
type = SolidMaterialProperties
k = 64
cp = 1272
rho = 865
[]
[clad-mat]
type = SolidMaterialProperties
k = 26
cp = 638
rho = 7.646e3
[]
[]
[Components]
[reactor]
type = TotalPower
power = 3.0e4
[]
[CH1:solid]
type = HeatStructurePlate
position = '0 -0.024 0'
orientation = '0 0 1'
length = 0.8
n_elems = 16
initial_T = 628.15
names = 'fuel gap clad'
widths = '0.003015 0.000465 0.00052'
depth = 1
n_part_elems = '20 2 2'
materials = 'fuel-mat gap-mat clad-mat'
[]
[CH1:hgen]
type = HeatSourceFromTotalPower
hs = CH1:solid
regions = 'fuel'
power = reactor
power_fraction = 1
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 1e-3
num_steps = 1
abort_on_solve_fail = true
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-7
nl_max_its = 40
l_tol = 1e-5
l_max_its = 50
[]
[Outputs]
[out]
type = Exodus
[]
[]
(modules/thermal_hydraulics/test/tests/components/total_power/clg.power.i)
[Functions]
[decayheatcurve]
type = PiecewiseLinear
x = '0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0'
y = '1.0 .8382 .572 .3806 .2792 .2246 .1904 .1672 .1503 .1376 .1275 .1032 .09884
.09209 .0869 .08271 .07922 .07375 .06967'
[]
[dts]
type = PiecewiseLinear
# this matches the decay heat curve function
x = '0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0'
y = '0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.5 0.5 1.0 1.0 1.0 1.0 2.0 2.0 2.0'
[]
[]
[HeatStructureMaterials]
[mat]
type = SolidMaterialProperties
k = 1
cp = 1
rho = 1
[]
[]
[Components]
[total_power]
type = TotalPower
power = 1.
[]
[ch1:solid]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '1 0 0'
length = 1
n_elems = 1
initial_T = 300
names = '0'
widths = '1'
n_part_elems = '1'
materials = 'mat'
[]
[]
[ControlLogic]
[reactor_power_control]
type = TimeFunctionComponentControl
component = total_power
parameter = power
function = decayheatcurve
[]
[]
[Postprocessors]
[reactor_power]
type = RealComponentParameterValuePostprocessor
component = total_power
parameter = power
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
[TimeStepper]
type = FunctionDT
function = dts
[]
abort_on_solve_fail = true
solve_type = 'PJFNK'
line_search = 'basic'
nl_rel_tol = 1e-12
nl_abs_tol = 1e-6
nl_max_its = 10
l_tol = 1e-3
l_max_its = 300
start_time = 0.0
end_time = 10
[]
[Outputs]
csv = true
show = 'reactor_power'
[]
(modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation.i)
# Tests energy conservation for HeatGeneration component when a power component is used
n_units = 5
power = 1e5
power_fraction = 0.3
t = 1
energy_change = ${fparse power_fraction * power * t}
[GlobalParams]
scaling_factor_temperature = 1e-3
[]
[Functions]
[power_shape]
type = ConstantFunction
value = 0.4
[]
[]
[HeatStructureMaterials]
[main-material]
type = SolidMaterialProperties
k = 1e4
cp = 500.0
rho = 100.0
[]
[]
[Components]
[heat_structure]
type = HeatStructureCylindrical
num_rods = ${n_units}
position = '0 1 0'
orientation = '1 0 0'
length = 0.8
n_elems = 100
names = 'rgn1 rgn2 rgn3'
materials = 'main-material main-material main-material'
widths = '0.4 0.1 0.5'
n_part_elems = '2 2 2'
initial_T = 300
[]
[heat_generation]
type = HeatSourceFromTotalPower
hs = heat_structure
regions = 'rgn1 rgn2'
power = total_power
power_fraction = ${power_fraction}
[]
[total_power]
type = TotalPower
power = ${power}
[]
[]
[Postprocessors]
[E_tot]
type = ADHeatStructureEnergyRZ
block = 'heat_structure:rgn1 heat_structure:rgn2 heat_structure:rgn3'
n_units = ${n_units}
execute_on = 'initial timestep_end'
[]
[E_tot_change]
type = ChangeOverTimePostprocessor
change_with_respect_to_initial = true
postprocessor = E_tot
execute_on = 'initial timestep_end'
[]
[E_tot_change_rel_err]
type = RelativeDifferencePostprocessor
value1 = E_tot_change
value2 = ${energy_change}
execute_on = 'initial timestep_end'
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
solve_type = 'NEWTON'
line_search = 'basic'
petsc_options_iname = '-pc_type'
petsc_options_value = ' lu'
nl_rel_tol = 0
nl_abs_tol = 1e-6
nl_max_its = 15
l_tol = 1e-3
l_max_its = 10
start_time = 0.0
dt = ${t}
num_steps = 1
abort_on_solve_fail = true
[Quadrature]
type = GAUSS
order = SECOND
[]
[]
[Outputs]
csv = true
show = 'E_tot_change_rel_err'
execute_on = 'final'
[]
(modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz.i)
# Tests that cylindrical heat structure geometry can be used.
[Functions]
[power_profile_fn]
type = ParsedFunction
value = '1.570796326794897 * sin(x / 3.6576 * pi)'
[]
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 3.65
cp = 288.734
rho = 1.0412e2
[]
[gap-mat]
type = SolidMaterialProperties
k = 1.084498
cp = 1.0
rho = 1.0
[]
[clad-mat]
type = SolidMaterialProperties
k = 16.48672
cp = 321.384
rho = 6.6e1
[]
[]
[Components]
[reactor]
type = TotalPower
power = 296153.84615384615385
[]
[hs]
type = HeatStructureCylindrical
position = '0 0 1'
orientation = '1 0 0'
length = 3.6576
n_elems = 20
names = 'FUEL GAP CLAD'
widths = '0.0046955 0.0000955 0.000673'
n_part_elems = '3 1 1'
materials = 'fuel-mat gap-mat clad-mat'
initial_T = 564.15
[]
[hg]
type = HeatSourceFromTotalPower
hs = hs
regions = 'FUEL'
power_fraction = 3.33672612e-1
power = reactor
power_shape_function = power_profile_fn
[]
[temp_outside]
type = HSBoundarySpecifiedTemperature
hs = hs
boundary = hs:outer
T = 600
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 2
num_steps = 10
abort_on_solve_fail = true
solve_type = 'NEWTON'
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
nl_max_its = 30
l_tol = 1e-4
l_max_its = 300
[]
[Outputs]
[out]
type = Exodus
[]
[console]
type = Console
execute_scalars_on = none
[]
[]
(modules/thermal_hydraulics/tutorials/single_phase_flow/03_upper_loop.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
# pipe parameters
pipe_dia = ${units 10. cm -> m}
tot_power = 100 # W
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
rdg_slope_reconstruction = full
closures = simple_closures
fp = he
f = 0.4
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[inlet]
type = InletMassFlowRateTemperature1Phase
input = 'core_chan:in'
m_dot = ${m_dot_in}
T = ${T_in}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${core_dia}
f = 1.6
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
Hw = 1.36
[]
[jct1]
type = JunctionParallelChannels1Phase
position = '0 0 1'
connections = 'core_chan:out up_pipe:in'
volume = 1e-3
[]
[up_pipe]
type = FlowChannel1Phase
position = '0 0 1'
orientation = '0 0 1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct2]
type = VolumeJunction1Phase
position = '0 0 2'
connections = 'up_pipe:out top_pipe:in'
volume = 1e-3
[]
[top_pipe]
type = FlowChannel1Phase
position = '0 0 2'
orientation = '1 0 0'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct3]
type = VolumeJunction1Phase
position = '1 0 2'
connections = 'top_pipe:out cooling_pipe:in'
volume = 1e-3
[]
[cooling_pipe]
type = FlowChannel1Phase
position = '1 0 2'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[cold_wall]
type = HeatTransferFromSpecifiedTemperature1Phase
flow_channel = cooling_pipe
T_wall = 300
Hw = 0.97
[]
[jct4]
type = VolumeJunction1Phase
position = '1 0 1'
connections = 'cooling_pipe:out down_pipe:in'
volume = 1e-3
[]
[down_pipe]
type = FlowChannel1Phase
position = '1 0 1'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[outlet]
type = Outlet1Phase
input = 'down_pipe:out'
p = ${press}
[]
[]
[Postprocessors]
[core_T_out]
type = SideAverageValue
boundary = core_chan:out
variable = T
[]
[hx_pri_T_out]
type = SideAverageValue
boundary = cooling_pipe:out
variable = T
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 1000
dt = 10
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation_from_file_3d.i)
# Tests energy conservation for HeatStructureFromFile3D in combination with HeatSourceFromTotalPower
power = 1e5
power_fraction = 0.3
t = 1
energy_change = ${fparse power_fraction * power * t}
[Functions]
[power_shape]
type = ConstantFunction
value = 0.4
[]
[]
[Materials]
[mat]
type = ADGenericConstantMaterial
block = 'heat_structure:rgn1 heat_structure:rgn2'
prop_names = 'density specific_heat thermal_conductivity'
prop_values = '100 500 1e4'
[]
[]
[Components]
[heat_structure]
type = HeatStructureFromFile3D
file = box.e
position = '0 0 0'
initial_T = 300
[]
[heat_generation]
type = HeatSourceFromTotalPower
hs = heat_structure
regions = 'rgn1'
power = total_power
power_fraction = ${power_fraction}
[]
[total_power]
type = TotalPower
power = ${power}
[]
[]
[Postprocessors]
[E_tot]
type = ADHeatStructureEnergy3D
block = 'heat_structure:rgn1 heat_structure:rgn2'
execute_on = 'initial timestep_end'
[]
[E_tot_change]
type = ChangeOverTimePostprocessor
change_with_respect_to_initial = true
postprocessor = E_tot
execute_on = 'initial timestep_end'
[]
[E_tot_change_rel_err]
type = RelativeDifferencePostprocessor
value1 = E_tot_change
value2 = ${energy_change}
execute_on = 'initial timestep_end'
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
solve_type = 'PJFNK'
line_search = 'basic'
nl_rel_tol = 0
nl_abs_tol = 1e-6
nl_max_its = 15
l_tol = 1e-3
l_max_its = 10
start_time = 0.0
dt = ${t}
num_steps = 1
abort_on_solve_fail = true
[]
[Outputs]
csv = true
show = 'E_tot_change_rel_err'
execute_on = 'final'
[]
(modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_T_ic.i)
# Tests that error is generated when no initial temperature function is provided
# when not restarting.
[GlobalParams]
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 3.65
cp = 288.734
rho = 1.0412e2
[]
[gap-mat]
type = SolidMaterialProperties
k = 1.084498
cp = 1.0
rho = 1.0
[]
[clad-mat]
type = SolidMaterialProperties
k = 16.48672
cp = 321.384
rho = 6.6e1
[]
[]
[Components]
[reactor]
type = TotalPower
power = 296153.84615384615385
[]
[hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '1 0 0'
length = 1
n_elems = 1
names = 'FUEL GAP CLAD'
widths = '0.0046955 0.0000955 0.000673'
n_part_elems = '1 1 1'
materials = 'fuel-mat gap-mat clad-mat'
[]
[temp_outside]
type = HSBoundarySpecifiedTemperature
hs = hs
boundary = hs:outer
T = 600
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
dt = 0.1
dtmin = 1e-1
solve_type = 'PJFNK'
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
nl_max_its = 30
l_tol = 1e-4
l_max_its = 300
start_time = 0.0
end_time = 2.0
[]
(modules/thermal_hydraulics/test/tests/components/heat_structure_base/2nd_order.i)
# This tests ensures that 2nd-order meshes can be used; it checks for the
# "Solve Converged" string at the end of a time step.
[GlobalParams]
2nd_order_mesh = true
[]
[HeatStructureMaterials]
[fuel-mat]
type = SolidMaterialProperties
k = 3.65
cp = 288.734
rho = 1.0412e2
[]
[gap-mat]
type = SolidMaterialProperties
k = 1.084498
cp = 1.0
rho = 1.0
[]
[clad-mat]
type = SolidMaterialProperties
k = 16.48672
cp = 321.384
rho = 6.6e1
[]
[]
[Components]
[reactor]
type = TotalPower
power = 296153.84615384615385
[]
[hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '1 0 0'
length = 1
n_elems = 1
names = 'FUEL GAP CLAD'
widths = '0.0046955 0.0000955 0.000673'
n_part_elems = '1 1 1'
materials = 'fuel-mat gap-mat clad-mat'
initial_T = 564.15
[]
[hg]
type = HeatSourceFromTotalPower
hs = hs
regions = 'FUEL'
power_fraction = 3.33672612e-1
power = reactor
[]
[temp_outside]
type = HSBoundarySpecifiedTemperature
hs = hs
boundary = hs:outer
T = 600
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 0.1
num_steps = 1
abort_on_solve_fail = true
solve_type = 'PJFNK'
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
nl_max_its = 30
l_tol = 1e-4
l_max_its = 300
[]