HeatPrecursorSource

Overview

This object adds the $var element = document.getElementById("moose-equation-b9444afc-b0be-4503-b635-522fef13f64b");katex.render("f_j\\lambda_j\\sum^G_{g=1} \\epsilon_g\\Sigma^f_g\\phi_g", element, {displayMode:false,throwOnError:false});$ source term of the decay heat equation where $var element = document.getElementById("moose-equation-f8272e45-b3ad-4331-8454-a34a27eebd64");katex.render("f_j", element, {displayMode:false,throwOnError:false});$ is the fraction of total power attributable to decay heat group $var element = document.getElementById("moose-equation-f2a79d5f-01db-44b6-b87f-5aae61e02657");katex.render("j", element, {displayMode:false,throwOnError:false});$ .

Example Input File Syntax

Input Parameters

decay_heat_constantsDecay Heat Constants
C++ Type:std::vector<double>
Unit:(no unit assumed)
Controllable:No
Description:Decay Heat Constants
decay_heat_fractionsDecay Heat Fractions
C++ Type:std::vector<double>
Unit:(no unit assumed)
Controllable:No
Description:Decay Heat Fractions
decay_heat_group_numberThe decay heat group this kernel acts on.
C++ Type:unsigned int
Unit:(no unit assumed)
Controllable:No
Description:The decay heat group this kernel acts on.
group_fluxesAll the variables that hold the group fluxes. These MUST be listed by decreasing energy/increasing group number.
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:All the variables that hold the group fluxes. These MUST be listed by decreasing energy/increasing group number.
num_groupsThe total number of energy groups
C++ Type:unsigned int
Unit:(no unit assumed)
Controllable:No
Description:The total number of energy groups
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

Required Parameters

blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Unit:(no unit assumed)
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
displacementsThe displacements
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The displacements
nt_scale1Scaling of the neutron fluxes to aid convergence.
Default:1
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Scaling of the neutron fluxes to aid convergence.
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.
temperature800.0The temperature used to interpolate material properties.
Default:800.0
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The temperature used to interpolate material properties.
use_exp_formFalseWhether concentrations should be in an expotential/logarithmic format.
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Whether concentrations should be in an expotential/logarithmic format.
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
Unit:(no unit assumed)
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.

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>
Unit:(no unit assumed)
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>
Unit:(no unit assumed)
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>
Unit:(no unit assumed)
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
Unit:(no unit assumed)
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
Unit:(no unit assumed)
Options:nontime, time
Controllable:No
Description:The tag for the vectors this Kernel should fill

Tagging Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
diag_save_inThe name of auxiliary variables to save this Kernel'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 Kernel'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
Unit:(no unit assumed)
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
Unit:(no unit assumed)
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
save_inThe name of auxiliary variables to save this Kernel'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 Kernel's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Unit:(no unit assumed)
Controllable:No
Description:The seed for the master random number generator
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
Unit:(no unit assumed)
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

Input Files

(tests/decay_heat/decay_heat.i)

(tests/decay_heat/decay_heat.i)

flow_velocity = 21.7 # cm/s. See MSRE-properties.ods
global_temperature = 922

[GlobalParams]
  num_groups = 2
  num_precursor_groups = 6
  group_fluxes = '1e9 1e9'
  use_exp_form = false
  decay_heat_fractions = '.01 .01 .01'
  decay_heat_constants = '1 .1 .01'
  temperature = ${global_temperature}
  sss2_input = false
[]

[Mesh]
  coord_type = RZ
  file = '2d_lattice_structured_smaller.msh'
[]

[Problem]
  kernel_coverage_check = false
[]

[Variables]
  [heat1]
    order = CONSTANT
    family = MONOMIAL
    block = 'fuel'
  []
  [heat2]
    order = CONSTANT
    family = MONOMIAL
    block = 'fuel'
  []
  [heat3]
    order = CONSTANT
    family = MONOMIAL
    block = 'fuel'
  []
[]

[Kernels]
  [decay_heat1_source]
    type = HeatPrecursorSource
    variable = heat1
    decay_heat_group_number = 1
    block = 'fuel'
  []
  [decay_heat1_decay]
    type = HeatPrecursorDecay
    variable = heat1
    decay_heat_group_number = 1
    block = 'fuel'
  []
  [decay_heat2_source]
    type = HeatPrecursorSource
    variable = heat2
    decay_heat_group_number = 2
    block = 'fuel'
  []
  [decay_heat2_decay]
    type = HeatPrecursorDecay
    variable = heat2
    decay_heat_group_number = 2
    block = 'fuel'
  []
  [decay_heat3_source]
    type = HeatPrecursorSource
    variable = heat3
    decay_heat_group_number = 3
    block = 'fuel'
  []
  [decay_heat3_decay]
    type = HeatPrecursorDecay
    variable = heat3
    decay_heat_group_number = 3
    block = 'fuel'
  []
[]

[DGKernels]
  [decay_heat1_convection]
    type = DGConvection
    variable = heat1
    velocity = '0 ${flow_velocity} 0'
    block = 'fuel'
  []
  [decay_heat2_convection]
    type = DGConvection
    variable = heat2
    velocity = '0 ${flow_velocity} 0'
    block = 'fuel'
  []
  [decay_heat3_convection]
    type = DGConvection
    variable = heat3
    velocity = '0 ${flow_velocity} 0'
    block = 'fuel'
  []
[]

[BCs]
  [decay_heat1_outflow]
    type = OutflowBC
    variable = heat1
    velocity = '0 ${flow_velocity} 0'
    boundary = 'fuel_tops'
  []
  [decay_heat2_outflow]
    type = OutflowBC
    variable = heat2
    velocity = '0 ${flow_velocity} 0'
    boundary = 'fuel_tops'
  []
  [decay_heat3_outflow]
    type = OutflowBC
    variable = heat3
    velocity = '0 ${flow_velocity} 0'
    boundary = 'fuel_tops'
  []
[]

[Materials]
  [fuel]
    type = GenericMoltresMaterial
    property_tables_root = '../../property_file_dir/newt_msre_fuel_'
    interp_type = 'spline'
  []
[]

[Executioner]
  type = Steady

  nl_rel_tol = 1e-6
  nl_abs_tol = 1e-5

  solve_type = 'NEWTON'
  petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_linesearch_monitor'
  petsc_options_iname = '-pc_type -sub_pc_type -pc_asm_overlap -sub_ksp_type -snes_linesearch_minlambda'
  petsc_options_value = 'asm      lu           1               preonly       1e-3'

  nl_max_its = 30
  l_max_its = 100
[]

[Preconditioning]
  [SMP]
    type = SMP
    full = true
  []
[]

[Outputs]
  perf_graph = true
  print_linear_residuals = true
  csv = true
  [out]
    type = Exodus
  []
[]

[Debug]
  show_var_residual_norms = true
[]

Overview
Example Input File Syntax
Input Parameters
Input Files