PostprocessorCoupledInflowBC

Postprocessor inflow for convection on Navier-Stokes velocity variables

Overview

This object adds the inflow boundary condition for the delayed neutron precursor equation if CoupledScalarAdvection is used (i.e. integration by parts and divergence theorem). The weak form for this boundary condition is:

var element = document.getElementById("moose-equation-2b8884f8-bdf9-4704-acb1-04f29b673455");katex.render("\\int_{\\partial V} \\psi C_{inlet} \\vec{u}\\cdot\\hat{n}\\ dS", element, {displayMode:true,throwOnError:false});

where $var element = document.getElementById("moose-equation-4c885093-1be2-4f80-a16d-51b4497a3e8d");katex.render("C_{inlet}", element, {displayMode:false,throwOnError:false});$ is the precursor concentration at the inlet and defined by the postprocessor input parameter.

Example Input File Syntax

Input Parameters

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
postprocessorThe postprocessor from which to derive the inlet concentration.
C++ Type:PostprocessorName
Controllable:No
Description:The postprocessor from which to derive the inlet concentration.
uvelx direction velocity
C++ Type:std::vector<VariableName>
Controllable:No
Description:x direction velocity
variableThe name of the variable that this residual object operates on
C++ Type:NonlinearVariableName
Controllable:No
Description:The name of the variable that this residual object operates on

Required Parameters

displacementsThe displacements
C++ Type:std::vector<VariableName>
Controllable:No
Description:The displacements
offset0The amount to offset the scaled postprocessor by
Default:0
C++ Type:double
Controllable:No
Description:The amount to offset the scaled postprocessor by
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
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.
scale1The amount to scale the postprocessor value by
Default:1
C++ Type:double
Controllable:No
Description:The amount to scale the postprocessor value by
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.
vvely direction velocity
C++ Type:std::vector<VariableName>
Controllable:No
Description:y direction velocity
wvelz direction velocity
C++ Type:std::vector<VariableName>
Controllable:No
Description:z direction velocity

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

Tagging 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>
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>
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.)
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
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

Input Files

(tests/bcs/coupled_bc_test.i)

(tests/bcs/coupled_bc_test.i)

[Mesh]
  [box]
    type = GeneratedMeshGenerator
    dim = 2
    nx = 20
    ny = 20
    xmin = 0
    xmax = 1
    ymin = 0
    ymax = 1
  []
[]

[Variables]
  [u]
    order = CONSTANT
    family = MONOMIAL
  []
[]

[AuxVariables]
  [v]
    order = FIRST
    family = LAGRANGE
  []
[]

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

[DGKernels]
  [dg_advection]
    type = DGCoupledAdvection
    variable = u
    uvel = 0
    vvel = v
  []
[]

[AuxKernels]
  [v_aux]
    type = FunctionAux
    variable = v
    function = vel_func
  []
[]

[BCs]
  [u_inlet]
    type = PostprocessorCoupledInflowBC
    variable = u
    boundary = 'bottom'
    postprocessor = 1
    uvel = 0
    vvel = v
  []
  [u_outlet]
    type = CoupledOutflowBC
    variable = u
    boundary = 'top'
    uvel = 0
    vvel = v
  []
[]

[Functions]
  # Parabolic, upward flow
  [vel_func]
    type = ParsedFunction
    expression = '-(x - 0) * (x - 1)'
  []
[]

[Executioner]
  type = Steady
  solve_type = 'PJFNK'
[]

[Outputs]
  [out]
    type = Exodus
  []
[]

Overview
Example Input File Syntax
Input Parameters
Input Files