VoidTransportMaterial

construction:Undocumented Class

The VoidTransportMaterial has not been documented. The content listed below should be used as a starting point for documenting the class, which includes the typical automatic documentation associated with a MooseObject; however, what is contained is ultimately determined by what is necessary to make the documentation clear for users.

A void material for regions with no neutron interactions. Provides the neutron group velocity ( $var element = document.getElementById("moose-equation-76243e14-1a82-4581-801d-744a3fb79b95");katex.render("v_{g}", element, {displayMode:false,throwOnError:false});$ ) for transport problems and forces maximum void stabilization for the SAAF scheme. The properties must be listed in decreasing order by energy.

Overview

Example Input File Syntax

Input Parameters

add_heatingFalseWhether or not this material should provide fission heating cross-sections.
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not this material should provide fission heating cross-sections.
blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
boundaryThe list of boundaries (ids or names) from the mesh where this object applies
C++ Type:std::vector<BoundaryName>
Controllable:No
Description:The list of boundaries (ids or names) from the mesh where this object applies
computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
Default:True
C++ Type:bool
Controllable:No
Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
Default:NONE
C++ Type:MooseEnum
Options:NONE, ELEMENT, SUBDOMAIN
Controllable:No
Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
declare_suffixAn optional suffix parameter that can be appended to any declared 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 declared properties. The suffix will be prepended with a '_' character.
group_speedsThe neutron speeds for all energy groups.
C++ Type:std::vector<double>
Unit:(no unit assumed)
Controllable:No
Description:The neutron speeds for all energy groups.
has_fissionFalseWhether or not the transport system accounts for fission reactions.
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not the transport system accounts for fission reactions.
is_diffusionFalseWhether or not the transport system is initializing a diffusion approximation scheme.
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not the transport system is initializing a diffusion approximation scheme.
is_saafTrueWhether or not the transport system is initializing a SAAF scheme.
Default:True
C++ Type:bool
Controllable:No
Description:Whether or not the transport system is initializing a SAAF scheme.
num_groups0The number of energy groups the energy spectrum is divided into.
Default:0
C++ Type:unsigned int
Controllable:No
Description:The number of energy groups the energy spectrum is divided into.
particle_typeneutronThe type of particle to be consuming material property data.
Default:neutron
C++ Type:MooseEnum
Options:neutron, photon
Controllable:No
Description:The type of particle to be consuming material property data.
transport_systemName of the transport system which will consume the provided material properties. If one is not provided the first transport system will be used.
C++ Type:std::string
Controllable:No
Description:Name of the transport system which will consume the provided material properties. If one is not provided the first transport system will be used.

Optional 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: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
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

output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)
C++ Type:std::vector<std::string>
Controllable:No
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
outputsnone Vector of output names where you would like to restrict the output of variables(s) associated with this object
Default:none
C++ Type:std::vector<OutputName>
Controllable:No
Description:Vector of output names where you would like to restrict the output of variables(s) associated with this object

Outputs Parameters

prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Default:False
C++ Type:bool
Controllable:No
Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.

Material Property Retrieval Parameters

Input Files

(tests/transport_system/saaf_cgfem/test_1D_steady_void.i)
(examples/3D_subcritical_cardinal_xs/neutronics_transport.i)

(tests/transport_system/saaf_cgfem/test_1D_steady_void.i)

[Mesh]
  [domain]
    type = CartesianMeshGenerator
    dim = 1
    dx = 10
    ix = 100
  []
[]

[TransportSystems]
  [Neutron]
    scheme = saaf_cfem
    particle_type = neutron
    num_groups = 1
    output_angular_fluxes = true

    order = FIRST
    family = LAGRANGE

    n_azimuthal = 1
    n_polar = 1

    max_anisotropy = 0
    vacuum_boundaries = 'left right'

    point_source_locations = '5.0 0.0 0.0'
    point_source_moments = '1000.0'
    point_source_anisotropies = '0'

    debug_verbosity = level0
    debug_disable_scattering = true
  []
[]

[TransportMaterials]
  [Domain]
    type = VoidTransportMaterial
    transport_system = Neutron
    group_speeds = 2200.0
  []
[]

[Problem]
  type = FEProblem
[]

[Outputs]
  exodus = true
[]

[Executioner]
  type = Steady
  solve_type = PJFNK
  petsc_options_iname = '-pc_type -pc_hypre_type'
  petsc_options_value = 'hypre boomeramg'
[]

(examples/3D_subcritical_cardinal_xs/neutronics_transport.i)

[Mesh]
  [NeutronicsDomain]
    type = FileMeshGenerator
    file = openmc_out.e
    use_for_exodus_restart = true
  []
  uniform_refine = 0
[]

[TransportSystems]
  [Neutron]
    num_groups = 3
    max_anisotropy = 0
    scheme = saaf_cfem
    particle_type = neutron

    flux_moment_names = 'Flux_Moment'
    debug_disable_fission = false
    eigen = true
    constant_ic = '1.0'

    order = FIRST
    family = LAGRANGE

    n_azimuthal = 3
    n_polar = 3

    vacuum_boundaries = '10000'
    reflective_boundaries = '10001'

    #volumetric_source_blocks = '5'
    #volumetric_source_anisotropies = '0'
    #volumetric_source_moments = '1.0 0.0 0.0 0.0'
  []
[]

[CardinalMGXS]
  xs_source = 'subapp'
  from_multi_app = 'cardinal_xs'

  transport_system = 'Neutron'
  scatter_anisotropy = 0
  add_fission_heating = true

  block = 'fuel cladding graphite_core graphite_reflector stainless_steel
           fuel_trimmer_tri graphite_core_trimmer_tri graphite_reflector_trimmer_tri
           stainless_steel_trimmer_tri'
[]

[TransportMaterials]
  [Void]
    type = VoidTransportMaterial
    block = 'air src src_trimmer_tri'
  []
[]

[Postprocessors]
  [TotalFlux]
    type = TotalFluxPostProcessor
    num_groups = 3
    group_scalar_fluxes = 'Flux_Moment_1_0_0 Flux_Moment_2_0_0 Flux_Moment_3_0_0'
    execute_on = LINEAR
    outputs = 'csv'
  []
[]

[VectorPostprocessors]
  [EigenValues]
    type = Eigenvalues
    inverse_eigenvalue = true
  []
[]

[Executioner]
  type = Eigenvalue

  initial_eigenvalue = 1.2
  normal_factor = 1.0
  normalization = 'TotalFlux'
  free_power_iterations = 6

  solve_type = PJFNK
  #petsc_options_iname = '-pc_type -pc_hypre_type -ksp_gmres_restart'
  #petsc_options_value = ' hypre    boomeramg      600'
  petsc_options_iname = '-ksp_gmres_restart'
  petsc_options_value = ' 600'

  nl_abs_tol = 1e-12

  automatic_scaling = true
  off_diagonals_in_auto_scaling = true
  compute_scaling_once = false
[]

[MultiApps]
  [cardinal_xs]
    type = FullSolveMultiApp
    app_type = 'CardinalApp'
    execute_on = INITIAL
    input_files = 'openmc.i'
  []
[]

[Outputs]
  csv = true
  exodus = true
  execute_on = TIMESTEP_END
[]

Overview
Example Input File Syntax
Input Parameters
Input Files