PorousFlowMassVolumetricExpansion

Component_mass*rate_of_solid_volumetric_expansion. This Kernel lumps the component mass to the nodes.

This Kernel implements the weak form of ϕβSβρβχβκvs \phi\sum_{\beta}S_{\beta}\rho_{\beta}\chi_{\beta}^{\kappa}\nabla\cdot\mathbf{v}_{s} where all parameters are defined in the nomenclature.

commentnote

A mass-lumped version is implemented.

See mass lumping for details.

Because it contains volumetric strain, this Kernel always sets use_displaced_mesh = false and the parameter cannot be altered by the user. Further information can be found here

The multiplication by ρβ\rho_{\beta} is optional and is controlled by the multiply_by_density flag. It is sometimes advantageous to use this flag because the problem becomes more linear. However, this sometimes changes the nature of the physical problem modelled, and care must be taken when using other PorousFlow objects (that intrinsically have multiply_by_density = true, such as PorousFlowFluidMass) so new users are encouraged to use the default multiply_by_density = true flag until they gain familiarity with PorousFlow.

Input Parameters

  • PorousFlowDictatorThe UserObject that holds the list of PorousFlow variable names.

    C++ Type:UserObjectName

    Controllable:No

    Description:The UserObject that holds the list of PorousFlow variable names.

  • 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>

    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

  • fluid_component0The index corresponding to the component for this kernel

    Default:0

    C++ Type:unsigned int

    Controllable:No

    Description:The index corresponding to the component for this kernel

  • matrix_onlyFalseWhether this object is only doing assembly to matrices (no vectors)

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether this object is only doing assembly to matrices (no vectors)

  • multiply_by_densityTrueIf true, then this Kernel represents component_mass*rate_of_solid_volumetric_expansion. If flase, then this Kernel represents component_volume*rate_of_solid_volumetric_expansion (care must then be taken when using other PorousFlow objects, such as the PorousFlowFluidMass postprocessor).

    Default:True

    C++ Type:bool

    Controllable:No

    Description:If true, then this Kernel represents component_mass*rate_of_solid_volumetric_expansion. If flase, then this Kernel represents component_volume*rate_of_solid_volumetric_expansion (care must then be taken when using other PorousFlow objects, such as the PorousFlowFluidMass postprocessor).

  • strain_at_nearest_qpFalseWhen calculating nodal porosity that depends on strain, use the strain at the nearest quadpoint. This adds a small extra computational burden, and is not necessary for simulations involving only linear lagrange elements. If you set this to true, you will also want to set the same parameter to true for related Kernels and Materials

    Default:False

    C++ Type:bool

    Controllable:No

    Description:When calculating nodal porosity that depends on strain, use the strain at the nearest quadpoint. This adds a small extra computational burden, and is not necessary for simulations involving only linear lagrange elements. If you set this to true, you will also want to set the same parameter to true for related Kernels and Materials

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_tagssystem timeThe tag for the matrices this Kernel should fill

    Default:system time

    C++ Type:MultiMooseEnum

    Options:nontime, system, time

    Controllable:No

    Description:The tag for the matrices this Kernel should fill

  • vector_tagstimeThe tag for the vectors this Kernel should fill

    Default:time

    C++ Type:MultiMooseEnum

    Options:nontime, time

    Controllable:No

    Description:The tag for the vectors this Kernel should fill

Contribution To Tagged Field Data 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 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

    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 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

    Controllable:No

    Description:The seed for the master random number generator

Advanced 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