PWCNSFVMomentumFluxBC

Flux boundary conditions for porous momentum advection.

This object is the porous medium version of WCNSFVMomentumFluxBC.

The momentum flux is:

ϕ=ρvd2ϵ=m˙2ρϵA2\phi = \dfrac{\rho v_d^2}{\epsilon} = \dfrac{\dot{m}^2}{\rho \epsilon A^2}

with ϕ\phi the momentum flux, ρ\rho the density, vdv_d the fluid superficial velocity (assumed normal to the surface here), ϵ\epsilon the porosity of the medium, m˙\dot{m} the mass flow rate, and AA the inlet area.

There are two options for specifying the momentum flux:

  • specifying a mass flow rate postprocessor, which is then divided by the area of the inlet, which may also be a postprocessor.

  • specifying an inlet superficial velocity postprocessor and a density functor. The functor is usually a functor material property, defined by a GeneralFunctorFluidProps.

The scaling factor may be used if the inlet is not aligned with the X or Y direction, in which case a projection is necessary and this boundary condition should be used for both components of the momentum equation.

This boundary condition works with postprocessors, which may be replaced by constant values in the input. The intended use case for this boundary condition is to be receiving its value from a coupled application, using a Receiver postprocessor.

Input Parameters

  • boundaryThe list of boundary IDs from the mesh where this object applies

    C++ Type:std::vector<BoundaryName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The list of boundary IDs from the mesh where this object applies

  • momentum_componentThe component of the momentum equation that this kernel applies to.

    C++ Type:MooseEnum

    Unit:(no unit assumed)

    Options:x, y, z

    Controllable:No

    Description:The component of the momentum equation that this kernel applies to.

  • rhie_chow_user_objectThe rhie-chow user-object

    C++ Type:UserObjectName

    Unit:(no unit assumed)

    Controllable:No

    Description:The rhie-chow user-object

  • rhoDensity functor. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Density functor. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • variableThe name of the variable that this boundary condition applies to

    C++ Type:NonlinearVariableName

    Unit:(no unit assumed)

    Controllable:No

    Description:The name of the variable that this boundary condition applies to

  • vel_xThe x-axis velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:The x-axis velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

Required Parameters

  • area_ppInlet area as a postprocessor

    C++ Type:PostprocessorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Inlet area as a postprocessor

  • direction0 0 0The direction of the flow at the boundary. This is mainly used for cases when an inlet angle needs to be defined with respect to the normal and when a boundary is defined on an internal face where the normal can point in both directions. Use positive mass flux and velocity magnitude if the flux aligns with this direction vector.

    Default:0 0 0

    C++ Type:libMesh::Point

    Unit:(no unit assumed)

    Controllable:No

    Description:The direction of the flow at the boundary. This is mainly used for cases when an inlet angle needs to be defined with respect to the normal and when a boundary is defined on an internal face where the normal can point in both directions. Use positive mass flux and velocity magnitude if the flux aligns with this direction vector.

  • displacementsThe displacements

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The displacements

  • mdot_ppPostprocessor with the inlet mass flow rate

    C++ Type:PostprocessorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Postprocessor with the inlet mass flow rate

  • porosityporosityPorosity functor. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    Default:porosity

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Porosity functor. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • 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.

  • scaling_factor1To scale the mass flux

    Default:1

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:To scale the mass flux

  • 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.

  • vel_yThe y-axis velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:The y-axis velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • vel_zThe z-axis velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:The z-axis velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • velocity_ppPostprocessor with the inlet velocity norm

    C++ Type:PostprocessorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Postprocessor with the inlet velocity norm

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.

  • 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

  • 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