LinearFVTurbulentTimeDerivative

This object extends LinearFVTimeDerivative to allow the time derivative to be skipped at certain boundaries, in support of the standard wall functions in the turbulence model.

The particularity of this kernel is that it allows us to skip computing the time derivative for near-wall elements. For any element that is in contact with a boundary identified in the "walls" list, the time derivative contributions will be skipped for that element. This is consistent with LinearFVTurbulentAdvection and LinearFVTurbulentDiffusion, which skip the same elements, leaving their rows to the wall treatment of the source kernels.

Input Parameters

  • variableThe name of the variable whose linear system this object contributes to

    C++ Type:LinearVariableName

    Unit:(no unit assumed)

    Controllable:No

    Description:The name of the variable whose linear system this object contributes to

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

  • conservative_formTrueWhether to assemble the time derivative of the product, d(cu)/dt, rather than the multiplier times the transient of the variable, c du/dt. The conservative form is the default because it is the more general of the two: where the multiplier does not vary in time every state of it is the same value, the product form collapses to c du/dt exactly. Where it does vary they differ, and it is the conservative form that most conservation laws ask for. Set this to false to recover the multiplier held outside the derivative.

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Whether to assemble the time derivative of the product, d(cu)/dt, rather than the multiplier times the transient of the variable, c du/dt. The conservative form is the default because it is the more general of the two: where the multiplier does not vary in time every state of it is the same value, the product form collapses to c du/dt exactly. Where it does vary they differ, and it is the conservative form that most conservation laws ask for. Set this to false to recover the multiplier held outside the derivative.

  • factor1A multiplier on the variable within the time derivative. A functor is any of the following: a variable, a functor material property, a function, a postprocessor or a number.

    Default:1

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:A multiplier on the variable within the time derivative. A functor is any of the following: a variable, a functor material property, a function, a postprocessor or a number.

  • wallsBoundaries that correspond to solid walls.

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

    Controllable:No

    Description:Boundaries that correspond to solid walls.

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_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)

  • 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_tagsrhsThe tag for the vectors this Kernel should fill

    Default:rhs

    C++ Type:MultiMooseEnum

    Options:rhs, 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.

  • 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

  • ghost_layers1The number of layers of elements to ghost.

    Default:1

    C++ Type:unsigned short

    Controllable:No

    Description:The number of layers of elements to ghost.

  • use_point_neighborsFalseWhether to use point neighbors, which introduces additional ghosting to that used for simple face neighbors.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether to use point neighbors, which introduces additional ghosting to that used for simple face neighbors.

Parallel Ghosting Parameters

Input Files