- muDynamic viscosity. 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:Dynamic viscosity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- mu_tTurbulent viscosity. 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:Turbulent viscosity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- rhofluid density. 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:fluid density. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- tkeCoupled turbulent kinetic energy. 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:Coupled turbulent kinetic energy. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- uThe velocity in the x direction. 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 velocity in the x direction. 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 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
INSFVTKEDSourceSink
The object computes the turbulent source and sink term for the turbulent kinetic energy dissipation rate equation.
Two terms are computed: destruction
and production
and the term destruction - production
is passed to the residual. A different treatment is used for the bulk and the near wall regions.
Bulk formulation:
The production of turbulent kinetic energy dissipation is modeled as follows:
where:
is a closure parameter,
is the limited turbulent kinetic energy production. For more details please refer to INSFVTKESourceSink.
The destruction of the turbulent kinetic energy dissipation rate is modeled as follows:
where:
is a closure parameter,
is the solution variable, i.e., the dissipation rate of the turbulent kinetic energy,
is the turbulent kinetic energy,
is the turbulent time scale; if the "linearized_model" is
true
, this timescale is computed from the previous iteration; if "linearized_model" isfalse
, in a nonlinear solve, this timescale is aded to the Jacobian.
Wall formulation:
All cells in contact with a boundary identified in the "walls" list are applied a different treatment in which the equilibrium value for the is set. A separate formulation is used for the sub-laminar
and logarithmic
boundary layers. The determination of whether the near-wall cell lies in the laminar or logarithmic region is performed via the non-dimensional wall distance . The non-dimensional wall distance can be defined differently according to the "wall_treatment" parameter.
The four formulations are described in more detail in INSFVTurbulentViscosityWallFunction.
If an equilibrium "wall_treatment" is defined, i.e. eq_newton
,eq_incremental
or eq_linearized
, the standard wall function formulations are used in which is found:
where:
is the density,
is the distance from the wall to the centroid of the next-to-wall cell,
is the friction velocity, defined as with the shear stress at the wall for which the condition is applied,
is the dynamic molecular viscosity.
If a non-equilibrium "wall_treatment" is defined, i.e. neq
, the is defined non-iteratively as follows:
Using non-equilibrium wall functions is recommended for problems with recirculations and boundary layer detachment. However, using non-equilibrium wall functions will deteriorate results for standard problems such as flow developing over walls.
The cells with belong to sub-laminar
boundary layer. The ones belonging to the logarithmic
boundary layer are those for which .
A different value is used for in each of the two regions. For the sub-laminar
boundary layer, the equilibrium value is determined as follows:
where:
is the turbulent dynamic viscosity.
For the logarithmic
boundary layer, the value is determined as follows:
where:
is the von Kármán constant.
When using wall functions, since the equilibrium value for is set in the cells near the wall, the user is recommended to deactivate advection and diffusion for those near wall cells.
When the wall treatment is specified in this kernel, any boundary condition for will be ignored. In other words, there is no need to impose boundary conditions for when the wall treatment is specified in his kernel.
When using near-wall treatment, we assume that the functor is computed by an object that performs near-wall treatment. Otherwise, the results obtained won't be physically correct.
Input Parameters
- C1_eps1.44First epsilon coefficient
Default:1.44
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:First epsilon coefficient
- C2_eps1.92Second epsilon coefficient
Default:1.92
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Second epsilon coefficient
- C_mu0.09Coupled turbulent kinetic energy closure.
Default:0.09
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Coupled turbulent kinetic energy closure.
- C_pl10Production limiter constant multiplier.
Default:10
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Production limiter constant multiplier.
- blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Unit:(no unit assumed)
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
- linearized_modelTrueBoolean to determine if the problem should be used in a linear or nonlinear solve
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Boolean to determine if the problem should be used in a linear or nonlinear solve
- 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
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.
- vThe velocity in the y direction. 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 velocity in the y direction. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- wThe velocity in the z direction. 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 velocity in the z direction. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.
- wall_treatmentneqThe method used for computing the wall functions 'eq_newton', 'eq_incremental', 'eq_linearized', 'neq'
Default:neq
C++ Type:MooseEnum
Unit:(no unit assumed)
Controllable:No
Description:The method used for computing the wall functions 'eq_newton', 'eq_incremental', 'eq_linearized', 'neq'
- wallsBoundaries that correspond to solid walls.
C++ Type:std::vector<BoundaryName>
Unit:(no unit assumed)
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>
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)
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)
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
- newton_solveFalseWhether a Newton nonlinear solve is being used
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Whether a Newton nonlinear solve is being used
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Unit:(no unit assumed)
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
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
- ghost_layers2The number of layers of elements to ghost.
Default:2
C++ Type:unsigned short
Unit:(no unit assumed)
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
Unit:(no unit assumed)
Controllable:No
Description:Whether to use point neighbors, which introduces additional ghosting to that used for simple face neighbors.