PCNSFVKTDC

Computes the residual of advective term using finite volume method using a deferred correction approach.

Overview

This object implements a deferred correction approach in the following way for a transient simulation

where is the flux, denotes high order, denotes low order, refers to the current time-step, refers to the previous timestep, and corresponds to the ho_implicit_fraction parameter. The default value for (ho_implicit_fraction) is 0, which corresponds to the canonical deferred correction approach. This default value will result in the best nonlinear convergence when using an implicit time integration scheme. However, if the fluid variables have significant gradients, it may take a very long time (in terms of actual time) to march to a steady-state solution (if that is the intent of the simulation). Setting ho_implicit_fraction = 1 will result in the same solution behavior as directly using PCNSFVKT, which this object inherits from. This will result in the worst nonlinear convergence but will also have the most transient accuracy, and will converge most rapidly to a steady-state solution if it exists (in terms of time). In terms of Time Steps a lower ho_implicit_fraction will generally converge to a steady-state solution quicker if the steady_state_tolerance is not tight.

Input Parameters

  • eqnThe equation you're solving.

    C++ Type:MooseEnum

    Options:mass, momentum, energy, scalar

    Controllable:No

    Description:The equation you're solving.

  • fpFluid userobject

    C++ Type:UserObjectName

    Controllable:No

    Description:Fluid userobject

  • variableThe name of the variable that this residual object operates on

    C++ Type:NonlinearVariableName

    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

  • ho_implicit_fraction0The fraction of the high order flux that should be implicit

    Default:0

    C++ Type:double

    Controllable:No

    Description:The fraction of the high order flux that should be implicit

  • knp_for_omegaTrueWhether to use the Kurganov, Noelle, and Petrova method to compute the omega parameter for stabilization. If false, then the Kurganov-Tadmor method will be used.

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Whether to use the Kurganov, Noelle, and Petrova method to compute the omega parameter for stabilization. If false, then the Kurganov-Tadmor method will be used.

  • limiterupwindThe limiter to apply during interpolation.

    Default:upwind

    C++ Type:MooseEnum

    Options:vanLeer, upwind, central_difference, min_mod, sou, quick

    Controllable:No

    Description:The limiter to apply during interpolation.

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

    C++ Type:MooseEnum

    Options:x, y, z

    Controllable:No

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

  • 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

    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.

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_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_tagsnontimeThe tag for the vectors this Kernel should fill

    Default:nontime

    C++ Type:MultiMooseEnum

    Options:nontime, time

    Controllable:No

    Description:The tag for the vectors this Kernel should fill

Tagging Parameters

  • boundaries_to_avoidThe set of sidesets to not execute this FVFluxKernel on. This takes precedence over force_boundary_execution to restrict to less external boundaries. By default flux kernels are executed on all internal boundaries and Dirichlet boundary conditions.

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

    Controllable:No

    Description:The set of sidesets to not execute this FVFluxKernel on. This takes precedence over force_boundary_execution to restrict to less external boundaries. By default flux kernels are executed on all internal boundaries and Dirichlet boundary conditions.

  • boundaries_to_forceThe set of sidesets to force execution of this FVFluxKernel on. Setting force_boundary_execution to true is equivalent to listing all external mesh boundaries in this parameter.

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

    Controllable:No

    Description:The set of sidesets to force execution of this FVFluxKernel on. Setting force_boundary_execution to true is equivalent to listing all external mesh boundaries in this parameter.

  • force_boundary_executionFalseWhether to force execution of this object on all external boundaries.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether to force execution of this object on all external boundaries.

Boundary Execution Modification 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_layers2The number of layers of elements to ghost.

    Default:2

    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