AdvectiveFluxAux

Compute components of flux vector for advection problems .

Description

The AdvectiveFluxAux AuxKernel is used to compute a component of an advective flux vector. The flux is computed as

where is the advection flux vector, is the advected quantity, is the velocity, and is the normal for the desired component which can be the x, y, z axis or the normal direction (only near boundaries).

This auxkernel supports CONSTANT and FIRST MONOMIAL AuxVariable types. The advection velocity is required with "vel_x" for advection flux calculation. "vel_y" and "vel_z" are needed for 2D and 3D simulations. The advected quantity can be either a variable"advected_variable" or material property"advected_mat_prop".

warningwarning

The expression of the advective flux in this object is generic, as described, and may differ from the advective flux implemented in your physics implementation. If so, you may not use this object to compute the advective flux.

Example Input Syntax

[AuxKernels]
  [flux_x]
    type = AdvectiveFluxAux
    variable = flux_x
    vel_x = u
    vel_y = v
    advected_mat_prop = 'rho'
    component = x
    boundary = 'block_2_right block_2_left'
  []
[]
(../moose/test/tests/auxkernels/advection_flux/advection_flux_fe.i)

Input Parameters

  • componentThe desired component of flux.

    C++ Type:MooseEnum

    Options:x, y, z, normal

    Controllable:No

    Description:The desired component of flux.

  • variableThe name of the variable that this object applies to

    C++ Type:AuxVariableName

    Controllable:No

    Description:The name of the variable that this object applies to

  • vel_xx-component of the advecting velocity

    C++ Type:MooseFunctorName

    Controllable:No

    Description:x-component of the advecting velocity

Required Parameters

  • advected_mat_prop0The advected material property of which to study the flow; useful for finite element simulations

    Default:0

    C++ Type:MaterialPropertyName

    Controllable:No

    Description:The advected material property of which to study the flow; useful for finite element simulations

  • advected_variable0The name of the variable

    Default:0

    C++ Type:MooseFunctorName

    Controllable:No

    Description:The name of the variable

  • 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

  • boundaryThe list of boundaries (ids or names) from the mesh where this object applies

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

    Controllable:No

    Description:The list of boundaries (ids or names) from the mesh where this object applies

  • check_boundary_restrictedTrueWhether to check for multiple element sides on the boundary in the case of a boundary restricted, element aux variable. Setting this to false will allow contribution to a single element's elemental value(s) from multiple boundary sides on the same element (example: when the restricted boundary exists on two or more sides of an element, such as at a corner of a mesh

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Whether to check for multiple element sides on the boundary in the case of a boundary restricted, element aux variable. Setting this to false will allow contribution to a single element's elemental value(s) from multiple boundary sides on the same element (example: when the restricted boundary exists on two or more sides of an element, such as at a corner of a mesh

  • execute_onLINEAR TIMESTEP_ENDThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM, ALWAYS, PRE_DISPLACE.

    Default:LINEAR TIMESTEP_END

    C++ Type:ExecFlagEnum

    Options:NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM, ALWAYS, PRE_DISPLACE

    Controllable:No

    Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM, ALWAYS, PRE_DISPLACE.

  • 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.

  • vel_yy-component of the advecting velocity

    C++ Type:MooseFunctorName

    Controllable:No

    Description:y-component of the advecting velocity

  • vel_zz-component of the advecting velocity

    C++ Type:MooseFunctorName

    Controllable:No

    Description:z-component of the advecting velocity

Optional 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.

  • 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