MooseVariableLinearFVReal

Overview

This variable is used for finite volume simulations where a linear system is solved with the following form:

where is the vector containing the degrees of freedom for the declared variable, while and are the corresponding system matrix and right hand side, respectively.

commentnote

This variable can only be used with linear systems and cannot be used for systems which need Jacobian and residual evaluations, such as nonlinear systems being solved by Newton or quasi-Newton methods.

Similarly to MooseVariableFVReal, this variable describes a field which has been discretized using the cell-centered finite volume method and can be evaluated using the functor system in MOOSE.

Example Input File Syntax

To create a MooseLinearVariableFVReal, users can do the following in their input files:


[Variables]
  [v]
    type = MooseLinearVariableFVReal
  []
[]

Note that unlike the case of finite element variables, the user needs to explicitly define the type of the variable.

Input Parameters

  • arrayFalseTrue to make this variable a array variable regardless of number of components. If 'components' > 1, this will automatically be set to true.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:True to make this variable a array variable regardless of number of components. If 'components' > 1, this will automatically be set to true.

  • 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

  • components1Number of components for an array variable

    Default:1

    C++ Type:unsigned int

    Controllable:No

    Description:Number of components for an array variable

  • familyMONOMIALSpecifies the family of FE shape functions to use for this variable.

    Default:MONOMIAL

    C++ Type:MooseEnum

    Options:LAGRANGE, MONOMIAL, HERMITE, SCALAR, HIERARCHIC, CLOUGH, XYZ, SZABAB, BERNSTEIN, L2_LAGRANGE, L2_HIERARCHIC, NEDELEC_ONE, LAGRANGE_VEC, MONOMIAL_VEC, RAVIART_THOMAS, RATIONAL_BERNSTEIN, SIDE_HIERARCHIC

    Controllable:No

    Description:Specifies the family of FE shape functions to use for this variable.

  • fvTrueTrue to make this variable a finite volume variable

    Default:True

    C++ Type:bool

    Controllable:No

    Description:True to make this variable a finite volume variable

  • orderCONSTANTOrder of the FE shape function to use for this variable (additional orders not listed here are allowed, depending on the family).

    Default:CONSTANT

    C++ Type:MooseEnum

    Options:CONSTANT, FIRST, SECOND, THIRD, FOURTH, FIFTH, SIXTH, SEVENTH, EIGHTH, NINTH, TENTH, ELEVENTH, TWELFTH, THIRTEENTH, FOURTEENTH, FIFTEENTH, SIXTEENTH, SEVENTEENTH, EIGHTTEENTH, NINETEENTH, TWENTIETH, TWENTYFIRST, TWENTYSECOND, TWENTYTHIRD, TWENTYFOURTH, TWENTYFIFTH, TWENTYSIXTH, TWENTYSEVENTH, TWENTYEIGHTH, TWENTYNINTH, THIRTIETH, THIRTYFIRST, THIRTYSECOND, THIRTYTHIRD, THIRTYFOURTH, THIRTYFIFTH, THIRTYSIXTH, THIRTYSEVENTH, THIRTYEIGHTH, THIRTYNINTH, FORTIETH, FORTYFIRST, FORTYSECOND, FORTYTHIRD

    Controllable:No

    Description:Order of the FE shape function to use for this variable (additional orders not listed here are allowed, depending on the family).

  • solver_sysnl0If this variable is a solver variable, this is the solver system to which it should be added.

    Default:nl0

    C++ Type:SolverSystemName

    Controllable:No

    Description:If this variable is a solver variable, this is the solver system to which it should be added.

  • use_dualFalseTrue to use dual basis for Lagrange multipliers

    Default:False

    C++ Type:bool

    Controllable:No

    Description:True to use dual basis for Lagrange multipliers

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.

  • eigenFalseTrue to make this variable an eigen variable

    Default:False

    C++ Type:bool

    Controllable:No

    Description:True to make this variable an eigen variable

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set the enabled status of the MooseObject.

  • outputsVector of output names where you would like to restrict the output of variables(s) associated with this object

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

    Controllable:No

    Description:Vector of output names where you would like to restrict the output of variables(s) associated with this object

  • scalingSpecifies a scaling factor to apply to this variable

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

    Controllable:No

    Description:Specifies a scaling factor to apply to this variable

Advanced Parameters