AddMFEMQuadratureFunctionAction

Overview

Action called to add an MFEM quadrature function coefficient to the problem, parsing content inside a QuadratureFunctions block in the user input. Only has an effect if the Problem type is set to MFEMProblem.

Example Input File Syntax

[Problem<<<{"href": "../../../syntax/Problem/index.html"}>>>]
  type = MFEMProblem
[]

[QuadratureFunctions<<<{"href": "../../../syntax/QuadratureFunctions/index.html"}>>>]
  [qf_source]
    type = MFEMScalarQuadratureFunction<<<{"description": "Declares a scalar MFEM coefficient holding precomputed values of a source coefficient at quadrature points. Values are (re)projected lazily when the coefficient is used.", "href": "../functions/MFEMScalarQuadratureFunction.html"}>>>
    coefficient<<<{"description": "Scalar coefficient to project onto the quadrature points. A functor is any of the following: a variable, an MFEM material property, a function, a postprocessor or a number."}>>> = source
    # match the default integration rule order used by DomainLFIntegrator
    # for first-order elements (oa * fe_order + ob = 2 * 1 + 0)
    order<<<{"description": "Order of the quadrature rule the projected values are stored on. This must match the integration rule used by the objects consuming this coefficient."}>>> = 2
  []
[]

Input Parameters

active__all__ If specified only the blocks named will be visited and made active
Default:__all__
C++ Type:std::vector<std::string>
Controllable:No
Description:If specified only the blocks named will be visited and made active
inactiveIf specified blocks matching these identifiers will be skipped.
C++ Type:std::vector<std::string>
Controllable:No
Description:If specified blocks matching these identifiers will be skipped.

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.

Advanced Parameters

(test/tests/mfem/functions/quadrature_function_source.i)

[Mesh]
  type = MFEMMesh
  file = ../mesh/hinomaru.e
[]

[Problem]
  type = MFEMProblem
[]

[FESpaces]
  [H1FESpace]
    type = MFEMScalarFESpace
    fec_type = H1
    fec_order = FIRST
  []
[]

[Variables]
  [variable]
    type = MFEMVariable
    fespace = H1FESpace
  []
[]

[ICs]
  [ic]
    type = MFEMScalarIC
    variable = variable
    coefficient = material
  []
[]

[BCs]
  [bc]
    type = MFEMScalarDirichletBC
    variable = variable
    boundary = skin
  []
[]

[FunctorMaterials]
  [material]
    type = MFEMGenericFunctorMaterial
    prop_names = material
    prop_values = -100
  []
[]

[Functions]
  [r]
    type = ParsedFunction
    expression = hypot(x,y)
  []
  [p]
    type = ParsedFunction
    expression = atan2(y,x)
  []
  [source]
    type = MFEMParsedFunction
    expression = v*sin(w*p)
    symbol_names = 'p w v'
    symbol_values = 'p 4 variable'
  []
  [solution]
    type = MFEMParsedFunction
    expression = if(r<=1,-c*sin(w*p)*(r^w-r^2)/(w^2-4),0)
    symbol_names = 'r p w c'
    symbol_values = 'r p 4 material'
  []
[]

[QuadratureFunctions]
  [qf_source]
    type = MFEMScalarQuadratureFunction
    coefficient = source
    # match the default integration rule order used by DomainLFIntegrator
    # for first-order elements (oa * fe_order + ob = 2 * 1 + 0)
    order = 2
  []
[]

[Kernels]
  [diff]
    type = MFEMDiffusionKernel
    variable = variable
  []
  [source]
    type = MFEMDomainLFKernel
    variable = variable
    coefficient = qf_source
    block = wire
  []
[]

[Solvers]
  [boomeramg]
    type = MFEMHypreBoomerAMG
  []
  [main]
    type = MFEMHyprePCG
    preconditioner = boomeramg
    l_tol = 1e-16
  []
[]

[Executioner]
  type = MFEMSteady
  device = cpu
[]

[Postprocessors]
  [error]
    type = MFEML2Error
    variable = variable
    function = solution
  []
[]

[Outputs]
  csv = true
  file_base = OutputData/QuadratureFunctionSource
[]

Overview
Example Input File Syntax
Input Parameters