AddFESpaceAction

Summary

Add a MFEM FESpace object to the simulation.

Overview

Action called to add an MFEM finite element space to the problem, parsing content inside an MFEMFESpace block in the user input. Only has an effect if the Problem type is set to MFEMProblem.

Example Input File Syntax

[Problem]
  type = MFEMProblem
[]

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

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/kernels/heatconduction.i)

[Mesh]
  type = MFEMMesh
  file = gold/mug.e
  dim = 3
[]

[Problem]
  type = MFEMProblem
[]

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

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

[BCs]
  [bottom]
    type = MFEMScalarDirichletBC
    variable = temperature
    boundary = '1'
    value = 1.0
  []
  [low_terminal]
    type = MFEMScalarDirichletBC
    variable = temperature
    boundary = '2'
    value = 0.0
  []
[]

[Materials]
  [Substance]
    type = MFEMGenericConstantMaterial
    prop_names = 'thermal_conductivity volumetric_heat_capacity'
    prop_values = '1.0 1.0'
  []
[]

[Kernels]
  [diff]
    type = MFEMDiffusionKernel
    variable = temperature
    coefficient = thermal_conductivity
  []
  [dT_dt]
    type = MFEMTimeDerivativeMassKernel
    variable = temperature
    coefficient = volumetric_heat_capacity
  []  
[]

[Preconditioner]
  [boomeramg]
    type = MFEMHypreBoomerAMG
  []
[]

[Solver]
  type = MFEMHypreGMRES
  preconditioner = boomeramg
  l_tol = 1e-16
  l_max_its = 1000  
[]

[Executioner]
  type = MFEMTransient
  device = cpu
  dt = 0.25
  start_time = 0.0
  end_time = 1.0
[]

[Outputs]
  [ParaViewDataCollection]
    type = MFEMParaViewDataCollection
    file_base = OutputData/HeatConduction
    vtk_format = ASCII
  []
[]

Summary
Overview
Example Input File Syntax
Input Parameters