AddMFEMSubMeshAction

Summary

Add an MFEM SubMesh object to the simulation.

Overview

Action called to add an MFEM finite element space to the problem, parsing content inside a SubMeshes 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
[]

[SubMeshes<<<{"href": "../../../syntax/SubMeshes/index.html"}>>>]
  [wire]
    type = MFEMDomainSubMesh<<<{"description": "Class to construct an MFEMSubMesh formed from the subspace of the parent mesh restricted to the set of user-specified subdomains.", "href": "../submeshes/MFEMDomainSubMesh.html"}>>>
    block<<<{"description": "The list of subdomains (names or ids) that this object will be restricted to. Leave empty to apply to all subdomains."}>>> = interior
  []
[]

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/submeshes/domain_submesh.i)

[Mesh]
  type = MFEMMesh
  file = ../mesh/cylinder-hex-q2.gen
[]

[Problem]
  type = MFEMProblem
[]

[SubMeshes]
  [wire]
    type = MFEMDomainSubMesh
    block = interior
  []
[]

[FESpaces]
  [SubMeshH1FESpace]
    type = MFEMScalarFESpace
    fec_type = H1
    fec_order = FIRST
    submesh = wire
  []
  [H1FESpace]
    type = MFEMScalarFESpace
    fec_type = H1
    fec_order = FIRST
  []
[]

[Variables]
  [submesh_potential]
    type = MFEMVariable
    fespace = SubMeshH1FESpace
  []
[]

[BCs]
  [top]
    type = MFEMScalarDirichletBC
    variable = submesh_potential
    boundary = front
    coefficient = 1.0
  []
  [bottom]
    type = MFEMScalarDirichletBC
    variable = submesh_potential
    boundary = back
  []
[]

[Kernels]
  [diff]
    type = MFEMDiffusionKernel
    variable = submesh_potential
  []
[]

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

[Solver]
  type = MFEMHypreGMRES
  preconditioner = boomeramg
  l_tol = 1e-8
  l_max_its = 1000
[]

[Executioner]
  type = MFEMSteady
  device = cpu
[]

[Outputs]
  [ParaViewDataCollection]
    type = MFEMParaViewDataCollection
    file_base = OutputData/DomainPotential
    vtk_format = ASCII
    submesh = wire
  []
[]

Summary
Overview
Example Input File Syntax
Input Parameters