MFEMVectorFEWeakDivergenceKernel.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
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//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#ifdef MOOSE_MFEM_ENABLED

#include "MFEMVectorFEWeakDivergenceKernel.h"
#include "MFEMProblem.h"

registerMooseObject("MooseApp", MFEMVectorFEWeakDivergenceKernel);

InputParameters
MFEMVectorFEWeakDivergenceKernel::validParams()
{
  InputParameters params = MFEMKernel::validParams();
  params.addClassDescription(
      "Adds the domain integrator to an MFEM problem for the mixed bilinear form "
      "$(-k\\vec u, \\vec\\nabla v)_\\Omega$ "
      "arising from the weak form of the divergence operator "
      "$\\vec \\nabla \\cdot (k\\vec u)$.");
  params.addParam<MFEMScalarCoefficientName>("coefficient", "1.", "Name of property k to use.");
  return params;
}

MFEMVectorFEWeakDivergenceKernel::MFEMVectorFEWeakDivergenceKernel(
    const InputParameters & parameters)
  : MFEMKernel(parameters), _coef(getScalarCoefficient("coefficient"))
{
}

mfem::BilinearFormIntegrator *
MFEMVectorFEWeakDivergenceKernel::createBFIntegrator()
{
  return new mfem::VectorFEWeakDivergenceIntegrator(_coef);
}

#endif