MFEMMixedVectorGradientKernel.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* 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 "MFEMMixedVectorGradientKernel.h"
#include "MFEMProblem.h"
 
registerMooseObject("MooseApp", MFEMMixedVectorGradientKernel);
 
InputParameters
MFEMMixedVectorGradientKernel::validParams()
{
  InputParameters params = MFEMMixedBilinearFormKernel::validParams();
  params.addClassDescription(
      "Adds the domain integrator to an MFEM problem for the mixed bilinear form "
      "$(k\\vec\\nabla u, \\vec v)_\\Omega$ "
      "arising from the weak form of the gradient operator "
      "$k\\vec \\nabla u$.");
  params.addParam<MFEMScalarCoefficientName>("coefficient", "1.", "Name of property k to use.");
  return params;
}
 
MFEMMixedVectorGradientKernel::MFEMMixedVectorGradientKernel(const InputParameters & parameters)
  : MFEMMixedBilinearFormKernel(parameters), _coef(getScalarCoefficient("coefficient"))
// FIXME: The MFEM bilinear form can also handle vector and matrix
// coefficients, so ideally we'd handle all three too.
{
}
 
mfem::BilinearFormIntegrator *
MFEMMixedVectorGradientKernel::createMBFIntegrator()
{
  return new mfem::MixedVectorGradientIntegrator(_coef);
}
 
#endif