MFEML2Error.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 "MFEML2Error.h"
#include "MFEMProblem.h"
 
registerMooseObject("MooseApp", MFEML2Error);
 
InputParameters
MFEML2Error::validParams()
{
  InputParameters params = MFEMPostprocessor::validParams();
  params.addClassDescription(
      "Computes L2 error $\\left\\Vert u_{ex} - u_{h}\\right\\Vert_{\\rm L2}$ for "
      "gridfunctions using H1 or L2 elements.");
  params.addParam<MFEMScalarCoefficientName>("function",
                                             "The analytic solution to compare against.");
  MFEMExecutedObject::addRequiredDependencyParam<VariableName>(
      params, "variable", "Name of the variable of which to find the norm of the error.");
  return params;
}
 
MFEML2Error::MFEML2Error(const InputParameters & parameters)
  : MFEMPostprocessor(parameters),
    _coeff(getScalarCoefficient("function")),
    _var(*getMFEMProblem().getGridFunction(getParam<VariableName>("variable")))
{
}
 
void
MFEML2Error::initialize()
{
}
 
void
MFEML2Error::execute()
{
}
 
PostprocessorValue
MFEML2Error::getValue() const
{
  return _var.ComputeL2Error(_coeff);
}
 
#endif