AnalyticalIndicator.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
 
#include "AnalyticalIndicator.h"
#include "Function.h"
 
registerMooseObject("MooseApp", AnalyticalIndicator);
 
InputParameters
AnalyticalIndicator::validParams()
{
  InputParameters params = ElementIntegralIndicator::validParams();
  params.addRequiredParam<FunctionName>("function", "The analytic solution to compare against");
  params.addClassDescription("Compute the square of the error as the difference between an unknown "
                             "variable and an analytical solution.");
  return params;
}
 
AnalyticalIndicator::AnalyticalIndicator(const InputParameters & parameters)
  : ElementIntegralIndicator(parameters), _func(getFunction("function"))
{
}
 
Real
AnalyticalIndicator::computeQpIntegral()
{
  Real diff = _u[_qp] - _func.value(_t, _q_point[_qp]);
  return diff * diff;
}