ADCHSoretMobility.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 "ADCHSoretMobility.h"
 
registerMooseObject("PhaseFieldApp", ADCHSoretMobility);
 
InputParameters
ADCHSoretMobility::validParams()
{
  InputParameters params = ADKernel::validParams();
  params.addClassDescription("Adds contribution due to thermo-migration to the Cahn-Hilliard "
                             "equation using a concentration 'u', temperature 'T', and thermal "
                             "mobility 'mobility' (in units of length squared per time).");
  params.addRequiredCoupledVar("T", "The temperature variable");
  params.addRequiredParam<MaterialPropertyName>("mobility", "The mobility property name");
  return params;
}
 
ADCHSoretMobility::ADCHSoretMobility(const InputParameters & parameters)
  : ADKernel(parameters),
    _T(adCoupledValue("T")),
    _grad_T(adCoupledGradient("T")),
    _mobility(getADMaterialProperty<Real>("mobility"))
{
}
 
ADReal
ADCHSoretMobility::computeQpResidual()
{
  return _mobility[_qp] * _grad_T[_qp] / _T[_qp] * _grad_test[_i][_qp];
}