ADSplitCHWResBase.h

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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
 
#pragma once
 
#include "ADKernelGrad.h"
#include "DerivativeMaterialInterface.h"
 
template <typename T>
class ADSplitCHWResBase : public ADKernelGrad
{
public:
  static InputParameters validParams();
 
  ADSplitCHWResBase(const InputParameters & parameters);
 
protected:
  virtual ADRealVectorValue precomputeQpResidual();
 
  const MaterialPropertyName _mob_name;
  const ADMaterialProperty<T> & _mob;
};
 
template <typename T>
ADSplitCHWResBase<T>::ADSplitCHWResBase(const InputParameters & parameters)
  : ADKernelGrad(parameters),
    _mob_name(getParam<MaterialPropertyName>("mob_name")),
    _mob(getADMaterialProperty<T>("mob_name"))
{
}
 
template <typename T>
ADRealVectorValue
ADSplitCHWResBase<T>::precomputeQpResidual()
{
  return _mob[_qp] * _grad_u[_qp];
}
 
template <typename T>
InputParameters
ADSplitCHWResBase<T>::validParams()
{
  InputParameters params = ADKernelGrad::validParams();
  params.addClassDescription(
      "Split formulation Cahn-Hilliard Kernel for the chemical potential variable");
  params.addParam<MaterialPropertyName>("mob_name", "mobtemp", "The mobility used with the kernel");
  return params;
}