KernelGrad.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
 
// local includes
#include "Kernel.h"
 
class KernelGrad : public Kernel
{
public:
  static InputParameters validParams();
 
  KernelGrad(const InputParameters & parameters);
 
  virtual void computeResidual() override;
 
  virtual void computeJacobian() override;
 
  virtual void computeOffDiagJacobian(unsigned int jvar) override;
 
protected:
  virtual RealGradient precomputeQpResidual() = 0;
 
  virtual RealGradient precomputeQpJacobian() { return RealGradient(0.0); }
 
  virtual Real computeQpResidual() override final { return 0.0; }
 
  virtual Real computeQpJacobian() override final { return 0.0; }
};