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();

  virtual Real computeQpResidual() override;
};