ADDGKernel.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 "DGKernelBase.h"

class ADDGKernel : public DGKernelBase, public NeighborMooseVariableInterface<Real>
{
public:
  static InputParameters validParams();

  ADDGKernel(const InputParameters & parameters);

private:
  void computeElemNeighResidual(Moose::DGResidualType type) override final;
  void computeElemNeighJacobian(Moose::DGJacobianType type) override final;
  void computeOffDiagElemNeighJacobian(Moose::DGJacobianType type,
                                       const MooseVariableFEBase & jvar) override final;
  void computeJacobian() override final;
  void computeOffDiagJacobian(unsigned int jvar) override final;

protected:
  const MooseVariableFEBase & variable() const override { return _var; }

  virtual ADReal computeQpResidual(Moose::DGResidualType type) = 0;

  MooseVariable & _var;
  const VariablePhiValue & _phi;
  const VariablePhiGradient & _grad_phi;
  const VariableTestValue & _test;
  const VariableTestGradient & _grad_test;
  const VariablePhiValue & _phi_neighbor;
  const VariablePhiGradient & _grad_phi_neighbor;
  const VariableTestValue & _test_neighbor;
  const VariableTestGradient & _grad_test_neighbor;

  const ADVariableValue & _u;

  const ADVariableGradient & _grad_u;

  const ADVariableValue & _u_neighbor;

  const ADVariableGradient & _grad_u_neighbor;
};