ADInterfaceKernel.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 "InterfaceKernelBase.h"

template <typename T>
class ADInterfaceKernelTempl : public InterfaceKernelBase, public NeighborMooseVariableInterface<T>
{
public:
  static InputParameters validParams();

  ADInterfaceKernelTempl(const InputParameters & parameters);

  const MooseVariableFE<T> & variable() const override { return _var; }

  const MooseVariableFE<T> & neighborVariable() const override { return _neighbor_var; }

private:
  void computeElemNeighResidual(Moose::DGResidualType type);

  void computeElemNeighJacobian(Moose::DGJacobianType type);

  void computeOffDiagElemNeighJacobian(Moose::DGJacobianType type, unsigned int jvar);

  virtual void computeElementOffDiagJacobian(unsigned int jvar) override final;

  virtual void computeNeighborOffDiagJacobian(unsigned int jvar) override final;

  void computeResidual() override final;

  void computeJacobian() override final;

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

  virtual void initQpResidual(Moose::DGResidualType /* type */) {}

  MooseVariableFE<T> & _var;

  const MooseArray<Point> & _normals;

  const ADTemplateVariableValue<T> & _u;

  const ADTemplateVariableGradient<T> & _grad_u;

  const MooseArray<ADReal> & _ad_JxW;

  const MooseArray<ADReal> & _ad_coord;

  const MooseArray<ADPoint> & _ad_q_point;

  const typename OutputTools<T>::VariablePhiValue & _phi;

  const typename OutputTools<T>::VariableTestValue & _test;

  const ADTemplateVariableTestGradient<T> & _grad_test;

  const MooseVariableFE<T> & _neighbor_var;

  const ADTemplateVariableValue<T> & _neighbor_value;

  const ADTemplateVariableGradient<T> & _grad_neighbor_value;

  const typename OutputTools<T>::VariablePhiValue & _phi_neighbor;

  const typename OutputTools<T>::VariableTestValue & _test_neighbor;

  const typename OutputTools<T>::VariableTestGradient & _grad_test_neighbor;

  DenseMatrix<Number> _local_kxx;

private:
  Moose::DGResidualType resid_type;
};

typedef ADInterfaceKernelTempl<Real> ADInterfaceKernel;
typedef ADInterfaceKernelTempl<RealVectorValue> ADVectorInterfaceKernel;