SideDiffusiveFluxIntegral.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

// MOOSE includes
#include "SideIntegralVariablePostprocessor.h"

// Forward Declarations
template <bool, typename>
class SideDiffusiveFluxIntegralTempl;
typedef SideDiffusiveFluxIntegralTempl<false, Real> SideDiffusiveFluxIntegral;
typedef SideDiffusiveFluxIntegralTempl<true, Real> ADSideDiffusiveFluxIntegral;
typedef SideDiffusiveFluxIntegralTempl<false, RealVectorValue> SideVectorDiffusivityFluxIntegral;
typedef SideDiffusiveFluxIntegralTempl<true, RealVectorValue> ADSideVectorDiffusivityFluxIntegral;

template <bool is_ad, typename T>
class SideDiffusiveFluxIntegralTempl : public SideIntegralVariablePostprocessor
{
public:
  static InputParameters validParams();

  SideDiffusiveFluxIntegralTempl(const InputParameters & parameters);

protected:
  Real computeQpIntegral() override;
  Real computeFaceInfoIntegral(const FaceInfo * fi) override;

  const GenericMaterialProperty<T, is_ad> * const _diffusion_coef;
  const Moose::Functor<Moose::GenericType<T, is_ad>> * const _functor_diffusion_coef;

private:
  RealVectorValue diffusivityGradientProduct(const RealVectorValue & grad_u, Real diffusivity);

  RealVectorValue diffusivityGradientProduct(const RealVectorValue & grad_u,
                                             const RealVectorValue & diffusivity);
};