gridfacevariables.hh

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#ifndef DUMUX_DISCRETIZATION_STAGGERED_GRID_FACEVARIABLES_HH
#define DUMUX_DISCRETIZATION_STAGGERED_GRID_FACEVARIABLES_HH

#include <dumux/discretization/localview.hh>
#include <dumux/discretization/staggered/elementfacevariables.hh>
 
namespace Dumux {

template<class P, class FV>
struct StaggeredDefaultGridFaceVariablesTraits
{
    template<class GridFaceVariables, bool enableCache>
    using LocalView = StaggeredElementFaceVariables<GridFaceVariables, enableCache>;
 
    using FaceVariables = FV;
    using Problem = P;
};

template<class Problem,
         class FaceVariables,
         bool cachingEnabled = false,
         class Traits = StaggeredDefaultGridFaceVariablesTraits<Problem, FaceVariables> >
class StaggeredGridFaceVariables;

template<class P, class FV, class Traits>
class StaggeredGridFaceVariables<P, FV, /*cachingEnabled*/true, Traits>
{
    using ThisType = StaggeredGridFaceVariables<P, FV, /*cachingEnabled*/true, Traits>;
    using Problem = typename Traits::Problem;
 
public:
    static constexpr bool cachingEnabled = true;

    using LocalView = typename Traits::template LocalView<ThisType, cachingEnabled>;

    using FaceVariables = typename Traits::FaceVariables;
 
    StaggeredGridFaceVariables(const Problem& problem) : problemPtr_(&problem) {}

    template<class GridGeometry, class SolutionVector>
    void update(const GridGeometry& gridGeometry, const SolutionVector& faceSol)
    {
 
        faceVariables_.resize(gridGeometry.numScvf());
 
        for(auto&& element : elements(gridGeometry.gridView()))
        {
            auto fvGeometry = localView(gridGeometry);
            fvGeometry.bindElement(element);
 
            for(auto&& scvf : scvfs(fvGeometry))
            {
                faceVariables_[scvf.index()].update(faceSol, problem(), element, fvGeometry, scvf);
            }
        }
    }
 
    const FaceVariables& faceVars(const std::size_t facetIdx) const
    { return faceVariables_[facetIdx]; }
 
    FaceVariables& faceVars(const std::size_t facetIdx)
    { return faceVariables_[facetIdx]; }
 
    const Problem& problem() const
    { return *problemPtr_; }
 
private:
    const Problem* problemPtr_;
    std::vector<FaceVariables> faceVariables_;
};

template<class P, class FV, class Traits>
class StaggeredGridFaceVariables<P, FV, /*cachingEnabled*/false, Traits>
{
    using ThisType = StaggeredGridFaceVariables<P, FV, /*cachingEnabled*/false, Traits>;
    using Problem = typename Traits::Problem;
 
public:
    static constexpr bool cachingEnabled = false;

    using LocalView = typename Traits::template LocalView<ThisType, cachingEnabled>;

    using FaceVariables = typename Traits::FaceVariables;
 
    StaggeredGridFaceVariables(const Problem& problem) : problemPtr_(&problem) {}

    template<class GridGeometry, class SolutionVector>
    void update(const GridGeometry& gridGeometry, const SolutionVector& sol) {}
 
    const Problem& problem() const
    { return *problemPtr_; }
 
private:
    const Problem* problemPtr_;
};
 
} // end namespace Dumux
 
#endif