boxmaterialinterfaceparams.hh

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#ifndef DUMUX_2P_BOX_MATERIAL_INTERFACE_PARAMS_HH
#define DUMUX_2P_BOX_MATERIAL_INTERFACE_PARAMS_HH
 
#include <dune/common/exceptions.hh>
 
#include <dumux/discretization/method.hh>
#include <dumux/discretization/box/elementsolution.hh>
 
namespace Dumux {
 
template<class SpatialParams>
class BoxMaterialInterfaceParams
{
public:
    using MaterialLawParams = typename SpatialParams::MaterialLaw::Params;
 
    template<class GridGeometry, class SolutionVector>
    void update(const GridGeometry& gridGeometry,
                const SpatialParams& spatialParams,
                const SolutionVector& x)
    {
        using MaterialLaw = typename SpatialParams::MaterialLaw;
 
        // Make sure the spatial params return a const ref and no copy!
        using Elem = typename GridGeometry::GridView::template Codim<0>::Entity;
        using ElemSol = decltype( elementSolution(Elem(), x, gridGeometry) );
        using Scv = typename GridGeometry::SubControlVolume;
        using ReturnType = decltype(spatialParams.materialLawParams(Elem(), Scv(), ElemSol()));
        static_assert(std::is_lvalue_reference<ReturnType>::value,
                      "In order to use the box-interface solver please provide access "
                      "to the material law parameters via returning (const) references");
 
        // make sure this is only called for geometries of the box method!
        if (GridGeometry::discMethod != DiscretizationMethod::box)
            DUNE_THROW(Dune::InvalidStateException, "Determination of the interface material parameters with "
                                                    "this class only makes sense when using the box method!");
 
        isUpdated_ = true;
        isOnMaterialInterface_.resize(gridGeometry.numDofs(), false);
        dofParams_.resize(gridGeometry.numDofs(), nullptr);
        for (const auto& element : elements(gridGeometry.gridView()))
        {
            const auto elemSol = elementSolution(element, x, gridGeometry);
 
            auto fvGeometry = localView(gridGeometry);
            fvGeometry.bind(element);
            for (const auto& scv : scvs(fvGeometry))
            {
                const auto& params = spatialParams.materialLawParams(element, scv, elemSol);
 
                // if no parameters had been set, set them now
                if (dofParams_[scv.dofIndex()] == nullptr)
                    dofParams_[scv.dofIndex()] = &params;
 
                // otherwise only use the current ones if endPointPc (e.g. Brooks-Corey entry pressure) is lower
                else if (MaterialLaw::endPointPc( params ) < MaterialLaw::endPointPc( *(dofParams_[scv.dofIndex()]) ))
                {
                    dofParams_[scv.dofIndex()] = &params;
                    isOnMaterialInterface_[scv.dofIndex()] = true;
                }
 
                // keep track of material interfaces in any case
                else if ( !(params == *(dofParams_[scv.dofIndex()])) )
                    isOnMaterialInterface_[scv.dofIndex()] = true;
            }
        }
    }
 
    template<class Scv>
    bool isOnMaterialInterface(const Scv& scv) const
    { assert(isUpdated_); return isOnMaterialInterface_[scv.dofIndex()]; }
 
    template<class Scv>
    const MaterialLawParams& getDofParams(const Scv& scv) const
    { assert(isUpdated_); return *(dofParams_[scv.dofIndex()]); }
 
private:
    bool isUpdated_{false};
    std::vector<bool> isOnMaterialInterface_;
    std::vector<const MaterialLawParams*> dofParams_;
};
 
} // end namespace Dumux
 
#endif