saturationreconstruction.hh

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#ifndef DUMUX_2P_SCV_SATURATION_RECONSTRUCTION_HH
#define DUMUX_2P_SCV_SATURATION_RECONSTRUCTION_HH
 
#include <dumux/discretization/method.hh>
 
namespace Dumux {
 
template<class DiscretizationMethod, bool enableReconstruction>
class TwoPScvSaturationReconstruction
{
public:
    template<class SpatialParams, class Element, class Scv, class ElemSol>
    static typename ElemSol::PrimaryVariables::value_type
    reconstructSn(const SpatialParams& spatialParams,
                  const Element& element,
                  const Scv& scv,
                  const ElemSol& elemSol,
                  typename ElemSol::PrimaryVariables::value_type sn)
    { return sn; }
};
 
template<>
class TwoPScvSaturationReconstruction<DiscretizationMethods::Box, /*enableReconstruction*/true>
{
public:
    template<class SpatialParams, class Element, class Scv, class ElemSol>
    static typename ElemSol::PrimaryVariables::value_type
    reconstructSn(const SpatialParams& spatialParams,
                  const Element& element,
                  const Scv& scv,
                  const ElemSol& elemSol,
                  typename ElemSol::PrimaryVariables::value_type sn)
    {
        // if this dof doesn't lie on a material interface, simply return Sn
        const auto& materialInterfaces = spatialParams.materialInterfaces();
        if (!materialInterfaces.isOnMaterialInterface(scv))
            return sn;
 
        // compute capillary pressure using material parameters associated with the dof
        const auto& interfacePcSw = materialInterfaces.pcSwAtDof(scv);
        const auto pc = interfacePcSw.pc(/*ww=*/1.0 - sn);
 
        // reconstruct by inverting the pc-sw curve
        const auto& pcSw = spatialParams.fluidMatrixInteraction(element, scv, elemSol).pcSwCurve();
        const auto pcMin = pcSw.endPointPc();
 
        if (pc < pcMin && pcMin > 0.0)
            return 0.0;
        else
            return 1.0 - pcSw.sw(pc);
    }
};
 
} // end namespace Dumux
 
#endif