mpfa/computetransmissibility.hh

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#ifndef DUMUX_DISCRETIZATION_CC_MPFA_COMPUTE_TRANSMISSIBILITY_HH
#define DUMUX_DISCRETIZATION_CC_MPFA_COMPUTE_TRANSMISSIBILITY_HH
 
#include <dune/common/typetraits.hh>
#include <dune/common/fvector.hh>
 
#include <dumux/common/math.hh>
#include <dumux/discretization/extrusion.hh>
 
namespace Dumux {
 
template<class EG, class IVSubControlVolume, class Tensor>
Dune::FieldVector<typename Tensor::field_type, IVSubControlVolume::myDimension>
computeMpfaTransmissibility(const IVSubControlVolume& scv,
                            const typename EG::SubControlVolumeFace& scvf,
                            const Tensor& t,
                            typename IVSubControlVolume::ctype extrusionFactor)
{
    Dune::FieldVector<typename Tensor::field_type, IVSubControlVolume::myDimension> wijk;
    for (unsigned int dir = 0; dir < IVSubControlVolume::myDimension; ++dir)
        wijk[dir] = vtmv(scvf.unitOuterNormal(), t, scv.nu(dir));
 
    using Extrusion = Extrusion_t<typename EG::GridGeometry>;
    wijk *= Extrusion::area(scvf)*extrusionFactor;
    wijk /= scv.detX();
 
    return wijk;
}
 
template< class EG, class IVSubControlVolume, class Tensor, std::enable_if_t< Dune::IsNumber<Tensor>::value, int > = 1 >
Dune::FieldVector<Tensor, IVSubControlVolume::myDimension>
computeMpfaTransmissibility(const IVSubControlVolume& scv,
                            const typename EG::SubControlVolumeFace& scvf,
                            const Tensor& t,
                            typename IVSubControlVolume::ctype extrusionFactor)
{
    Dune::FieldVector<Tensor, IVSubControlVolume::myDimension> wijk;
    for (unsigned int dir = 0; dir < IVSubControlVolume::myDimension; ++dir)
        wijk[dir] = vtmv(scvf.unitOuterNormal(), t, scv.nu(dir));
 
    using Extrusion = Extrusion_t<typename EG::GridGeometry>;
    wijk *= Extrusion::area(scvf)*extrusionFactor;
    wijk /= scv.detX();
 
    return wijk;
}
 
} // end namespace Dumux
 
#endif