porousmediumflow/2pnc/implicit/fuelcell/spatialparams.hh

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#ifndef DUMUX_FUELCELL_SPATIAL_PARAMS_HH
#define DUMUX_FUELCELL_SPATIAL_PARAMS_HH
 
#include <dumux/porousmediumflow/properties.hh>
#include <dumux/material/spatialparams/fv.hh>
#include <dumux/material/fluidmatrixinteractions/2p/linearmaterial.hh>
#include <dumux/material/fluidmatrixinteractions/2p/regularizedbrookscorey.hh>
#include <dumux/material/fluidmatrixinteractions/2p/regularizedvangenuchten.hh>
#include <dumux/material/fluidmatrixinteractions/2p/efftoabslaw.hh>
 
namespace Dumux {
template<class GridGeometry, class Scalar>
class FuelCellSpatialParams
: public FVSpatialParams<GridGeometry, Scalar,
                         FuelCellSpatialParams<GridGeometry, Scalar>>
{
    using GridView = typename GridGeometry::GridView;
    using ParentType = FVSpatialParams<GridGeometry, Scalar,
                                       FuelCellSpatialParams<GridGeometry, Scalar>>;
 
    static constexpr int dimWorld = GridView::dimensionworld;
 
    using Element = typename GridGeometry::GridView::template Codim<0>::Entity;
    using GlobalPosition = typename Element::Geometry::GlobalCoordinate;
 
    using DimWorldMatrix = Dune::FieldMatrix<Scalar, dimWorld, dimWorld>;
 
    using EffectiveLaw = RegularizedVanGenuchten<Scalar>;
 
public:
    using MaterialLaw = EffToAbsLaw<EffectiveLaw>;
    using MaterialLawParams = typename MaterialLaw::Params;
    using PermeabilityType = DimWorldMatrix;
 
    FuelCellSpatialParams(std::shared_ptr<const GridGeometry> gridGeometry)
    : ParentType(gridGeometry), K_(0)
    {
        // intrinsic permeabilities
        K_[0][0] = 5e-11;
        K_[1][1] = 5e-11;
 
        // porosities
        porosity_ = 0.2;
 
        // residual saturations
        materialParams_.setSwr(0.12); // air is wetting phase
        materialParams_.setSnr(0.0); // water is non-wetting
 
        //parameters for the vanGenuchten law
        materialParams_.setVgAlpha(6.66e-5); // alpha = 1/pcb
        materialParams_.setVgn(3.652);
    }
 
    DimWorldMatrix permeabilityAtPos(const GlobalPosition& globalPos) const
    { return K_; }
 
    Scalar porosityAtPos(const GlobalPosition& globalPos) const
    {
        if (globalPos[1] < eps_)
            return porosity_;
        else
            return 0.2;
    }
 
    const MaterialLawParams& materialLawParamsAtPos(const GlobalPosition& globalPos) const
    { return materialParams_; }
 
    template<class FluidSystem>
    int wettingPhaseAtPos(const GlobalPosition& globalPos) const
    { return FluidSystem::gasPhaseIdx; }
 
private:
    DimWorldMatrix K_;
    Scalar porosity_;
    static constexpr Scalar eps_ = 1e-6;
    MaterialLawParams materialParams_;
};
 
} // end namespace Dumux
 
#endif