efftoabsdefaultpolicy.hh

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
//
// SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef DUMUX_MATERIAL_FLUIDMATRIX_TWOP_EFF_TO_ABS_DEFAULT_POLICY_HH
#define DUMUX_MATERIAL_FLUIDMATRIX_TWOP_EFF_TO_ABS_DEFAULT_POLICY_HH
 
#include <dune/common/float_cmp.hh>
#include <dumux/common/parameters.hh>
 
namespace Dumux::FluidMatrix {
 
class TwoPEffToAbsDefaultPolicy
{
public:
    template<class Scalar>
    struct Params
    {
        Params(const Scalar swr = 0.0, const Scalar snr = 0.0)
        : swr_(swr), snr_(snr)
        {}
 
        Scalar swr() const
        { return swr_; }
 
        void setSwr(Scalar v)
        { swr_ = v; }
 
        Scalar snr() const
        { return snr_; }
 
        void setSnr(Scalar v)
        { snr_ = v; }
 
        bool operator== (const Params& p) const
        {
            return Dune::FloatCmp::eq(swr(), p.swr(), 1e-6)
                   && Dune::FloatCmp::eq(snr(), p.snr(), 1e-6);
        }
    private:
        Scalar swr_;
        Scalar snr_;
    };
 
    template<class Scalar>
    static Params<Scalar> makeParams(const std::string& paramGroup)
    {
        Params<Scalar> params;
        params.setSwr(getParamFromGroup<Scalar>(paramGroup, "Swr", 0.0));
        params.setSnr(getParamFromGroup<Scalar>(paramGroup, "Snr", 0.0));
        return params;
    }
 
    template<class Scalar>
    static Scalar swToSwe(const Scalar sw, const Params<Scalar>& params)
    {
        return (sw - params.swr())/(1.0 - params.swr() - params.snr());
    }
 
    template<class Scalar>
    static Scalar sweToSw(const Scalar swe, const Params<Scalar>& params)
    {
        return swe*(1.0 - params.swr() - params.snr()) + params.swr();
    }
 
    template<class Scalar>
    static Scalar dswe_dsw(const Params<Scalar>& params)
    {
        return 1.0/(1.0 - params.swr() - params.snr());
    }
 
    template<class Scalar>
    static Scalar dsw_dswe(const Params<Scalar>& params)
    {
        return 1.0 - params.swr() - params.snr();
    }
};
 
} // end namespace Dumux::FluidMatrix
 
#endif