ploteffectivediffusivitymodel.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_PLOT_EFFECTIVE_DIFFUSIVITY_MODEL_HH
#define DUMUX_PLOT_EFFECTIVE_DIFFUSIVITY_MODEL_HH
 
#include <string>
#include <vector>
 
namespace Dumux {
 
// forward declaration
template<class Scalar> class GnuplotInterface;
 
template<class Scalar, class EffectiveDiffusivityModel>
class PlotEffectiveDiffusivityModel
{
public:
    PlotEffectiveDiffusivityModel()
    : numIntervals_(1000)
    { }
 
    void adddeffcurve(GnuplotInterface<Scalar> &gnuplot,
                      Scalar porosity,
                      Scalar diffCoeff,
                      Scalar lowerSat = 0.0,
                      Scalar upperSat = 1.0,
                      std::string curveName = "deff",
                      std::string curveOptions = "w l")
    {
        std::vector<Scalar> sw(numIntervals_+1);
        std::vector<Scalar> deff(numIntervals_+1);
        Scalar satInterval = upperSat - lowerSat;
 
        for (int i = 0; i <= numIntervals_; i++)
        {
            sw[i] = lowerSat + satInterval * Scalar(i) / Scalar(numIntervals_);
            VolumeVariables volVars(sw[i], porosity, diffCoeff);
            deff[i] = EffectiveDiffusivityModel::effectiveDiffusionCoefficient(volVars, 0, 0, 1);
        }
 
        gnuplot.addDataSetToPlot(sw, deff, curveName, curveOptions);
    }
 
    Scalar getEffectiveDiffusionCoefficient(Scalar saturation,
                                            Scalar porosity,
                                            Scalar diffCoeff) const
    {
        VolumeVariables volVars(saturation, porosity, diffCoeff);
        return EffectiveDiffusivityModel::effectiveDiffusionCoefficient(volVars, 0, 0, 1);
    }
 
private:
 
    class VolumeVariables
    {
    public:
        VolumeVariables(Scalar saturation, Scalar porosity, Scalar diffCoeff)
        : saturation_(saturation)
        , porosity_(porosity)
        , diffCoeff_(diffCoeff)
        {}
 
        Scalar saturation(int phaseIdx = 0) const
        { return saturation_; }
 
        Scalar porosity() const
        { return porosity_; }
 
        Scalar diffusionCoefficient(const int phaseIdx, const int compIdxI, const int compIdxJ) const
        { return diffCoeff_;}
 
    private:
        Scalar saturation_;
        Scalar porosity_;
        Scalar diffCoeff_;
    };
 
    int numIntervals_;
};
 
} // end namespace Dumux
 
#endif