fullermethod.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_FULLERMETHOD_HH
#define DUMUX_FULLERMETHOD_HH
 
#include <dumux/common/math.hh>
 
namespace Dumux {
namespace BinaryCoeff {
template <class Scalar>
inline Scalar fullerMethod(const Scalar *M, // molar masses [g/mol]
                           const Scalar *SigmaNu, // atomic diffusion volume
                           const Scalar temperature, // [K]
                           const Scalar pressure) // [Pa]
{
    // "effective" molar mass in [g/m^3]
    Scalar Mab = harmonicMean(M[0], M[1]);
 
    // Fuller's method
    using std::pow;
    using std::sqrt;
    Scalar tmp = pow(SigmaNu[0], 1./3) + pow(SigmaNu[1], 1./3);
    return 1e-4 * (143.0*pow(temperature, 1.75))/(pressure*sqrt(Mab)*tmp*tmp);
}
 
} // end namespace BinaryCoeff
} // end namespace Dumux
 
#endif