h2o_n2.hh

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#ifndef DUMUX_BINARY_COEFF_H2O_N2_HH
#define DUMUX_BINARY_COEFF_H2O_N2_HH
 
#include "henryiapws.hh"
#include "fullermethod.hh"
 
#include <dumux/material/components/n2.hh>
#include <dumux/material/components/h2o.hh>
 
namespace Dumux {
namespace BinaryCoeff {

class H2O_N2
{
public:
    template <class Scalar>
    static Scalar henry(Scalar temperature)
    {
        const Scalar E = 2388.8777;
        const Scalar F = -14.9593;
        const Scalar G = 42.0179;
        const Scalar H = -29.4396;
 
        return henryIAPWS(E, F, G, H, temperature);
    }

    template <class Scalar>
    static Scalar gasDiffCoeff(Scalar temperature, Scalar pressure)
    {
        using H2O = Dumux::Components::H2O<Scalar>;
        using N2 = Dumux::Components::N2<Scalar>;
 
        // atomic diffusion volumes
        const Scalar SigmaNu[2] = { 13.1 /* H2O */,  18.5 /* N2 */ };
        // molar masses [g/mol]
        const Scalar M[2] = { H2O::molarMass()*Scalar(1e3), N2::molarMass()*Scalar(1e3) };
 
        return fullerMethod(M, SigmaNu, temperature, pressure);
    }

    template <class Scalar>
    static Scalar liquidDiffCoeff(Scalar temperature, Scalar pressure)
    {
        const Scalar Texp = 273.15 + 25; // [K]
        const Scalar Dexp = 2.01e-9; // [m^2/s]
 
        return Dexp * temperature/Texp;
    }
};
 
} // end namespace BinaryCoeff
} // end namespace Dumux
 
#endif