h2n2co2fluidsystem.hh

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#ifndef DUMUX_THREE_GAS_COMPONENT_FLUID_SYSTEM_HH
#define DUMUX_THREE_GAS_COMPONENT_FLUID_SYSTEM_HH
 
#include <dumux/material/fluidsystems/base.hh>
 
namespace Dumux {
namespace FluidSystems {
template<class Scalar>
class H2N2CO2FluidSystem: public Base<Scalar, H2N2CO2FluidSystem<Scalar>>
 
{
    using ThisType = H2N2CO2FluidSystem<Scalar>;
    using Base = FluidSystems::Base<Scalar, ThisType>;
 
public:
    static constexpr int numPhases = 1;
    static constexpr int numComponents = 3;
 
    static constexpr int H2Idx = 0;//first major component
    static constexpr int N2Idx = 1;//second major component
    static constexpr int CO2Idx = 2;//secondary component
 
    static std::string componentName(int compIdx)
    {
        switch (compIdx)
        {
            case H2Idx: return "H2";
            case N2Idx: return "N2";
            case CO2Idx: return "CO2";
        }
        DUNE_THROW(Dune::InvalidStateException, "Invalid compIdx index " << compIdx);
    }
 
    static std::string phaseName(int phaseIdx = 0)
    { return "Gas"; }
 
    static Scalar molarMass(unsigned int compIdx)
    { return 0.02896; }
 
 
    using Base::binaryDiffusionCoefficient;
    template <class FluidState>
    static Scalar binaryDiffusionCoefficient(const FluidState &fluidState,
                                             int phaseIdx,
                                             int compIIdx,
                                             int compJIdx)
    {
        if (compIIdx > compJIdx)
        {
            using std::swap;
            swap(compIIdx, compJIdx);
        }
 
        if (compIIdx == H2Idx && compJIdx == N2Idx)
                return 83.3e-6;
        if (compIIdx == H2Idx && compJIdx == CO2Idx)
                return 68.0e-6;
        if (compIIdx == N2Idx && compJIdx == CO2Idx)
                return 16.8e-6;
        DUNE_THROW(Dune::InvalidStateException,
                       "Binary diffusion coefficient of components "
                       << compIIdx << " and " << compJIdx << " is undefined!\n");
    }
    using Base::density;
    template <class FluidState>
    static Scalar density(const FluidState &fluidState,
                          const int phaseIdx)
    {
      return 1;
    }
 
    using Base::viscosity;
    template <class FluidState>
    static Scalar viscosity(const FluidState &fluidState,
                            int phaseIdx)
    {
        return 1e-6;
    }
 
    using Base::molarDensity;
    template <class FluidState>
    static Scalar molarDensity(const FluidState &fluidState, int phaseIdx)
    {
        return density(fluidState, phaseIdx)/molarMass(0);
    }
};
 
} // end namespace FluidSystems
} // end namespace Dumux
 
 
#endif