idealgas.hh

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#ifndef DUMUX_IDEAL_GAS_HH
#define DUMUX_IDEAL_GAS_HH
 
#include <dumux/material/constants.hh>
 
namespace Dumux {

template <class Scalar>
class IdealGas
{
public:
    static constexpr Scalar R = Constants<Scalar>::R;

    static constexpr Scalar density(Scalar avgMolarMass,
                                    Scalar temperature,
                                    Scalar pressure)
    { return molarDensity(temperature,pressure)*avgMolarMass;}

    static constexpr Scalar pressure(Scalar temperature,
                                     Scalar rhoMolar)
    { return R*temperature*rhoMolar; }

    static constexpr Scalar molarDensity(Scalar temperature,
                                         Scalar pressure)
    { return pressure/(R*temperature); }
};
} // end namespace
 
#endif