incompressiblePerfectGas.H

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Class
    Foam::incompressiblePerfectGas
 
Description
    Incompressible gas equation of state using a constant reference pressure in
    the perfect gas equation of state rather than the local pressure so that the
    density only varies with temperature:
 
    \verbatim
        rho = pRef/(R*T)
    \endverbatim
 
Usage
    \table
        Property     | Description
        pRef         | Reference pressure
    \endtable
 
    Example specification of the incompressiblePerfectGas equation of state:
    \verbatim
    equationOfState
    {
        pRef        1e5;
    }
    \endverbatim
 
SourceFiles
    incompressiblePerfectGasI.H
    incompressiblePerfectGas.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef incompressiblePerfectGas_H
#define incompressiblePerfectGas_H
 
#include "autoPtr.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration of friend functions and operators
 
template<class Specie> class incompressiblePerfectGas;
 
template<class Specie>
inline incompressiblePerfectGas<Specie> operator+
(
    const incompressiblePerfectGas<Specie>&,
    const incompressiblePerfectGas<Specie>&
);
 
template<class Specie>
inline incompressiblePerfectGas<Specie> operator*
(
    const scalar,
    const incompressiblePerfectGas<Specie>&
);
 
template<class Specie>
inline incompressiblePerfectGas<Specie> operator==
(
    const incompressiblePerfectGas<Specie>&,
    const incompressiblePerfectGas<Specie>&
);
 
template<class Specie>
Ostream& operator<<
(
    Ostream&,
    const incompressiblePerfectGas<Specie>&
);
 
 
/*---------------------------------------------------------------------------*\
                  Class incompressiblePerfectGas Declaration
\*---------------------------------------------------------------------------*/
 
template<class Specie>
class incompressiblePerfectGas
:
    public Specie
{
    // Private Data
 
        //- Reference pressure
        scalar pRef_;
 
 
public:
 
    // Constructors
 
        //- Construct from components
        inline incompressiblePerfectGas(const Specie& sp, const scalar pRef);
 
        //- Construct from name and dictionary
        incompressiblePerfectGas(const word& name, const dictionary& dict);
 
        //- Construct as named copy
        inline incompressiblePerfectGas
        (
            const word& name,
            const incompressiblePerfectGas&
        );
 
        //- Construct and return a clone
        inline autoPtr<incompressiblePerfectGas> clone() const;
 
 
    // Member Functions
 
        //- Return the instantiated type name
        static word typeName()
        {
            return
                "incompressiblePerfectGas<"
              + word(Specie::typeName_()) + '>';
        }
 
 
        // Fundamental properties
 
            //- Is the equation of state is incompressible i.e. rho != f(p)
            static const bool incompressible = true;
 
            //- Is the equation of state is isochoric i.e. rho = const
            static const bool isochoric = false;
 
            //- Return density [kg/m^3]
            inline scalar rho(scalar p, scalar T) const;
 
            //- Return enthalpy contribution [J/kg]
            inline scalar H(const scalar p, const scalar T) const;
 
            //- Return Cp contribution [J/(kg K]
            inline scalar Cp(scalar p, scalar T) const;
 
            //- Return internal energy contribution [J/kg]
            inline scalar E(const scalar p, const scalar T) const;
 
            //- Return Cv contribution [J/(kg K]
            inline scalar Cv(scalar p, scalar T) const;
 
            //- Return entropy contribution to the integral of Cp/T [J/kg/K]
            inline scalar Sp(const scalar p, const scalar T) const;
 
            //- Return entropy contribution to the integral of Cv/T [J/kg/K]
            inline scalar Sv(const scalar p, const scalar T) const;
 
            //- Return compressibility [s^2/m^2]
            inline scalar psi(scalar p, scalar T) const;
 
            //- Return compression factor []
            inline scalar Z(scalar p, scalar T) const;
 
            //- Return (Cp - Cv) [J/(kg K]
            inline scalar CpMCv(scalar p, scalar T) const;
 
            //- Return volumetric coefficient of thermal expansion [1/T]
            inline scalar alphav(const scalar p, const scalar T) const;
 
 
        // IO
 
            //- Write to Ostream
            void write(Ostream& os) const;
 
 
    // Member Operators
 
        inline void operator+=(const incompressiblePerfectGas&);
        inline void operator*=(const scalar);
 
 
    // Friend operators
 
        friend incompressiblePerfectGas operator+ <Specie>
        (
            const incompressiblePerfectGas&,
            const incompressiblePerfectGas&
        );
 
        friend incompressiblePerfectGas operator* <Specie>
        (
            const scalar s,
            const incompressiblePerfectGas&
        );
 
        friend incompressiblePerfectGas operator== <Specie>
        (
            const incompressiblePerfectGas&,
            const incompressiblePerfectGas&
        );
 
 
    // Ostream Operator
 
        friend Ostream& operator<< <Specie>
        (
            Ostream&,
            const incompressiblePerfectGas&
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "incompressiblePerfectGasI.H"
 
#ifdef NoRepository
    #include "incompressiblePerfectGas.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //