Boussinesq.H

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/*---------------------------------------------------------------------------*\
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    \\  /    A nd           | Copyright (C) 2015-2016 OpenFOAM Foundation
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    You should have received a copy of the GNU General Public License
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Class
    Foam::Boussinesq

Description
    Incompressible gas equation of state using the Boussinesq approximation for
    the density as a function of temperature only:

    \verbatim
        rho = rho0*(1 - beta*(T - T0))
    \endverbatim

SourceFiles
    BoussinesqI.H
    Boussinesq.C

\*---------------------------------------------------------------------------*/

#ifndef Boussinesq_H
#define Boussinesq_H

#include "autoPtr.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// Forward declaration of friend functions and operators

template<class Specie> class Boussinesq;

template<class Specie>
inline Boussinesq<Specie> operator+
(
    const Boussinesq<Specie>&,
    const Boussinesq<Specie>&
);

template<class Specie>
inline Boussinesq<Specie> operator-
(
    const Boussinesq<Specie>&,
    const Boussinesq<Specie>&
);

template<class Specie>
inline Boussinesq<Specie> operator*
(
    const scalar,
    const Boussinesq<Specie>&
);

template<class Specie>
inline Boussinesq<Specie> operator==
(
    const Boussinesq<Specie>&,
    const Boussinesq<Specie>&
);

template<class Specie>
Ostream& operator<<
(
    Ostream&,
    const Boussinesq<Specie>&
);


/*---------------------------------------------------------------------------*\
                    Class Boussinesq Declaration
\*---------------------------------------------------------------------------*/

template<class Specie>
class Boussinesq
:
    public Specie
{
    // Private data

        //- Reference density
        scalar rho0_;

        //- Reference temperature
        scalar T0_;

        //- Thermal expansion coefficient
        scalar beta_;


public:

    // Constructors

        //- Construct from components
        inline Boussinesq
        (
            const Specie& sp,
            const scalar rho0,
            const scalar T0,
            const scalar beta
        );

        //- Construct from Boussinesq
        inline Boussinesq(const Boussinesq& sp);

        //- Construct from Istream
        Boussinesq(Istream&);

        //- Construct from dictionary
        Boussinesq(const dictionary& dict);

        //- Construct as named copy
        inline Boussinesq
        (
            const word& name,
            const Boussinesq&
        );

        //- Construct and return a clone
        inline autoPtr<Boussinesq> clone() const;

        // Selector from Istream
        inline static autoPtr<Boussinesq> New(Istream& is);

        // Selector from dictionary
        inline static autoPtr<Boussinesq> New
        (
            const dictionary& dict
        );


    // Member functions

        //- Return the instantiated type name
        static word typeName()
        {
            return
                "Boussinesq<"
              + 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 departure [J/kmol]
            inline scalar h(const scalar p, const scalar T) const;

            //- Return cp departure [J/(kmol K]
            inline scalar cp(scalar p, scalar T) const;

            //- Return entropy [J/(kmol K)]
            inline scalar s(const scalar p, const scalar T) const;

            //- Return compressibility rho/p [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/(kmol K]
            inline scalar cpMcv(scalar p, scalar T) const;


        // IO

            //- Write to Ostream
            void write(Ostream& os) const;


    // Member operators

        inline void operator=(const Boussinesq&);
        inline void operator+=(const Boussinesq&);
        inline void operator-=(const Boussinesq&);

        inline void operator*=(const scalar);


    // Friend operators

        friend Boussinesq operator+ <Specie>
        (
            const Boussinesq&,
            const Boussinesq&
        );

        friend Boussinesq operator- <Specie>
        (
            const Boussinesq&,
            const Boussinesq&
        );

        friend Boussinesq operator* <Specie>
        (
            const scalar s,
            const Boussinesq&
        );

        friend Boussinesq operator== <Specie>
        (
            const Boussinesq&,
            const Boussinesq&
        );


    // Ostream Operator

        friend Ostream& operator<< <Specie>
        (
            Ostream&,
            const Boussinesq&
        );
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "BoussinesqI.H"

#ifdef NoRepository
    #include "Boussinesq.C"
#endif

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //