/*---------------------------------------------------------------------------*\
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    Copyright (C) 2015-2018 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

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Class
    Foam::saturationModels::Antoine

Description
    Antoine equation for the vapour pressure.

    \f[
        \log p = A + \frac{B}{C + T}
    \f]

    Coefficients \f$A\f$, \f$B\f$ and \f$C\f$ are to be supplied and should be
    suitable for natural logarithms and temperatures in Kelvin.

SourceFiles
    Antoine.C

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

#ifndef Antoine_H
#define Antoine_H

#include "saturationModel.H"

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

namespace Foam
{
namespace saturationModels
{

/*---------------------------------------------------------------------------*\
                         Class Antoine Declaration
\*---------------------------------------------------------------------------*/

class Antoine
:
    public saturationModel
{
protected:

    // Protected data

        //- Constant A
        dimensionedScalar A_;

        //- Constant B
        dimensionedScalar B_;

        //- Constant C
        dimensionedScalar C_;


public:

    //- Runtime type information
    TypeName("Antoine");

    // Constructors

        //- Construct from a dictionary
        Antoine(const dictionary& dict, const objectRegistry& db);


    //- Destructor
    virtual ~Antoine();


    // Member Functions

        //- Saturation pressure
        virtual tmp<volScalarField> pSat(const volScalarField& T) const;

        //- Saturation pressure derivetive w.r.t. temperature
        virtual tmp<volScalarField> pSatPrime(const volScalarField& T) const;

        //- Natural log of the saturation pressure
        virtual tmp<volScalarField> lnPSat(const volScalarField& T) const;

        //- Saturation temperature
        virtual tmp<volScalarField> Tsat(const volScalarField& p) const;
};


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

} // End namespace saturationModels
} // End namespace Foam

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

#endif

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