polynomial.H

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    Copyright (C) 2015-2018 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
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Class
    Foam::saturationModels::polynomial
 
Description
    Polynomial equation for the saturation vapour temperature in terms of
    the vapour pressure (in Pa).
 
    \f[
        T_sat = \sum_i C_i p^i
    \f]
 
    where \f$p\f$ is the pressure in Pa and \f$C\f$ are the coefficients.
 
    Currently this class only provides \f$T_sat\f$, the inverse function to
    return the vapour pressure for a given temperature are not implemented.
 
SourceFiles
    polynomial.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef saturationModels_polynomial_H
#define saturationModels_polynomial_H
 
#include "saturationModel.H"
#include "Polynomial.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace saturationModels
{
 
/*---------------------------------------------------------------------------*\
                         Class polynomial Declaration
\*---------------------------------------------------------------------------*/
 
class polynomial
:
    public saturationModel
{
    // Private data
 
        //- Polynomial coefficients
        Polynomial<8> C_;
 
 
public:
 
    //- Runtime type information
    TypeName("polynomial");
 
    // Constructors
 
        //- Construct from a dictionary
        polynomial(const dictionary& dict, const objectRegistry& db);
 
 
    //- Destructor
    virtual ~polynomial();
 
 
    // 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
 
// ************************************************************************* //