NSRDSfunc2.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
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-------------------------------------------------------------------------------
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
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    for more details.
 
    You should have received a copy of the GNU General Public License
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Class
    Foam::NSRDSfunc2
 
Description
    NSRDS function number 102
 
    Source:
    \verbatim
                      NSRDS - AICHE
                 Data Compilation Tables
                    of Properties of
                     Pure Compounds
 
        Design Institute for Physical Property Data
          American Institute of Chemical Engineers
                  345 East 47th Street
                New York, New York 10017
 
         National Standard Reference Data System
         American Institute of Chemical Engineers
 
          T.E. Daubert       -       R.P. Danner
 
            Department of Chemical Engineering
            The Pennsylvania State University
                University Park, PA 16802
    \endverbatim
 
\*---------------------------------------------------------------------------*/
 
#ifndef NSRDSfunc2_H
#define NSRDSfunc2_H
 
#include "thermophysicalFunction.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class NSRDSfunc2 Declaration
\*---------------------------------------------------------------------------*/
 
class NSRDSfunc2
:
    public thermophysicalFunction
{
    // Private data
 
        // NSRDS function 102 coefficients
        scalar a_, b_, c_, d_;
 
 
public:
 
    //- Runtime type information
    TypeName("NSRDSfunc2");
 
 
    // Constructors
 
        //- Construct from components
        NSRDSfunc2
        (
            const scalar a,
            const scalar b,
            const scalar c,
            const scalar d
        );
 
        //- Construct from Istream
        NSRDSfunc2(Istream& is);
 
        //- Construct from dictionary
        NSRDSfunc2(const dictionary& dict);
 
 
    // Member Functions
 
        //- Evaluate the function and return the result
        scalar f(scalar, scalar T) const
        {
            return a_*pow(T, b_)/(1.0 + c_/T + d_/sqr(T));
        }
 
        //- Write the function coefficients
        void writeData(Ostream& os) const
        {
            os  << a_ << token::SPACE
                << b_ << token::SPACE
                << c_ << token::SPACE
                << d_;
        }
 
 
    // Ostream Operator
 
        friend Ostream& operator<<(Ostream& os, const NSRDSfunc2& f)
        {
            f.writeData(os);
            return os;
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //