NSRDS14.H

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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
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Class
    Foam::Function1s::NSRDS14
 
Description
    NSRDS function number 114
 
    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 NSRDS14_H
#define NSRDS14_H
 
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Function1s
{
 
/*---------------------------------------------------------------------------*\
                           Class NSRDS14 Declaration
\*---------------------------------------------------------------------------*/
 
class NSRDS14
:
    public FieldFunction1<scalar, NSRDS14>
{
    // Private Data
 
        // NSRDS function 114 coefficients
        scalar Tc_, a_, b_, c_, d_;
 
 
public:
 
    //- Runtime type information
    TypeName("NSRDS14");
 
 
    // Constructors
 
        //- Construct from components
        NSRDS14
        (
            const word& name,
            const scalar Tc,
            const scalar a,
            const scalar b,
            const scalar c,
            const scalar d
        );
 
        //- Construct from name and dictionary
        NSRDS14
        (
            const word& name,
            const unitConversions& units,
            const dictionary& dict
        );
 
        //- Construct and return a clone
        virtual tmp<Function1<scalar>> clone() const
        {
            return tmp<Function1<scalar>>(new NSRDS14(*this));
        }
 
 
    // Member Functions
 
        //- Evaluate the function and return the result
        virtual scalar value(scalar T) const
        {
            scalar Tdash = min(T, Tc_ - rootVSmall);
 
            scalar t = 1.0 - Tdash/Tc_;
            return
                a_*a_/(t + rootVSmall) + b_ - t
               *(
                   2.0*a_*c_
                 + t*(a_*d_ + t*(c_*c_/3.0 + t*(0.5*c_*d_ + 0.2*d_*d_*t)))
                );
        }
 
        //- Integrate between two scalar values
        virtual scalar integral(const scalar x1, const scalar x2) const;
 
        //- Write the function coefficients
        virtual void write(Ostream& os, const unitConversions& units) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Function1s
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //