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NSRDSfunc5.H

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2005 OpenCFD Ltd.
00006      \\/     M anipulation  |
00007 -------------------------------------------------------------------------------
00008 License
00009     This file is part of OpenFOAM.
00010 
00011     OpenFOAM is free software; you can redistribute it and/or modify it
00012     under the terms of the GNU General Public License as published by the
00013     Free Software Foundation; either version 2 of the License, or (at your
00014     option) any later version.
00015 
00016     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
00017     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
00019     for more details.
00020 
00021     You should have received a copy of the GNU General Public License
00022     along with OpenFOAM; if not, write to the Free Software Foundation,
00023     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
00024 
00025 Class
00026     NSRDSfunc5
00027 
00028 Description
00029     NSRDS function number 105
00030 
00031     Source:
00032                       NSRDS - AICHE
00033                  Data Compilation Tables
00034                     of Properties of
00035                      Pure Compounds
00036 
00037         Design Institute for Physical Property Data
00038           American Institute of Chemical Engineers
00039                   345 East 47th Street
00040                 New York, New York 10017
00041 
00042          National Standard Reference Data System
00043          American Institute of Chemical Engineers
00044 
00045           T.E. Daubert       -       R.P. Danner
00046 
00047             Department of Chemical Engineering
00048             The Pennsylvania State University
00049                 University Park, PA 16802
00050 
00051 \*---------------------------------------------------------------------------*/
00052 
00053 #ifndef NSRDSfunc5_H
00054 #define NSRDSfunc5_H
00055 
00056 #include "thermophysicalFunction.H"
00057 
00058 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00059 
00060 namespace Foam
00061 {
00062 
00063 /*---------------------------------------------------------------------------*\
00064                            Class NSRDSfunc5 Declaration
00065 \*---------------------------------------------------------------------------*/
00066 
00067 class NSRDSfunc5
00068 :
00069     public thermophysicalFunction
00070 {
00071     // Private data
00072 
00073         // NSRDS function 105 coefficients
00074         scalar a_, b_, c_, d_;
00075 
00076 
00077 public:
00078 
00079     //- Runtime type information
00080     TypeName("NSRDSfunc5");
00081 
00082 
00083     // Constructors
00084 
00085         //- Construct from components
00086         NSRDSfunc5(scalar a, scalar b, scalar c, scalar d)
00087         :
00088             a_(a),
00089             b_(b),
00090             c_(c),
00091             d_(d)
00092         {}
00093 
00094         //- Construct from Istream
00095         NSRDSfunc5(Istream& is)
00096         :
00097             a_(readScalar(is)),
00098             b_(readScalar(is)),
00099             c_(readScalar(is)),
00100             d_(readScalar(is))
00101         {}
00102 
00103 
00104     // Member Functions
00105 
00106         //- Evaluate the function and return the result
00107         scalar f(scalar, scalar T) const
00108         {
00109             return a_/pow(b_, 1 + pow(1 - T/c_, d_));
00110         }
00111 
00112 
00113         //- Write the function coefficients
00114         void writeData(Ostream& os) const
00115         {
00116             os  << a_ << token::SPACE
00117                 << b_ << token::SPACE
00118                 << c_ << token::SPACE
00119                 << d_;
00120         }
00121 
00122 
00123     // Ostream Operator
00124 
00125         friend Ostream& operator<<(Ostream& os, const NSRDSfunc5& f)
00126         {
00127             f.writeData(os);
00128             return os;
00129         }
00130 };
00131 
00132 
00133 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00134 
00135 } // End namespace Foam
00136 
00137 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00138 
00139 #endif
00140 
00141 // ************************************************************************* //
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