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adiabaticFlameT.C

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2010 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
00013     the Free Software Foundation, either version 3 of the License, or
00014     (at your 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, see <http://www.gnu.org/licenses/>.
00023 
00024 Application
00025     adiabaticFlameT
00026 
00027 Description
00028     Calculates the adiabatic flame temperature for a given fuel over a
00029     range of unburnt temperatures and equivalence ratios.
00030 
00031 Usage
00032 
00033     - adiabaticFlameT [OPTIONS] <controlFile>
00034 
00035     @param <controlFile> \n
00036     @todo Detailed description of argument.
00037 
00038     @param -case <dir>\n
00039     Case directory.
00040 
00041     @param -parallel \n
00042     Run in parallel.
00043 
00044     @param -help \n
00045     Display help message.
00046 
00047     @param -doc \n
00048     Display Doxygen API documentation page for this application.
00049 
00050     @param -srcDoc \n
00051     Display Doxygen source documentation page for this application.
00052 
00053 \*---------------------------------------------------------------------------*/
00054 
00055 #include <OpenFOAM/argList.H>
00056 #include <OpenFOAM/Time.H>
00057 #include <OpenFOAM/dictionary.H>
00058 #include <OpenFOAM/IFstream.H>
00059 #include <OpenFOAM/OSspecific.H>
00060 
00061 #include <specie/specieThermo.H>
00062 #include <specie/janafThermo.H>
00063 #include <specie/perfectGas.H>
00064 
00065 using namespace Foam;
00066 
00067 typedef specieThermo<janafThermo<perfectGas> > thermo;
00068 
00069 
00070 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00071 
00072 int main(int argc, char *argv[])
00073 {
00074     argList::validArgs.clear();
00075     argList::validArgs.append("controlFile");
00076     argList args(argc, argv);
00077 
00078     fileName controlFileName(args.additionalArgs()[0]);
00079 
00080     // Construct control dictionary
00081     IFstream controlFile(controlFileName);
00082 
00083     // Check controlFile stream is OK
00084     if (!controlFile.good())
00085     {
00086         FatalErrorIn(args.executable())
00087             << "Cannot read file " << controlFileName
00088             << exit(FatalError);
00089     }
00090 
00091     dictionary control(controlFile);
00092 
00093 
00094     scalar T0(readScalar(control.lookup("T0")));
00095     word fuelName(control.lookup("fuel"));
00096     scalar n(readScalar(control.lookup("n")));
00097     scalar m(readScalar(control.lookup("m")));
00098 
00099 
00100     Info<< nl << "Reading Burcat data dictionary" << endl;
00101 
00102     fileName BurcatCpDataFileName(findEtcFile("thermoData/BurcatCpData"));
00103 
00104     // Construct control dictionary
00105     IFstream BurcatCpDataFile(BurcatCpDataFileName);
00106 
00107     // Check BurcatCpData stream is OK
00108     if (!BurcatCpDataFile.good())
00109     {
00110         FatalErrorIn(args.executable())
00111             << "Cannot read file " << BurcatCpDataFileName
00112             << exit(FatalError);
00113     }
00114 
00115     dictionary CpData(BurcatCpDataFile);
00116 
00117 
00118     scalar stoicO2 = n + m/4.0;
00119     scalar stoicN2 = (0.79/0.21)*(n + m/4.0);
00120     scalar stoicCO2 = n;
00121     scalar stoicH2O = m/2.0;
00122 
00123     thermo fuel
00124     (
00125         "fuel",
00126         thermo(CpData.lookup(fuelName))
00127     );
00128 
00129     thermo oxidant
00130     (
00131         "oxidant",
00132         stoicO2*thermo(CpData.lookup("O2"))
00133       + stoicN2*thermo(CpData.lookup("N2"))
00134     );
00135 
00136     dimensionedScalar stoichiometricAirFuelMassRatio
00137     (
00138         "stoichiometricAirFuelMassRatio",
00139         dimless,
00140         (oxidant.W()*oxidant.nMoles())/fuel.W()
00141     );
00142 
00143     Info<< "stoichiometricAirFuelMassRatio "
00144         << stoichiometricAirFuelMassRatio << ';' << endl;
00145 
00146     for (int i=0; i<300; i++)
00147     {
00148         scalar equiv = (i + 1)*0.01;
00149         scalar ft = 1/(1 + stoichiometricAirFuelMassRatio.value()/equiv);
00150 
00151         Info<< "phi = " << equiv << nl
00152             << "ft = " << ft << endl;
00153 
00154         scalar o2 = (1.0/equiv)*stoicO2;
00155         scalar n2 = (0.79/0.21)*o2;
00156         scalar fres = max(1.0 - 1.0/equiv, 0.0);
00157         scalar ores = max(1.0/equiv - 1.0, 0.0);
00158         scalar fburnt = 1.0 - fres;
00159 
00160         thermo fuel
00161         (
00162             "fuel",
00163             thermo(CpData.lookup(fuelName))
00164         );
00165         Info<< "fuel " << fuel << ';' << endl;
00166 
00167         thermo oxidant
00168         (
00169             "oxidant",
00170             o2*thermo(CpData.lookup("O2"))
00171           + n2*thermo(CpData.lookup("N2"))
00172         );
00173         Info<< "oxidant " << (1/oxidant.nMoles())*oxidant << ';' << endl;
00174 
00175         thermo reactants
00176         (
00177             "reactants",
00178             fuel + oxidant
00179         );
00180         Info<< "reactants " << (1/reactants.nMoles())*reactants << ';' << endl;
00181 
00182         thermo burntProducts
00183         (
00184             "burntProducts",
00185           + (n2 - (0.79/0.21)*ores*stoicO2)*thermo(CpData.lookup("N2"))
00186           + fburnt*stoicCO2*thermo(CpData.lookup("CO2"))
00187           + fburnt*stoicH2O*thermo(CpData.lookup("H2O"))
00188         );
00189         Info<< "burntProducts "
00190             << (1/burntProducts.nMoles())*burntProducts << ';' << endl;
00191 
00192         thermo products
00193         (
00194             "products",
00195             fres*fuel
00196           + n2*thermo(CpData.lookup("N2"))
00197           + fburnt*stoicCO2*thermo(CpData.lookup("CO2"))
00198           + fburnt*stoicH2O*thermo(CpData.lookup("H2O"))
00199           + ores*stoicO2*thermo(CpData.lookup("O2"))
00200         );
00201 
00202         Info<< "products " << (1/products.nMoles())*products << ';' << endl;
00203 
00204         scalar Tad = products.TH(reactants.H(T0), 1000.0);
00205         Info<< "Tad = " << Tad << nl << endl;
00206     }
00207 
00208     Info<< nl << "end" << endl;
00209 
00210     return 0;
00211 }
00212 
00213 
00214 // ************************ vim: set sw=4 sts=4 et: ************************ //
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