src/combustionModels/infinitelyFastChemistry/infinitelyFastChemistry.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9
  10     OpenFOAM is free software: you can redistribute it and/or modify it
  11     under the terms of the GNU General Public License as published by
  12     the Free Software Foundation, either version 3 of the License, or
  13     (at your option) any later version.
  14
  15     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  16     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18     for more details.
  19
  20     You should have received a copy of the GNU General Public License
  21     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 \*---------------------------------------------------------------------------*/
  24
  25 #include "infinitelyFastChemistry.H"
  26 #include "addToRunTimeSelectionTable.H"
  27 #include "fvmSup.H"
  28
  29 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  30
  31 namespace Foam
  32 {
  33 namespace combustionModels
  34 {
  35     defineTypeNameAndDebug(infinitelyFastChemistry, 0);
  36     addToRunTimeSelectionTable
  37     (
  38         combustionModel,
  39         infinitelyFastChemistry,
  40         dictionary
  41     );
  42 };
  43 };
  44
  45
  46 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  47
  48 Foam::combustionModels::infinitelyFastChemistry::infinitelyFastChemistry
  49 (
  50     const dictionary& combustionProps,
  51     hsCombustionThermo& thermo,
  52     const compressible::turbulenceModel& turbulence,
  53     const surfaceScalarField& phi,
  54     const volScalarField& rho
  55 )
  56 :
  57     combustionModel(typeName, combustionProps, thermo, turbulence, phi, rho),
  58     C_(readScalar(coeffs_.lookup("C"))),
  59     singleMixture_
  60     (
  61         dynamic_cast<singleStepReactingMixture<gasThermoPhysics>&>(thermo)
  62     ),
  63     wFuelNorm_
  64     (
  65         IOobject
  66         (
  67             "wFuelNorm",
  68             mesh_.time().timeName(),
  69             mesh_,
  70             IOobject::NO_READ,
  71             IOobject::NO_WRITE
  72         ),
  73         mesh_,
  74         dimensionedScalar("zero", dimMass/pow3(dimLength)/dimTime, 0.0)
  75     )
  76 {}
  77
  78
  79 // * * * * * * * * * * * * * * * * Destructors * * * * * * * * * * * * * * * //
  80
  81 Foam::combustionModels::infinitelyFastChemistry::~infinitelyFastChemistry()
  82 {}
  83
  84
  85 // * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
  86
  87 void Foam::combustionModels::infinitelyFastChemistry::correct()
  88 {
  89     singleMixture_.fresCorrect();
  90
  91     const label fuelI = singleMixture_.fuelIndex();
  92
  93     const volScalarField& YFuel = thermo_.composition().Y()[fuelI];
  94
  95     const dimensionedScalar s = singleMixture_.s();
  96
  97     if (thermo_.composition().contains("O2"))
  98     {
  99         const volScalarField& YO2 = thermo_.composition().Y("O2");
 100         wFuelNorm_ == rho_/(mesh_.time().deltaT()*C_)*min(YFuel, YO2/s.value());
 101     }
 102 }
 103
 104
 105 Foam::tmp<Foam::fvScalarMatrix>
 106 Foam::combustionModels::infinitelyFastChemistry::R(volScalarField& Y) const
 107 {
 108     const label specieI = thermo_.composition().species()[Y.name()];
 109
 110     const label fNorm = singleMixture_.specieProd()[specieI];
 111
 112     const volScalarField fres(singleMixture_.fres(specieI));
 113
 114     const volScalarField wSpecie
 115     (
 116         wFuelNorm_*singleMixture_.specieStoichCoeffs()[specieI]
 117       / max(fNorm*(Y - fres), scalar(0.001))
 118     );
 119
 120     return -fNorm*wSpecie*fres + fNorm*fvm::Sp(wSpecie, Y);
 121 }
 122
 123
 124 Foam::tmp<Foam::volScalarField>
 125 Foam::combustionModels::infinitelyFastChemistry::dQ() const
 126 {
 127     const label fuelI = singleMixture_.fuelIndex();
 128     volScalarField& YFuel = thermo_.composition().Y(fuelI);
 129
 130     return -singleMixture_.qFuel()*(R(YFuel) & YFuel);
 131 }
 132
 133
 134 Foam::tmp<Foam::volScalarField>
 135 Foam::combustionModels::infinitelyFastChemistry::wFuelNorm() const
 136 {
 137     return wFuelNorm_;
 138 }
 139
 140
 141 bool Foam::combustionModels::infinitelyFastChemistry::read
 142 (
 143     const dictionary& combustionProps
 144 )
 145 {
 146     combustionModel::read(combustionProps);
 147     coeffs_.lookup("C") >> C_ ;
 148
 149     return true;
 150 }
 151
 152
 153 // ************************************************************************* //