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SpalartAllmaras.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 
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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     SpalartAllmaras
00027 
00028 Description
00029 
00030 SourceFiles
00031     SpalartAllmaras.C
00032 
00033 \*---------------------------------------------------------------------------*/
00034 
00035 #ifndef SpalartAllmaras_H
00036 #define SpalartAllmaras_H
00037 
00038 #include "LESmodel.H"
00039 #include "volFields.H"
00040 
00041 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00042 
00043 namespace Foam
00044 {
00045 namespace LESmodels
00046 {
00047 
00048 /*---------------------------------------------------------------------------*\
00049                            Class SpalartAllmaras Declaration
00050 \*---------------------------------------------------------------------------*/
00051 
00052 class SpalartAllmaras
00053 :
00054     public LESmodel
00055 {
00056     // Private data
00057 
00058         dimensionedScalar alphaNut_;
00059 
00060         dimensionedScalar Cb1_;
00061         dimensionedScalar Cb2_;
00062         dimensionedScalar Cv1_;
00063         dimensionedScalar Cv2_;
00064         dimensionedScalar CDES_;
00065         dimensionedScalar ck_;
00066         dimensionedScalar kappa_;
00067         dimensionedScalar Cw1_;
00068         dimensionedScalar Cw2_;
00069         dimensionedScalar Cw3_;
00070 
00071 
00072     // Private member functions
00073 
00074         tmp<volScalarField> fv1() const;
00075         tmp<volScalarField> fv2() const;
00076         tmp<volScalarField> fv3() const;
00077         tmp<volScalarField> fw(const volScalarField& Stilda) const;
00078 
00079         // Disallow default bitwise copy construct and assignment
00080         SpalartAllmaras(const SpalartAllmaras&);
00081         SpalartAllmaras& operator=(const SpalartAllmaras&);       
00082 
00083         volScalarField nuTilda_;
00084         volScalarField dTilda_;
00085         volScalarField nuSgs_;
00086 
00087 
00088 public:
00089 
00090     //- Runtime type information
00091     TypeName("SpalartAllmaras");
00092 
00093 
00094     // Constructors
00095 
00096         //- Constructor from components
00097         SpalartAllmaras
00098         (
00099             const volVectorField& U,
00100             const surfaceScalarField& phi,
00101             transportModel& transport
00102         );
00103 
00104 
00105     // Destructor
00106 
00107         ~SpalartAllmaras()
00108         {}
00109 
00110 
00111     // Member Functions
00112 
00113         //- Evaluate B. This is done on the fly : its not usually necessary,
00114         //  but will be if we want to compare with experiments or DNS
00115         tmp<volTensorField> B() const;
00116         
00117         //- Return SGS kinetic energy
00118         tmp<volScalarField> k() const
00119         {
00120             return sqr(nuSgs()/ck_/dTilda_);
00121         }
00122 
00123         //- Return sub-grid disipation rate
00124         tmp<volScalarField> epsilon() const;
00125 
00126         tmp<volScalarField> nuTilda() const
00127         {
00128             return nuTilda_;
00129         }
00130 
00131         //- Return SGS viscosity
00132         tmp<volScalarField> nuSgs() const
00133         {
00134             return nuSgs_;
00135         }       
00136 
00137         //- Returns divergence of B : i.e. the additional term in the
00138         //  filtered NSE.
00139         tmp<fvVectorMatrix> divB(volVectorField& U) const;
00140 
00141         //- Correct nuTilda and related properties
00142         void correct(const tmp<volTensorField>& gradU);
00143 
00144         //- Read turbulenceProperties dictionary
00145         bool read();
00146 };
00147 
00148 
00149 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00150 
00151 } // End namespace LESmodels
00152 } // End namespace Foam
00153 
00154 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00155 
00156 #endif
00157 
00158 // ************************************************************************* //
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