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Smagorinsky2.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
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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     Smagorinsky2
00027 
00028 Description
00029 <pre>
00030     The Isochoric Smagorinsky Model
00031     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00032     Algebraic eddy viscosity SGS model founded on the assumption that
00033     local equilibrium prevails, hence
00034 
00035         B = 2/3*k*I - 2*nuEff*dev(D) - 2*cD2*delta*(D.dev(D));
00036 
00037     where
00038 
00039         D = symm(grad(U));
00040         k = cI*delta^2*||D||^2
00041         nuSgs = ck*sqrt(k)*delta
00042         nuEff = nuSgs + nu
00043 </pre>
00044 
00045 SourceFiles
00046     Smagorinsky2.C
00047 
00048 \*---------------------------------------------------------------------------*/
00049 
00050 #ifndef Smagorinsky2_H
00051 #define Smagorinsky2_H
00052 
00053 #include "Smagorinsky.H"
00054 
00055 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00056 
00057 namespace Foam
00058 {
00059 namespace LESmodels
00060 {
00061 
00062 /*---------------------------------------------------------------------------*\
00063                            Class Smagorinsky2 Declaration
00064 \*---------------------------------------------------------------------------*/
00065 
00066 class Smagorinsky2
00067 :
00068     public Smagorinsky
00069 {
00070     // Private data
00071 
00072         dimensionedScalar cD2_;
00073 
00074 
00075     // Private Member Functions
00076 
00077         // Disallow default bitwise copy construct and assignment
00078         Smagorinsky2(const Smagorinsky2&);
00079         Smagorinsky2& operator=(const Smagorinsky2&);
00080 
00081 
00082 public:
00083 
00084     //- Runtime type information
00085     TypeName("Smagorinsky2");
00086 
00087 
00088     // Constructors
00089 
00090         //- Construct from components
00091         Smagorinsky2
00092         (
00093             const volVectorField& U,
00094             const surfaceScalarField& phi,
00095             transportModel& transport
00096         );
00097 
00098 
00099     // Destructor
00100 
00101         ~Smagorinsky2()
00102         {}
00103 
00104 
00105     // Member Functions
00106 
00107         //- Return B.
00108         tmp<volTensorField> B() const;
00109 
00110         //- Returns div(B).
00111         // This is the additional term due to the filtering of the NSE.
00112         tmp<fvVectorMatrix> divB(volVectorField& U) const;
00113 
00114         //- Read turbulenceProperties dictionary
00115         bool read();
00116 };
00117 
00118 
00119 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00120 
00121 } // End namespace LESmodels
00122 } // End namespace Foam
00123 
00124 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00125 
00126 #endif
00127 
00128 // ************************************************************************* //
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