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 Class 00025 Foam::compressible::LESModels::lowReOneEqEddy 00026 00027 Description 00028 One Equation Eddy Viscosity Model for compressible flow 00029 00030 @verbatim 00031 d/dt(rho*k) + div(rho*U*k) - div(muEff*grad(k)) 00032 = 00033 -rho*B*L - ce*rho*k^3/2/delta 00034 00035 and 00036 00037 B = 2/3*k*I - 2*nuSgs*dev(D) 00038 00039 where 00040 00041 nuSgsHiRe = ck*sqrt(k)*delta 00042 nuSgs = (nu/beta)*(1 - exp(-beta*nuSgsHiRe/nu)); 00043 @endverbatim 00044 00045 SourceFiles 00046 lowReOneEqEddy.C 00047 00048 \*---------------------------------------------------------------------------*/ 00049 00050 #ifndef compressibleLowReOneEqEddy_H 00051 #define compressibleLowReOneEqEddy_H 00052 00053 #include <compressibleLESModels/GenEddyVisc.H> 00054 00055 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00056 00057 namespace Foam 00058 { 00059 namespace compressible 00060 { 00061 namespace LESModels 00062 { 00063 00064 /*---------------------------------------------------------------------------*\ 00065 Class lowReOneEqEddy Declaration 00066 \*---------------------------------------------------------------------------*/ 00067 00068 class lowReOneEqEddy 00069 : 00070 public GenEddyVisc 00071 { 00072 // Private data 00073 00074 dimensionedScalar ck_; 00075 dimensionedScalar beta_; 00076 00077 // Private Member Functions 00078 00079 //- Update sub-grid scale fields 00080 void updateSubGridScaleFields(); 00081 00082 // Disallow default bitwise copy construct and assignment 00083 lowReOneEqEddy(const lowReOneEqEddy&); 00084 lowReOneEqEddy& operator=(const lowReOneEqEddy&); 00085 00086 00087 public: 00088 00089 //- Runtime type information 00090 TypeName("lowReOneEqEddy"); 00091 00092 00093 // Constructors 00094 00095 //- Constructor from components 00096 lowReOneEqEddy 00097 ( 00098 const volScalarField& rho, 00099 const volVectorField& U, 00100 const surfaceScalarField& phi, 00101 const basicThermo& thermoPhysicalModel 00102 ); 00103 00104 00105 //- Destructor 00106 virtual ~lowReOneEqEddy() 00107 {} 00108 00109 00110 // Member Functions 00111 00112 //- Return the effective diffusivity for k 00113 tmp<volScalarField> DkEff() const 00114 { 00115 return tmp<volScalarField> 00116 ( 00117 new volScalarField("DkEff", muSgs_ + mu()) 00118 ); 00119 } 00120 00121 //- Correct Eddy-Viscosity and related properties 00122 virtual void correct(const tmp<volTensorField>& gradU); 00123 00124 //- Read LESProperties dictionary 00125 virtual bool read(); 00126 }; 00127 00128 00129 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00130 00131 } // End namespace LESModels 00132 } // End namespace compressible 00133 } // End namespace Foam 00134 00135 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00136 00137 #endif 00138 00139 // ************************ vim: set sw=4 sts=4 et: ************************ //
