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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 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, write to the Free Software Foundation, 00023 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00024 00025 Class 00026 kEpsilon 00027 00028 Description 00029 Standard k-epsilon turbulence model. 00030 00031 SourceFiles 00032 kEpsilon.C 00033 kEpsilonCorrect.C 00034 00035 \*---------------------------------------------------------------------------*/ 00036 00037 #ifndef compressiblekEpsilon_H 00038 #define compressiblekEpsilon_H 00039 00040 #include "turbulenceModel.H" 00041 00042 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00043 00044 namespace Foam 00045 { 00046 namespace compressible 00047 { 00048 namespace turbulenceModels 00049 { 00050 00051 /*---------------------------------------------------------------------------*\ 00052 Class kEpsilon Declaration 00053 \*---------------------------------------------------------------------------*/ 00054 00055 class kEpsilon 00056 : 00057 public turbulenceModel 00058 { 00059 // Private data 00060 00061 dimensionedScalar Cmu; 00062 dimensionedScalar C1; 00063 dimensionedScalar C2; 00064 dimensionedScalar C3; 00065 dimensionedScalar alphak; 00066 dimensionedScalar alphaEps; 00067 dimensionedScalar alphah; 00068 00069 volScalarField k_; 00070 volScalarField epsilon_; 00071 volScalarField mut_; 00072 00073 00074 public: 00075 00076 //- Runtime type information 00077 TypeName("kEpsilon"); 00078 00079 // Constructors 00080 00081 //- from components 00082 kEpsilon 00083 ( 00084 const volScalarField& rho, 00085 const volVectorField& U, 00086 const surfaceScalarField& phi, 00087 basicThermo& thermophysicalModel 00088 ); 00089 00090 00091 // Destructor 00092 00093 ~kEpsilon() 00094 {} 00095 00096 00097 // Member Functions 00098 00099 tmp<volScalarField> mut() const 00100 { 00101 return mut_; 00102 } 00103 00104 //- Return the effective diffusivity for k 00105 tmp<volScalarField> DkEff() const 00106 { 00107 return tmp<volScalarField> 00108 ( 00109 new volScalarField("DkEff", alphak*mut_ + mu()) 00110 ); 00111 } 00112 00113 //- Return the effective diffusivity for epsilon 00114 tmp<volScalarField> DepsilonEff() const 00115 { 00116 return tmp<volScalarField> 00117 ( 00118 new volScalarField("DepsilonEff", alphaEps*mut_ + mu()) 00119 ); 00120 } 00121 00122 //- Return the effective turbulent thermal diffusivity 00123 tmp<volScalarField> alphaEff() const 00124 { 00125 return tmp<volScalarField> 00126 ( 00127 new volScalarField("alphaEff", alphah*mut_ + alpha()) 00128 ); 00129 } 00130 00131 tmp<volScalarField> k() const 00132 { 00133 return k_; 00134 } 00135 00136 tmp<volScalarField> epsilon() const 00137 { 00138 return epsilon_; 00139 } 00140 00141 tmp<volTensorField> R() const; 00142 00143 tmp<fvVectorMatrix> divRhoR(volVectorField& U) const; 00144 00145 void correct(); 00146 00147 //- Read turbulenceProperties dictionary 00148 bool read(); 00149 }; 00150 00151 00152 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00153 00154 } // End namespace turbulenceModels 00155 } // End namespace compressible 00156 } // End namespace Foam 00157 00158 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00159 00160 #endif 00161 00162 // ************************************************************************* //