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::incompressible::RASModels::LamBremhorstKE 00026 00027 Description 00028 Lam and Bremhorst low-Reynolds number k-epsilon turbulence model 00029 for incompressible flows 00030 00031 SourceFiles 00032 LamBremhorstKE.C 00033 00034 \*---------------------------------------------------------------------------*/ 00035 00036 #ifndef LamBremhorstKE_H 00037 #define LamBremhorstKE_H 00038 00039 #include <incompressibleRASModels/RASModel.H> 00040 #include <finiteVolume/wallDist.H> 00041 00042 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00043 00044 namespace Foam 00045 { 00046 namespace incompressible 00047 { 00048 namespace RASModels 00049 { 00050 00051 /*---------------------------------------------------------------------------*\ 00052 Class LamBremhorstKE Declaration 00053 \*---------------------------------------------------------------------------*/ 00054 00055 class LamBremhorstKE 00056 : 00057 public RASModel 00058 { 00059 // Private data 00060 00061 dimensionedScalar Cmu_; 00062 dimensionedScalar C1_; 00063 dimensionedScalar C2_; 00064 dimensionedScalar sigmaEps_; 00065 00066 volScalarField k_; 00067 volScalarField epsilon_; 00068 00069 wallDist y_; 00070 volScalarField Rt_; 00071 00072 volScalarField fMu_; 00073 volScalarField nut_; 00074 00075 00076 public: 00077 00078 //- Runtime type information 00079 TypeName("LamBremhorstKE"); 00080 00081 00082 // Constructors 00083 00084 //- Construct from components 00085 LamBremhorstKE 00086 ( 00087 const volVectorField& U, 00088 const surfaceScalarField& phi, 00089 transportModel& transport 00090 ); 00091 00092 00093 //- Destructor 00094 virtual ~LamBremhorstKE() 00095 {} 00096 00097 00098 // Member Functions 00099 00100 //- Return the turbulence viscosity 00101 virtual tmp<volScalarField> nut() const 00102 { 00103 return nut_; 00104 } 00105 00106 //- Return the effective diffusivity for k 00107 tmp<volScalarField> DkEff() const 00108 { 00109 return tmp<volScalarField> 00110 ( 00111 new volScalarField("DkEff", nut_ + nu()) 00112 ); 00113 } 00114 00115 //- Return the effective diffusivity for epsilon 00116 tmp<volScalarField> DepsilonEff() const 00117 { 00118 return tmp<volScalarField> 00119 ( 00120 new volScalarField("DepsilonEff", nut_/sigmaEps_ + nu()) 00121 ); 00122 } 00123 00124 //- Return the turbulence kinetic energy 00125 virtual tmp<volScalarField> k() const 00126 { 00127 return k_; 00128 } 00129 00130 //- Return the turbulence kinetic energy dissipation rate 00131 virtual tmp<volScalarField> epsilon() const 00132 { 00133 return epsilon_; 00134 } 00135 00136 //- Return the Reynolds stress tensor 00137 virtual tmp<volSymmTensorField> R() const; 00138 00139 //- Return the effective stress tensor including the laminar stress 00140 virtual tmp<volSymmTensorField> devReff() const; 00141 00142 //- Return the source term for the momentum equation 00143 virtual tmp<fvVectorMatrix> divDevReff(volVectorField& U) const; 00144 00145 //- Solve the turbulence equations and correct the turbulence viscosity 00146 virtual void correct(); 00147 00148 //- Read RASProperties dictionary 00149 virtual bool read(); 00150 }; 00151 00152 00153 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00154 00155 } // End namespace RASModels 00156 } // End namespace incompressible 00157 } // End namespace Foam 00158 00159 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00160 00161 #endif 00162 00163 // ************************ vim: set sw=4 sts=4 et: ************************ //
