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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 BirdCarreau 00027 00028 Description 00029 Bird-Carreau non-Newtonian viscosity model. 00030 00031 SourceFiles 00032 BirdCarreau.C 00033 00034 \*---------------------------------------------------------------------------*/ 00035 00036 #ifndef BirdCarreau_H 00037 #define BirdCarreau_H 00038 00039 #include "viscosityModel.H" 00040 #include "dimensionedScalar.H" 00041 #include "volFields.H" 00042 00043 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00044 00045 namespace Foam 00046 { 00047 namespace viscosityModels 00048 { 00049 00050 /*---------------------------------------------------------------------------*\ 00051 Class BirdCarreau Declaration 00052 \*---------------------------------------------------------------------------*/ 00053 00054 class BirdCarreau 00055 : 00056 public viscosityModel 00057 { 00058 // Private data 00059 00060 dictionary BirdCarreauCoeffs_; 00061 00062 dimensionedScalar nu0_; 00063 dimensionedScalar nuInf_; 00064 dimensionedScalar k_; 00065 dimensionedScalar n_; 00066 00067 volScalarField nu_; 00068 00069 00070 // Private Member Functions 00071 00072 //- Calculate and return the laminar viscosity 00073 tmp<volScalarField> calcNu() const; 00074 00075 00076 public: 00077 00078 //- Runtime type information 00079 TypeName("BirdCarreau"); 00080 00081 00082 // Constructors 00083 00084 //- construct from components 00085 BirdCarreau 00086 ( 00087 const word& name, 00088 const dictionary& viscosityProperties, 00089 const volVectorField& U, 00090 const surfaceScalarField& phi 00091 ); 00092 00093 00094 // Destructor 00095 00096 ~BirdCarreau() 00097 {} 00098 00099 00100 // Member Functions 00101 00102 //- Return the laminar viscosity 00103 tmp<volScalarField> nu() const 00104 { 00105 return nu_; 00106 } 00107 00108 //- Correct the laminar viscosity 00109 void correct() 00110 { 00111 nu_ = calcNu(); 00112 } 00113 00114 //- Read transportProperties dictionary 00115 bool read(const dictionary& viscosityProperties); 00116 }; 00117 00118 00119 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00120 00121 } // End namespace viscosityModels 00122 } // End namespace Foam 00123 00124 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00125 00126 #endif 00127 00128 // ************************************************************************* //