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::viscosityModels::powerLaw 00026 00027 Description 00028 Standard power-law non-Newtonian viscosity model. 00029 00030 SourceFiles 00031 powerLaw.C 00032 00033 \*---------------------------------------------------------------------------*/ 00034 00035 #ifndef powerLaw_H 00036 #define powerLaw_H 00037 00038 #include <incompressibleTransportModels/viscosityModel.H> 00039 #include <OpenFOAM/dimensionedScalar.H> 00040 #include <finiteVolume/volFields.H> 00041 00042 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00043 00044 namespace Foam 00045 { 00046 namespace viscosityModels 00047 { 00048 00049 /*---------------------------------------------------------------------------*\ 00050 Class powerLaw Declaration 00051 \*---------------------------------------------------------------------------*/ 00052 00053 class powerLaw 00054 : 00055 public viscosityModel 00056 { 00057 // Private data 00058 00059 dictionary powerLawCoeffs_; 00060 00061 dimensionedScalar k_; 00062 dimensionedScalar n_; 00063 dimensionedScalar nuMin_; 00064 dimensionedScalar nuMax_; 00065 00066 volScalarField nu_; 00067 00068 00069 // Private Member Functions 00070 00071 //- Calculate and return the laminar viscosity 00072 tmp<volScalarField> calcNu() const; 00073 00074 00075 public: 00076 00077 //- Runtime type information 00078 TypeName("powerLaw"); 00079 00080 00081 // Constructors 00082 00083 //- Construct from components 00084 powerLaw 00085 ( 00086 const word& name, 00087 const dictionary& viscosityProperties, 00088 const volVectorField& U, 00089 const surfaceScalarField& phi 00090 ); 00091 00092 00093 // Destructor 00094 00095 ~powerLaw() 00096 {} 00097 00098 00099 // Member Functions 00100 00101 //- Return the laminar viscosity 00102 tmp<volScalarField> nu() const 00103 { 00104 return nu_; 00105 } 00106 00107 //- Correct the laminar viscosity 00108 void correct() 00109 { 00110 nu_ = calcNu(); 00111 } 00112 00113 //- Read transportProperties dictionary 00114 bool read(const dictionary& viscosityProperties); 00115 }; 00116 00117 00118 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00119 00120 } // End namespace viscosityModels 00121 } // End namespace Foam 00122 00123 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00124 00125 #endif 00126 00127 // ************************ vim: set sw=4 sts=4 et: ************************ //
