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::interfaceCompressionLimiter 00026 00027 Description 00028 Interface compression scheme currently based on the generic limited 00029 scheme although it does not use the NVD/TVD functions. 00030 00031 SourceFiles 00032 interfaceCompression.C 00033 00034 \*---------------------------------------------------------------------------*/ 00035 00036 #ifndef interfaceCompression_H 00037 #define interfaceCompression_H 00038 00039 #include <OpenFOAM/vector.H> 00040 00041 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00042 00043 namespace Foam 00044 { 00045 00046 /*---------------------------------------------------------------------------*\ 00047 Class interfaceCompressionWeight Declaration 00048 \*---------------------------------------------------------------------------*/ 00049 00050 class interfaceCompressionLimiter 00051 { 00052 00053 public: 00054 00055 interfaceCompressionLimiter(Istream&) 00056 {} 00057 00058 scalar limiter 00059 ( 00060 const scalar cdWeight, 00061 const scalar faceFlux, 00062 const scalar& phiP, 00063 const scalar& phiN, 00064 const vector&, 00065 const scalar& 00066 ) const 00067 { 00068 // Quadratic compression scheme 00069 //return min(max(4*min(phiP*(1 - phiP), phiN*(1 - phiN)), 0), 1); 00070 00071 // Quartic compression scheme 00072 return 00073 min(max( 00074 1 - max(sqr(1 - 4*phiP*(1 - phiP)), sqr(1 - 4*phiN*(1 - phiN))), 00075 0), 1); 00076 } 00077 }; 00078 00079 00080 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00081 00082 } // End namespace Foam 00083 00084 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00085 00086 #endif 00087 00088 // ************************ vim: set sw=4 sts=4 et: ************************ //
