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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 transform 00027 00028 Description 00029 3D tensor transformation operations. 00030 00031 \*---------------------------------------------------------------------------*/ 00032 00033 #ifndef transform_H 00034 #define transform_H 00035 00036 #include "tensor.H" 00037 00038 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00039 00040 namespace Foam 00041 { 00042 00043 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00044 00045 inline tensor transformationTensor 00046 ( 00047 const vector& n1, 00048 const vector& n2 00049 ) 00050 { 00051 return 00052 (n1 & n2)*I 00053 + (1 - (n1 & n2))*sqr(n1 ^ n2)/(magSqr(n1 ^ n2) + VSMALL) 00054 + (n2*n1 - n1*n2); 00055 } 00056 00057 00058 inline scalar transform(const tensor&, const scalar s) 00059 { 00060 return s; 00061 } 00062 00063 00064 template<class Cmpt> 00065 inline Vector<Cmpt> transform(const tensor& tt, const Vector<Cmpt>& v) 00066 { 00067 return tt & v; 00068 } 00069 00070 00071 template<class Cmpt> 00072 inline Tensor<Cmpt> transform(const tensor& tt, const Tensor<Cmpt>& t) 00073 { 00074 return tt & t & tt.T(); 00075 } 00076 00077 00078 template<class Cmpt> 00079 inline SphericalTensor<Cmpt> transform 00080 ( 00081 const tensor& tt, 00082 const SphericalTensor<Cmpt>& st 00083 ) 00084 { 00085 return st; 00086 } 00087 00088 00089 template<class Type1, class Type2> 00090 inline Type1 transformMask(const Type2& t) 00091 { 00092 return t; 00093 } 00094 00095 00096 template<> 00097 inline SphericalTensor<scalar> transformMask(const tensor& t) 00098 { 00099 return SphericalTensor<scalar>::one; 00100 } 00101 00102 00103 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00104 00105 } // End namespace Foam 00106 00107 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00108 00109 #endif 00110 00111 // ************************************************************************* //