1 /*---------------------------------------------------------------------------* \
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 2004-2010 OpenCFD Ltd.
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
11 OpenFOAM is free software: you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation, either version 3 of the License, or
14 (at your option) any later version.
16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 You should have received a copy of the GNU General Public License
22 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
28 Calculates and writes the second largest eigenvalue of the sum of the
29 square of the symmetrical and anti-symmetrical parts of the velocity
32 The -noWrite option has no meaning.
34 \*---------------------------------------------------------------------------*/
39 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
41 void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
51 if (Uheader.headerOk())
53 Info<< " Reading U" << endl;
54 volVectorField U(Uheader, mesh);
56 const volTensorField gradU(fvc::grad(U));
58 volTensorField SSplusWW
60 (symm(gradU) & symm(gradU)) + (skew(gradU) & skew(gradU))
63 volScalarField Lambda2
73 -eigenValues(SSplusWW)().component(vector::Y)
76 Info<< " Writing -Lambda2" << endl;
81 Info<< " No U" << endl;
84 Info<< "\nEnd\n" << endl;
88 // ************************************************************************* //