1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | foam-extend: Open Source CFD
4 \\ / O peration | Version: 3.2
5 \\ / A nd | Web: http://www.foam-extend.org
6 \\/ M anipulation | For copyright notice see file Copyright
7 -------------------------------------------------------------------------------
9 This file is part of foam-extend.
11 foam-extend is free software: you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by the
13 Free Software Foundation, either version 3 of the License, or (at your
14 option) any later version.
16 foam-extend is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with foam-extend. 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 =
59 (symm(gradU) & symm(gradU));
60 // (skew(gradU) & skew(gradU));
62 volScalarField Lambda2
72 -eigenValues(SSplusWW)().component(vector::Y)
75 Info << " Writing -Lambda2" << endl;
80 Info<< " No U" << endl;
83 Info<< "\nEnd\n" << endl;
87 // ************************************************************************* //