1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright held by original author
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 the
13 Free Software Foundation; either version 2 of the License, or (at your
14 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, write to the Free Software Foundation,
23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 Calculates and writes the second largest eigenvalue of the sum of the
30 square of the symmetrical and anti-symmetrical parts of the velocity
33 The -noWrite option has no meaning.
35 \*---------------------------------------------------------------------------*/
40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
42 void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
52 if (Uheader.headerOk())
54 Info<< " Reading U" << endl;
55 volVectorField U(Uheader, mesh);
57 const volTensorField gradU(fvc::grad(U));
59 volTensorField SSplusWW =
60 (symm(gradU) & symm(gradU));
61 // (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 // ************************************************************************* //