89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*---------------------------------------------------------------------------* \
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
|
|
\\/ M anipulation |
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of OpenFOAM.
|
|
|
|
OpenFOAM is free software: you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Application
|
|
Lambda2
|
|
|
|
Description
|
|
Calculates and writes the second largest eigenvalue of the sum of the
|
|
square of the symmetrical and anti-symmetrical parts of the velocity
|
|
gradient tensor.
|
|
|
|
The -noWrite option has no meaning.
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "calc.H"
|
|
#include "fvc.H"
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
|
|
{
|
|
IOobject Uheader
|
|
(
|
|
"U",
|
|
runTime.timeName(),
|
|
mesh,
|
|
IOobject::MUST_READ
|
|
);
|
|
|
|
if (Uheader.headerOk())
|
|
{
|
|
Info<< " Reading U" << endl;
|
|
volVectorField U(Uheader, mesh);
|
|
|
|
const volTensorField gradU(fvc::grad(U));
|
|
|
|
volTensorField SSplusWW
|
|
(
|
|
(symm(gradU) & symm(gradU)) + (skew(gradU) & skew(gradU))
|
|
);
|
|
|
|
volScalarField Lambda2
|
|
(
|
|
IOobject
|
|
(
|
|
"Lambda2",
|
|
runTime.timeName(),
|
|
mesh,
|
|
IOobject::NO_READ,
|
|
IOobject::NO_WRITE
|
|
),
|
|
-eigenValues(SSplusWW)().component(vector::Y)
|
|
);
|
|
|
|
Info<< " Writing -Lambda2" << endl;
|
|
Lambda2.write();
|
|
}
|
|
else
|
|
{
|
|
Info<< " No U" << endl;
|
|
}
|
|
|
|
Info<< "\nEnd\n" << endl;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|