Creation of OpenFOAM-dev repository 15/04/2008

2025-11-28 03:28:01 +00:00 · 2008-04-15 18:56:58 +01:00
commit 3170c7c0c9
9896 changed files with 4016171 additions and 0 deletions
--- a/applications/utilities/postProcessing/velocityField/Lambda2/Lambda2.C
+++ b/applications/utilities/postProcessing/velocityField/Lambda2/Lambda2.C
@ -0,0 +1,107 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2007 OpenCFD Ltd.
+     \\/     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 2 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, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+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, for each time.
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "tensorField.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+
+#   include "addTimeOptions.H"
+#   include "setRootCase.H"
+
+#   include "createTime.H"
+
+    // Get times list
+    instantList Times = runTime.times();
+
+    // set startTime and endTime depending on -time and -latestTime options
+#   include "checkTimeOptions.H"
+
+    runTime.setTime(Times[startTime], startTime);
+
+#   include "createMesh.H"
+
+    for (label i=startTime; i<endTime; i++)
+    {
+        runTime.setTime(Times[i], i);
+
+        Info<< "Time = " << runTime.timeName() << endl;
+
+        IOobject Uheader
+        (
+            "U",
+            runTime.timeName(),
+            mesh,
+            IOobject::MUST_READ
+        );
+
+        // Check U exists
+        if (Uheader.headerOk())
+        {
+            mesh.readUpdate();
+
+            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();
+        }
+    }
+
+    return(0);
+}
+
+
+// ************************************************************************* //