applications/utilities/postProcessing/velocityField/vorticity/vorticity.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2008 OpenCFD Ltd.
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  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.
  15
  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
  19     for more details.
  20
  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
  24
  25 Application
  26     vorticity
  27
  28 Description
  29     Calculates and writes the vorticity of velocity field U.
  30     The -noWrite option just outputs the max/min values without writing
  31     the field.
  32
  33 \*---------------------------------------------------------------------------*/
  34
  35 #include "calc.H"
  36 #include "fvc.H"
  37
  38 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  39
  40 void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
  41 {
  42     bool writeResults = !args.options().found("noWrite");
  43
  44     IOobject Uheader
  45     (
  46         "U",
  47         runTime.timeName(),
  48         mesh,
  49         IOobject::MUST_READ
  50     );
  51
  52     if (Uheader.headerOk())
  53     {
  54         Info<< "    Reading U" << endl;
  55         volVectorField U(Uheader, mesh);
  56
  57         Info<< "    Calculating vorticity" << endl;
  58         volVectorField vorticity
  59         (
  60             IOobject
  61             (
  62                 "vorticity",
  63                 runTime.timeName(),
  64                 mesh,
  65                 IOobject::NO_READ
  66             ),
  67             fvc::curl(U)
  68         );
  69
  70         volScalarField magVorticity
  71         (
  72             IOobject
  73             (
  74                 "magVorticity",
  75                 runTime.timeName(),
  76                 mesh,
  77                 IOobject::NO_READ
  78             ),
  79             mag(vorticity)
  80         );
  81
  82         Info<< "vorticity max/min : "
  83             << max(magVorticity).value() << " "
  84             << min(magVorticity).value() << endl;
  85
  86         if (writeResults)
  87         {
  88             vorticity.write();
  89             magVorticity.write();
  90         }
  91     }
  92     else
  93     {
  94         Info<< "    No U" << endl;
  95     }
  96 }
  97
  98 // ************************************************************************* //