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CourantNo.H

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
00006      \\/     M anipulation  |
00007 -------------------------------------------------------------------------------
00008 License
00009     This file is part of OpenFOAM.
00010 
00011     OpenFOAM is free software: you can redistribute it and/or modify it
00012     under the terms of the GNU General Public License as published by
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00014     (at your option) any later version.
00015 
00016     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
00017     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
00019     for more details.
00020 
00021     You should have received a copy of the GNU General Public License
00022     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
00023 
00024 Global
00025     CourantNo
00026 
00027 Description
00028     Calculates and outputs the mean and maximum Courant Numbers.
00029 
00030 \*---------------------------------------------------------------------------*/
00031 
00032 scalar CoNum = 0.0;
00033 scalar meanCoNum = 0.0;
00034 scalar acousticCoNum = 0.0;
00035 
00036 if (mesh.nInternalFaces())
00037 {
00038     surfaceScalarField SfUfbyDelta = 
00039         mesh.surfaceInterpolation::deltaCoeffs()*mag(phiv);
00040 
00041     CoNum = max(SfUfbyDelta/mesh.magSf())
00042         .value()*runTime.deltaT().value();
00043 
00044     meanCoNum = (sum(SfUfbyDelta)/sum(mesh.magSf()))
00045         .value()*runTime.deltaT().value();
00046 
00047     acousticCoNum = max
00048     (
00049         mesh.surfaceInterpolation::deltaCoeffs()/sqrt(fvc::interpolate(psi))
00050     ).value()*runTime.deltaT().value();
00051 }
00052 
00053 Info<< "phiv Courant Number mean: " << meanCoNum
00054     << " max: " << CoNum
00055     << " acoustic max: " << acousticCoNum
00056     << endl;
00057 
00058 // ************************ vim: set sw=4 sts=4 et: ************************ //
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