68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Application
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graphTest
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Description
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Test program for making graphs
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\*---------------------------------------------------------------------------*/
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#include "graph.H"
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#include "OFstream.H"
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#include "mathematicalConstants.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main()
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{
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scalarField x(100);
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scalarField r(x.size());
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forAll(x, i)
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{
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x[i] = -3 + 0.06*i;
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}
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scalarField b = 0.5*(1.0 + erf(x));
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scalarField c = 1.0 - b;
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scalarField gradb = (1/::sqrt(mathematicalConstant::pi))*exp(-sqr(x));
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scalarField lapb = -2*x*gradb;
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r = lapb*b*c/(gradb*gradb);
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graph("r", "x", "r", x, r).write("r", "xmgr");
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Info<< "end" << endl;
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return(0);
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}
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// ************************************************************************* //
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