67 lines
1.9 KiB
C
67 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) 2011 OpenFOAM Foundation
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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
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the Free Software Foundation, either version 3 of the License, or
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(at your 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, see <http://www.gnu.org/licenses/>.
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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(constant::mathematical::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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