93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration | Website: https://openfoam.org
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\\ / A nd | Copyright (C) 2011-2021 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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Test-Function1
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Description
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Tests Function1
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\*---------------------------------------------------------------------------*/
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#include "Function1.H"
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#include "IFstream.H"
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#include "OFstream.H"
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#include "ListOps.H"
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#include "argList.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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argList::validArgs.append("dictionary");
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argList args(argc, argv);
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const word dictName(args[1]);
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Info<< "Reading " << dictName << nl << endl;
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const dictionary dict = IFstream(dictName)();
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Info<< "Constructing the function\n" << endl;
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const autoPtr<Function1<scalar>> functionPtr =
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Function1<scalar>::New("function", dict);
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const Function1<scalar>& function = functionPtr();
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const scalar x0 = dict.lookup<scalar>("x0");
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const scalar x1 = dict.lookup<scalar>("x1");
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const label nX = dict.lookup<label>("nX");
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const scalar dx = (x1 - x0)/(nX - 1);
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const scalarField xs
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(
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x0 + dx*List<scalar>(identity(nX))
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);
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Info<< "Calculating values\n" << endl;
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const scalarField ys(function.value(xs));
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const scalarField integralYs(function.integral(scalarField(nX, x0), xs));
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scalarField trapezoidIntegralYs(nX, 0);
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for (label i = 1; i < nX; ++ i)
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{
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trapezoidIntegralYs[i] =
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trapezoidIntegralYs[i-1] + (ys[i] + ys[i-1])/2*dx;
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}
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OFstream dataFile(dictName + ".dat");
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Info<< "Writing to " << dataFile.name() << "\n" << endl;
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dataFile<< "# x y integralY trapezoidIntegralY" << endl;
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forAll(xs, i)
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{
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dataFile
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<< xs[i] << ' '
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<< ys[i] << ' '
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<< integralYs[i] << ' '
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<< trapezoidIntegralYs[i] << endl;
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}
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Info<< "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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