81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.0
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Application
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engineSwirl
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Description
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Generates a swirling flow for engine calulations
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "mathematicalConstants.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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# include "setRootCase.H"
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# include "createTime.H"
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# include "createMesh.H"
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# include "createFields.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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scalar Vphi = (mathematicalConstant::pi*swirlRPMRatio*rpm/30).value();
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scalar b1 = j1(swirlProfile).value();
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scalar b2 = 2.0*b1/swirlProfile.value() - j0(swirlProfile).value();
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scalar omega = 0.125*(Vphi*bore*swirlProfile/b2).value();
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scalar cylinderRadius = 0.5*bore.value();
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scalar Umax = 0.0;
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forAll(mesh.C(), celli)
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{
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vector c = mesh.C()[celli] - swirlCenter;
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scalar r = ::pow(sqr(c & xT) + sqr(c & yT), 0.5);
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if (r <= cylinderRadius)
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{
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scalar b = j1(swirlProfile*r/cylinderRadius).value();
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scalar vEff = omega*b;
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r = max(r, SMALL);
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U[celli] = ((vEff/r)*(c & yT))*xT + (-(vEff/r)*(c & xT))*yT;
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Umax = max(Umax, mag(U[celli]));
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}
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}
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Info << "Umax = " << Umax << endl;
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U.write();
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Info << "\n end\n";
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return 0;
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}
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// ************************************************************************* //
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