95 lines
2.8 KiB
C
95 lines
2.8 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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Description
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Calculates the total forces on a patch:
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total force vector
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total normal force
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total force in each direction (x, y and z)
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Author
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philip.cardiff@ucd.ie
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.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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while(runTime.loop())
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{
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Info<< "Time: " << runTime.timeName() << nl << endl;
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volSymmTensorField sigma
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(
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IOobject
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(
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"sigma",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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),
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mesh
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);
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Info << nl;
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vector netForce = vector::zero;
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forAll(mesh.boundary(), patchID)
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{
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vectorField n = mesh.boundary()[patchID].nf();
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const vectorField& Sf = mesh.boundary()[patchID].Sf();
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const symmTensorField& sigmaPatch = sigma.boundaryField()[patchID];
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vector totalForce = sum(Sf & sigmaPatch);
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netForce += totalForce;
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scalar totalNormalForce = sum(n & (Sf & sigmaPatch));
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vector totalShearForce = sum((I -sqr(n)) & (Sf & sigmaPatch));
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Info << "Patch: " << mesh.boundary()[patchID].name() << nl
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<< "\tTotal Force:\t\t" << totalForce << " N\n"
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<< "\tTotal Normal Force:\t" << totalNormalForce << " N\n"
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<< "\tTotal Shear Force:\t" << totalShearForce << " N\n" << endl;
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}
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Info << nl << "Net force on model is " << netForce << " N" << endl;
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}
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Info << nl << "End" << endl;
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return 0;
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}
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// ************************************************************************* //
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