175 lines
5.6 KiB
C++
175 lines
5.6 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.1
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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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viscoElasticSolidFoam
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Description
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visco-elastic small strain solver using finite volume method,
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using an incremental approach
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Author
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Zeljko Tukovic FSB Zagreb
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "constitutiveModel.H"
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//#include "componentReferenceList.H"
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//#include "patchToPatchInterpolation.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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# include "createHistory.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Info<< "\nStarting time loop\n" << endl;
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Info<< "Note: the results must be written for every time-step"
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<< " as they are used to calculate the current stress" << endl;
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lduMatrix::debug = 0;
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scalar m = 0.5;
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surfaceVectorField n = mesh.Sf()/mesh.magSf();
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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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# include "readSolidMechanicsControls.H"
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volScalarField mu = rheology.mu(m*runTime.deltaT().value());
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volScalarField lambda = rheology.lambda(m*runTime.deltaT().value());
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surfaceScalarField muf = fvc::interpolate(mu);
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surfaceScalarField lambdaf = fvc::interpolate(lambda);
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Info << "average mu = " << average(muf.internalField()) << endl;
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Info << "average lambda = " << average(lambdaf.internalField()) << endl;
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int iCorr = 0;
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lduSolverPerformance solverPerf;
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scalar initialResidual = 1.0;
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scalar residual = 1.0;
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surfaceSymmTensorField DSigmaCorrf = fvc::interpolate(DSigmaCorr);
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//label nCrackedFaces = 0;
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// cracking loop if you use cohesive boundaries
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//do
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//{
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do
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{
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surfaceTensorField sGradDU =
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(I - n*n)&fvc::interpolate(gradDU);
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DU.storePrevIter();
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fvVectorMatrix DUEqn
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(
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rho*fvm::d2dt2(DU)
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==
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fvm::laplacian(2*muf+lambdaf, DU, "laplacian(DDU,DU)")
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+ fvc::div
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(
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mesh.magSf()*
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(
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- (muf + lambdaf)*(fvc::snGrad(DU)&(I - n*n))
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+ lambdaf*tr(sGradDU&(I - n*n))*n
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+ muf*(sGradDU&n)
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+ (n&DSigmaCorrf)
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)
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)
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);
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// // add an increment of gravity on the first time-step
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// if (runTime.timeIndex() == 1)
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// {
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// DUEqn -= (rho*g);
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// }
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solverPerf = DUEqn.solve();
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DU.relax();
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if (iCorr == 0)
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{
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initialResidual = solverPerf.initialResidual();
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}
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gradDU = fvc::grad(DU);
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# include "calculateDSigma.H"
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# include "calcResidual.H"
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if (iCorr % infoFrequency == 0)
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{
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Info<< "\tTime " << runTime.value()
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<< ", Corrector " << iCorr
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<< ", Solving for " << U.name()
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<< " using " << solverPerf.solverName()
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<< ", res = " << solverPerf.initialResidual()
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<< ", rel res = " << residual
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<< ", inner iters = " << solverPerf.nIterations() << endl;
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}
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}
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while
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(
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// solverPerf.initialResidual() > convergenceTolerance
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residual > convergenceTolerance
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&& ++iCorr < nCorr
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);
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Info<< "Solving for " << DU.name() << " using "
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<< solverPerf.solverName() << " solver"
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<< ", Initial residula = " << initialResidual
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<< ", Final residual = " << solverPerf.initialResidual()
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<< ", No outer iterations " << iCorr
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<< ", Relative error: " << residual << endl;
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//# include "updateCrack.H"
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//}
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//while(nCrackedFaces > 0);
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U += DU;
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# include "calculateSigma.H"
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# include "writeFields.H"
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# include "writeHistory.H"
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Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
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<< " ClockTime = " << runTime.elapsedClockTime() << " s"
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<< nl << 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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