148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
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/*---------------------------------------------------------------------------*\
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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) 2004-6 H. Jasak All rights reserved
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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 the
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Free Software Foundation; either version 2 of the License, or (at your
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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, write to the Free Software Foundation,
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Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Application
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viscoElasticStressedFoam
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Description
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Transient/steady-state segregated finite-volume solver for small strain
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visco elastic solid bodies.
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Displacement increment field DU is solved for using a total Lagrangian
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approach, also generating the strain tensor field epsilon and stress
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tensor field sigma.
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "rheologyModel.H"
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#include "OFstream.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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Info<< "\nCalculating displacement field\n" << endl;
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lduMatrix::debug = 0;
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scalar m = 0.5;
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for (runTime++; !runTime.end(); runTime++)
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{
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Info<< "Time: " << runTime.timeName() << nl << endl;
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# include "readStressedFoamControls.H"
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volScalarField mu =
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rheology.mu(m*runTime.deltaT().value());
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volScalarField lambda =
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rheology.lambda(m*runTime.deltaT().value());
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Info << "mu = " << average(mu.internalField()) << endl;
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Info << "lambda = " << average(lambda.internalField()) << endl;
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int iCorr = 0;
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lduMatrix::solverPerformance solverPerf;
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scalar initialResidual = 0;
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scalar residual = GREAT;
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do
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{
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DU.storePrevIter();
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fvVectorMatrix DUEqn
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(
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fvm::d2dt2(rho,DU)
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==
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fvm::laplacian(2*mu+lambda, DU, "laplacian(DDU,DU)")
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+ fvc::div
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(
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mu*gradDU.T()
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+ lambda*(I*tr(gradDU))
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- (mu + lambda)*gradDU
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+ DSigmaCorr,
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"div(sigma)"
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)
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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 "calculateDEpsilonDSigma.H"
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}
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while
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(
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solverPerf.initialResidual() > 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 residual = " << 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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U += DU;
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epsilon += DEpsilon;
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# include "calculateSigmaDSigmaCorr.H"
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# include "writeFields.H"
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Info<< "ExecutionTime = "
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<< runTime.elapsedCpuTime()
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<< " s\n\n" << 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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