186 lines
5.7 KiB
C
186 lines
5.7 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 3.2
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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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elasticSolidFoam
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Description
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Transient/steady-state segregated finite-volume solver for small strain
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elastic solid bodies.
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Displacement field U is solved for using a total Lagrangian approach,
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also generating the strain tensor field epsilon and stress tensor
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field sigma.
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With optional multi-material solid interface correction ensuring
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correct tractions on multi-material interfaces
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Author
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Philip Cardiff
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multi-material by Tukovic et al. 2012
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "constitutiveModel.H"
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#include "solidInterface.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 "readGravitationalAcceleration.H"
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# include "createFields.H"
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# include "createHistory.H"
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# include "readDivSigmaExpMethod.H"
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# include "createSolidInterfaceNoModify.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Info<< "\nStarting time loop\n" << endl;
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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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int iCorr = 0;
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lduSolverPerformance solverPerf;
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scalar initialResidual = 1.0;
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scalar relativeResidual = 1.0;
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// lduMatrix::debug = 0;
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if (predictor)
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{
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Info<< "\nPredicting U, gradU and snGradU based on V,"
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<< "gradV and snGradV\n" << endl;
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U += V*runTime.deltaT();
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gradU += gradV*runTime.deltaT();
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snGradU += snGradV*runTime.deltaT();
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}
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do
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{
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U.storePrevIter();
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# include "calculateDivSigmaExp.H"
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// linear momentum equation
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fvVectorMatrix UEqn
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(
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rho*fvm::d2dt2(U)
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==
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fvm::laplacian(2*muf + lambdaf, U, "laplacian(DU,U)")
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+ divSigmaExp
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+ rho*g
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);
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if (solidInterfaceCorr)
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{
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solidInterfacePtr->correct(UEqn);
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}
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solverPerf = UEqn.solve();
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if (iCorr == 0)
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{
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initialResidual = solverPerf.initialResidual();
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aitkenInitialRes = gMax(mag(U.internalField()));
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}
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if (aitkenRelax)
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{
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# include "aitkenRelaxation.H"
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}
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else
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{
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U.relax();
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}
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gradU = fvc::grad(U);
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# include "calculateRelativeResidual.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 = " << relativeResidual;
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if (aitkenRelax)
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{
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Info<< ", aitken = " << aitkenTheta;
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}
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Info<< ", 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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iCorr++ == 0
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||
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(
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solverPerf.initialResidual() > convergenceTolerance
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//relativeResidual > convergenceTolerance
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&& iCorr < nCorr
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)
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);
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Info<< nl << "Time " << runTime.value() << ", Solving for " << U.name()
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<< ", Initial residual = " << initialResidual
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<< ", Final residual = " << solverPerf.initialResidual()
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<< ", Relative residual = " << relativeResidual
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<< ", No outer iterations " << iCorr
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<< nl << "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
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<< " ClockTime = " << runTime.elapsedClockTime() << " s"
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<< endl;
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if (predictor)
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{
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V = fvc::ddt(U);
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gradV = fvc::ddt(gradU);
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snGradV = (snGradU - snGradU.oldTime())/runTime.deltaT();
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}
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# include "calculateEpsilonSigma.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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<< endl << 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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