203 lines
5.5 KiB
C
203 lines
5.5 KiB
C
/*---------------------------------------------------------------------------*\
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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) 2004-2007 Hrvoje Jasak
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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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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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#include "clipGauge.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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# 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 "readStressedFoamControls.H"
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int iCorr = 0;
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scalar initialResidual = 0;
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lduMatrix::solverPerformance solverPerf;
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scalar relativeResidual = 1;
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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, 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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);
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// if(thirdOrderCorrection)
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// {
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// # include "calculateThirdOrderDissipativeTerm.H"
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// UEqn -= divThirdOrderTerm;
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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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// if(relaxEqn)
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// {
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// UEqn.relax();
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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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// now use out leastSquaresSolidInterface grad scheme
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// if(solidInterfaceCorr)
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// {
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// gradU = solidInterfacePtr->grad(U);
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// }
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// else
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// {
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gradU = fvc::grad(U);
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// }
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//gradU = solidInterfacePtr->grad(U);
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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) Info << ", aitken = " << aitkenTheta;
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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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(solverPerf.initialResidual() > convergenceTolerance
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//relativeResidual > convergenceTolerance
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&&
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iCorr < nCorr)
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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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lduMatrix::debug=0;
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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 = "
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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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