foam-extend4.1-coherent-io/applications/solvers/solidMechanics/viscoElasticSolidFoam/viscoElasticSolidFoam.C

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2004-6 H. Jasak All rights reserved
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM; if not, write to the Free Software Foundation,
    Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Application
    viscoElasticSolidFoam

Description
    visco-elastic small strain solver using finite volume method,
    using an incremental approach

Author
    Zeljko Tukovic FSB Zagreb

\*---------------------------------------------------------------------------*/

#include "fvCFD.H"
#include "constitutiveModel.H"
//#include "componentReferenceList.H"
//#include "patchToPatchInterpolation.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

int main(int argc, char *argv[])
{
#   include "setRootCase.H"
#   include "createTime.H"
#   include "createMesh.H"
#   include "createFields.H"
#   include "createHistory.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

    Info<< "\nStarting time loop\n" << endl;

    Info << "Note: the results must be written for every time-step"
	 << " as they are used to calculate the current stress" << endl;

    lduMatrix::debug = 0;
    scalar m = 0.5;
    surfaceVectorField n = mesh.Sf()/mesh.magSf();

    for (runTime++; !runTime.end(); runTime++)
    {
        Info<< "Time: " << runTime.timeName() << nl << endl;

#       include "readSolidMechanicsControls.H"

        volScalarField mu = rheology.mu(m*runTime.deltaT().value());
        volScalarField lambda = rheology.lambda(m*runTime.deltaT().value());
        surfaceScalarField muf = fvc::interpolate(mu);
        surfaceScalarField lambdaf = fvc::interpolate(lambda);
        Info << "average mu = " << average(muf.internalField()) << endl;
        Info << "average lambda = " << average(lambdaf.internalField()) << endl;

        int iCorr = 0;
        lduMatrix::solverPerformance solverPerf;
        scalar initialResidual = 1.0;
        scalar residual = 1.0;
        surfaceSymmTensorField DSigmaCorrf = fvc::interpolate(DSigmaCorr);
	label nCrackedFaces = 0;
        
	// cracking loop if you use cohesive boundaries
	//do
	//{
            do
	      {
                surfaceTensorField sGradDU =
		  (I - n*n)&fvc::interpolate(gradDU);
		
                DU.storePrevIter();
		
                fvVectorMatrix DUEqn
		  (
		   rho*fvm::d2dt2(DU)
		   ==
		   fvm::laplacian(2*muf+lambdaf, DU, "laplacian(DDU,DU)")
		   + fvc::div
		   (
		    mesh.magSf()
		    *(
		      - (muf + lambdaf)*(fvc::snGrad(DU)&(I - n*n))
		      + lambdaf*tr(sGradDU&(I - n*n))*n
		      + muf*(sGradDU&n)
		      + (n&DSigmaCorrf)
		      )
                    )
		   );
		
// 		// add an increment of gravity on the first time-step
// 		if(runTime.timeIndex() == 1)
// 		  {
// 		    DUEqn -= (rho*g);
// 		  }

                solverPerf = DUEqn.solve();
		
                DU.relax();
		
                if(iCorr == 0)
		  {
                    initialResidual = solverPerf.initialResidual();
                }

                gradDU = fvc::grad(DU);
                
#               include "calculateDSigma.H"
#               include "calcResidual.H"

		if(iCorr % infoFrequency == 0)
		  {
		    Info << "\tTime " << runTime.value()
			 << ", Corrector " << iCorr
			 << ", Solving for " << U.name()
			 << " using " << solverPerf.solverName()
			 << ", res = " << solverPerf.initialResidual()
			 << ", rel res = " << residual
			 << ", inner iters = " << solverPerf.nIterations() << endl;
		  }
            }
            while
            (
	     // solverPerf.initialResidual() > convergenceTolerance
	     residual > convergenceTolerance 
             && ++iCorr < nCorr
            );
	    
            Info << "Solving for " << DU.name() << " using "
		 << solverPerf.solverName() << " solver"
		 << ", Initial residula = " << initialResidual
		 << ", Final residual = " << solverPerf.initialResidual()
		 << ", No outer iterations " << iCorr
		 << ", Relative error: " << residual << endl;

	    //#           include "updateCrack.H"
	    //}
	    //while(nCrackedFaces > 0);

	U += DU;
	    
#       include "calculateSigma.H"
#       include "writeFields.H"
#       include "writeHistory.H"

        Info<< "ExecutionTime = "
            << runTime.elapsedCpuTime()
            << " s\n\n" << endl;
    }

    Info<< "End\n" << endl;

    return(0);
}


// ************************************************************************* //