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

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     3.2
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
    This file is part of foam-extend.

    foam-extend 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 3 of the License, or (at your
    option) any later version.

    foam-extend 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 foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Application
    elasticNonLinTLSolidFoam

Description
    Finite volume structural solver employing a total strain total
    Lagrangian approach.

    Valid for finite strains, finite displacements and finite rotations.

Author
    Micheal Leonard
    Philip Cardiff

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

#include "fvCFD.H"
#include "constitutiveModel.H"
#include "solidInterface.H"

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

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

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

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

    while(runTime.loop())
    {
        Info<< "Time: " << runTime.timeName() << nl << endl;

#       include "readSolidMechanicsControls.H"

      int iCorr = 0;
      scalar initialResidual = 0;
      lduMatrix::solverPerformance solverPerf;
      scalar relativeResidual = 1.0;
      lduMatrix::debug = 0;

      do
      {
          U.storePrevIter();

          surfaceTensorField shearGradU
          (
              "shearGradU",
              (I - sqr(n)) & fvc::interpolate(gradU)
          );

          fvVectorMatrix UEqn
          (
              fvm::d2dt2(rho, U)
           ==
              fvm::laplacian(2*muf + lambdaf, U, "laplacian(DU,U)")
//             + fvc::div
//               (
//                   -(mu + lambda)*gradU
//                   + mu*gradU.T()
//                   + mu*(gradU & gradU.T())
//                   + lambda*tr(gradU)*I
//                   + 0.5*lambda*tr(gradU & gradU.T())*I
//                   + (sigma & gradU),
//                   "div(sigma)"
//               )
            + fvc::div
              (
                  mesh.magSf()*
                  (
                      - (muf + lambdaf)*(fvc::snGrad(U) & (I - n*n))
                      + lambdaf*tr(shearGradU & (I - n*n))*n
                      + muf*(shearGradU & n)
                      + muf*(n & fvc::interpolate(gradU & gradU.T()))
                      + 0.5*lambdaf*(n*tr(fvc::interpolate(gradU & gradU.T())))
                      + (n & fvc::interpolate(sigma & gradU))
                  )
              )
          );

          if (solidInterfaceCorr)
          {
              solidInterfacePtr->correct(UEqn);
          }

          solverPerf = UEqn.solve();

          if (iCorr == 0)
          {
              initialResidual = solverPerf.initialResidual();
          }

          U.relax();

          //gradU = solidInterfacePtr->grad(U);
          gradU = fvc::grad(U);

#         include "calculateEpsilonSigma.H"
#         include "calculateRelativeResidual.H"

          Info<< "\tTime " << runTime.value()
              << ", Corrector " << iCorr
              << ", Solving for " << U.name()
              << " using " << solverPerf.solverName()
              << ", residual = " << solverPerf.initialResidual()
              << ", relative residual = " << relativeResidual
              << ", inner iterations " << solverPerf.nIterations() << endl;
      }
      while
          (
              solverPerf.initialResidual() > convergenceTolerance
              //relativeResidual > convergenceTolerance
              &&
              ++iCorr < nCorr
              );

      Info<< nl << "Time " << runTime.value() << ", Solving for " << U.name()
          << ", Initial residual = " << initialResidual
          << ", Final residual = " << solverPerf.initialResidual()
          << ", Relative residual = " << relativeResidual
          << ", No outer iterations " << iCorr
          << nl << "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
          << "  ClockTime = " << runTime.elapsedClockTime() << " s"
          << endl;

#     include "writeFields.H"

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

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

    return(0);
}


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