DASolidDisplacementFoam.C

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/*---------------------------------------------------------------------------*\
 
    DAFoam  : Discrete Adjoint with OpenFOAM
    Version : v3
 
    This class is modified from OpenFOAM's source code
    applications/solvers/stressAnalysis/solidDisplacementFoam
 
    OpenFOAM: The Open Source CFD Toolbox
 
    Copyright (C): 2011-2016 OpenFOAM Foundation
 
    OpenFOAM License:
 
        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 3 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, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "DASolidDisplacementFoam.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
defineTypeNameAndDebug(DASolidDisplacementFoam, 0);
addToRunTimeSelectionTable(DASolver, DASolidDisplacementFoam, dictionary);
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
DASolidDisplacementFoam::DASolidDisplacementFoam(
    char* argsAll,
    PyObject* pyOptions)
    : DASolver(argsAll, pyOptions),
      mechanicalPropertiesPtr_(nullptr),
      rhoPtr_(nullptr),
      muPtr_(nullptr),
      lambdaPtr_(nullptr),
      EPtr_(nullptr),
      nuPtr_(nullptr),
      DPtr_(nullptr),
      sigmaDPtr_(nullptr),
      gradDPtr_(nullptr),
      divSigmaExpPtr_(nullptr)
{
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
void DASolidDisplacementFoam::initSolver()
{
    /*
    Description:
        Initialize variables for DASolver
    */
 
    Info << "Initializing fields for DASolidDisplacementFoam" << endl;
    Time& runTime = runTimePtr_();
    fvMesh& mesh = meshPtr_();
#include "createControlsSolidDisplacement.H"
#include "createFieldsSolidDisplacement.H"
#include "createAdjointSolid.H"
    // initialize checkMesh
    daCheckMeshPtr_.reset(new DACheckMesh(daOptionPtr_(), runTime, mesh));
 
    daLinearEqnPtr_.reset(new DALinearEqn(mesh, daOptionPtr_()));
 
    this->setDAObjFuncList();
}
 
label DASolidDisplacementFoam::solvePrimal(
    const Vec xvVec,
    Vec wVec)
{
    /*
    Description:
        Call the primal solver to get converged state variables
 
    Input:
        xvVec: a vector that contains all volume mesh coordinates
 
    Output:
        wVec: state variable vector
    */
 
#include "createRefsSolidDisplacement.H"
 
    // change the run status
    daOptionPtr_->setOption<word>("runStatus", "solvePrimal");
 
    Info << "\nCalculating displacement field\n"
         << endl;
 
    // deform the mesh based on the xvVec
    this->pointVec2OFMesh(xvVec);
 
    // check mesh quality
    label meshOK = this->checkMesh();
 
    if (!meshOK)
    {
        this->writeFailedMesh();
        return 1;
    }
 
    primalMinRes_ = 1e10;
    label printInterval = daOptionPtr_->getOption<label>("printInterval");
    label printToScreen = 0;
    while (this->loop(runTime)) // using simple.loop() will have seg fault in parallel
    {
 
        printToScreen = this->isPrintTime(runTime, printInterval);
 
        if (printToScreen)
        {
            Info << "Iteration = " << runTime.value() << nl << endl;
        }
 
        label iCorr = 0;
        scalar initialResidual = 0;
 
        do
        {
            fvVectorMatrix DEqn(
                fvm::d2dt2(D)
                == fvm::laplacian(2 * mu + lambda, D, "laplacian(DD,D)")
                    + divSigmaExp);
 
            // get the solver performance info such as initial
            // and final residuals
            SolverPerformance<vector> solverU = DEqn.solve();
            initialResidual = solverU.max().initialResidual();
 
            this->primalResidualControl<vector>(solverU, printToScreen, printInterval, "U");
 
            if (!compactNormalStress_)
            {
                divSigmaExp = fvc::div(DEqn.flux());
            }
 
            gradD = fvc::grad(D);
            sigmaD = mu * twoSymm(gradD) + (lambda * I) * tr(gradD);
 
            if (compactNormalStress_)
            {
                divSigmaExp = fvc::div(
                    sigmaD - (2 * mu + lambda) * gradD,
                    "div(sigmaD)");
            }
            else
            {
                divSigmaExp += fvc::div(sigmaD);
            }
 
        } while (initialResidual > convergenceTolerance_ && ++iCorr < nCorr_);
 
        if (printToScreen)
        {
            this->printAllObjFuncs();
            Info << "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
                 << "  ClockTime = " << runTime.elapsedClockTime() << " s"
                 << nl << endl;
        }
 
        runTime.write();
 
    }
 
#include "calculateStressSolidDisplacement.H"
 
    this->calcPrimalResidualStatistics("print");
 
    // primal converged, assign the OpenFoam fields to the state vec wVec
    this->ofField2StateVec(wVec);
 
    // write the mesh to files
    mesh.write();
 
    Info << "End\n"
         << endl;
 
    return this->checkResidualTol();
}
 
} // End namespace Foam
 
// ************************************************************************* //