rigidBodyDisplacement_pointMeshMover.C

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License
    This file is part of OpenFOAM.
 
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    the Free Software Foundation, either version 3 of the License, or
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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "rigidBodyDisplacement_pointMeshMover.H"
#include "polyMesh.H"
#include "polyTopoChangeMap.H"
#include "pointConstraints.H"
#include "timeIOdictionary.H"
#include "uniformDimensionedFields.H"
#include "forces.H"
#include "OneConstant.H"
#include "mathematicalConstants.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace pointMeshMovers
{
    defineTypeNameAndDebug(rigidBodyDisplacement, 0);
 
    addToRunTimeSelectionTable
    (
        pointMeshMover,
        rigidBodyDisplacement,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::pointMeshMovers::rigidBodyDisplacement::bodyMesh::bodyMesh
(
    const polyMesh& mesh,
    const word& name,
    const label bodyID,
    const dictionary& dict
)
:
    name_(name),
    bodyIndex_(bodyID),
    patches_(wordReList(dict.lookup("patches"))),
    patchSet_(mesh.boundary().patchSet(patches_))
{}
 
 
Foam::pointMeshMovers::rigidBodyDisplacement::rigidBodyDisplacement
(
    const polyMesh& mesh,
    const dictionary& dict
)
:
    pointMeshMover(mesh, typeName),
    RBD::rigidBodyMotion
    (
        dict,
        typeIOobject<timeIOdictionary>
        (
            "rigidBodyMotionState",
            mesh.time().name(),
            "uniform",
            mesh
        ).headerOk()
      ? timeIOdictionary
        (
            IOobject
            (
                "rigidBodyMotionState",
                mesh.time().name(),
                "uniform",
                mesh,
                IOobject::READ_IF_PRESENT,
                IOobject::NO_WRITE,
                false
            )
        )
      : dict
    ),
    test_(dict.lookupOrDefault<Switch>("test", false)),
    nIter_(test_ ? dict.lookup<label>("nIter") : 0),
    rhoInf_(1.0),
    rhoName_(dict.lookupOrDefault<word>("rho", "rho")),
    ramp_(nullptr),
    curTimeIndex_(-1),
    meshSolverPtr_
    (
        pointMeshMover::New
        (
            mesh,
            IOdictionary
            (
                IOobject
                (
                    typedName("meshSolver"),
                    mesh.time().constant(),
                    mesh
                ),
                dict.subDict("meshSolver")
            )
        )
    ),
    meshSolver_(refCast<pointMeshMovers::displacement>(meshSolverPtr_()))
{
    if (rhoName_ == "rhoInf")
    {
        rhoInf_ = dict.lookup<scalar>("rhoInf");
    }
 
    if (dict.found("ramp"))
    {
        ramp_ = Function1<scalar>::New("ramp", dimTime, dimless, dict);
    }
    else
    {
        ramp_ = new Function1s::OneConstant<scalar>("ramp");
    }
 
    const dictionary& bodiesDict = dict.subDict("bodies");
 
    forAllConstIter(IDLList<entry>, bodiesDict, iter)
    {
        const dictionary& bodyDict = iter().dict();
 
        if (bodyDict.found("patches"))
        {
            const label bodyID = this->bodyIndex(iter().keyword());
 
            if (bodyID == -1)
            {
                FatalErrorInFunction
                    << "Body " << iter().keyword()
                    << " has been merged with another body"
                       " and cannot be assigned a set of patches"
                    << exit(FatalError);
            }
 
            bodyMeshes_.append
            (
                new bodyMesh
                (
                    mesh,
                    iter().keyword(),
                    bodyID,
                    bodyDict
                )
            );
        }
    }
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::pointMeshMovers::rigidBodyDisplacement::~rigidBodyDisplacement()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::pointField>
Foam::pointMeshMovers::rigidBodyDisplacement::newPoints()
{
    const Time& t = poly().time();
 
    if (poly().nPoints() != meshSolver_.points0().size())
    {
        FatalErrorInFunction
            << "The number of points in the mesh seems to have changed." << endl
            << "In constant/polyMesh there are " << meshSolver_.points0().size()
            << " points; in the current mesh there are " << poly().nPoints()
            << " points." << exit(FatalError);
    }
 
    // Store the motion state at the beginning of the time-step
    if (curTimeIndex_ != t.timeIndex())
    {
        newTime();
        curTimeIndex_ = t.timeIndex();
    }
 
    const scalar ramp = ramp_->value(t.value());
 
    if (poly().foundObject<uniformDimensionedVectorField>("g"))
    {
        g() =
            ramp
           *poly().lookupObject<uniformDimensionedVectorField>("g").value();
    }
 
    if (test_)
    {
        for (label i=0; i<nIter_; i++)
        {
            RBD::rigidBodyMotion::solve
            (
                t.value(),
                t.deltaTValue(),
                scalarField(nDoF(), Zero),
                Field<spatialVector>(nBodies(), Zero)
            );
        }
    }
    else
    {
        Field<spatialVector> fx(nBodies(), Zero);
 
        forAll(bodyMeshes_, bi)
        {
            const label bodyID = bodyMeshes_[bi].bodyIndex_;
 
            functionObjects::forces f
            (
                functionObjects::forces::typeName,
                t,
                dictionary::entries
                (
                    "type", functionObjects::forces::typeName,
                    "patches", bodyMeshes_[bi].patches_,
                    "rhoInf", rhoInf_,
                    "rho", rhoName_,
                    "CofR", vector::zero
                )
            );
 
            f.calcForcesMoments();
 
            fx[bodyID] = ramp*spatialVector(f.momentEff(), f.forceEff());
        }
 
        RBD::rigidBodyMotion::solve
        (
            t.value(),
            t.deltaTValue(),
            scalarField(nDoF(), Zero),
            fx
        );
    }
 
    if (Pstream::master() && report())
    {
        forAll(bodyMeshes_, bi)
        {
            status(bodyMeshes_[bi].bodyIndex_);
        }
    }
 
    // Update the displacements
    forAll(bodyMeshes_, bi)
    {
        forAllConstIter(labelHashSet, bodyMeshes_[bi].patchSet_, iter)
        {
            const label patchi = iter.key();
 
            const pointField patchPoints0
            (
                meshSolver_.pointDisplacement().boundaryField()[patchi]
               .patchInternalField(meshSolver_.points0())
            );
 
            meshSolver_.pointDisplacement().boundaryFieldRef()[patchi] ==
            (
                Foam::transformPoints
                (
                    transform0(bodyMeshes_[bi].bodyIndex_),
                    patchPoints0
                ) - patchPoints0
            )();
        }
    }
 
    return meshSolver_.newPoints();
}
 
 
void Foam::pointMeshMovers::rigidBodyDisplacement::movePoints
(
    const pointField& points
)
{
    meshSolverPtr_->movePoints(points);
}
 
 
void Foam::pointMeshMovers::rigidBodyDisplacement::topoChange
(
    const polyTopoChangeMap& map
)
{
    meshSolverPtr_->topoChange(map);
}
 
 
void Foam::pointMeshMovers::rigidBodyDisplacement::mapMesh
(
    const polyMeshMap& map
)
{
    meshSolverPtr_->mapMesh(map);
}
 
 
void Foam::pointMeshMovers::rigidBodyDisplacement::distribute
(
    const polyDistributionMap& map
)
{
    meshSolverPtr_->distribute(map);
}
 
 
bool Foam::pointMeshMovers::rigidBodyDisplacement::write() const
{
    timeIOdictionary dict
    (
        IOobject
        (
            "rigidBodyMotionState",
            poly().time().name(),
            "uniform",
            poly(),
            IOobject::NO_READ,
            IOobject::NO_WRITE,
            false
        )
    );
 
    state().write(dict);
 
    return
        pointMeshMover::write()
     && dict.regIOobject::writeObject
        (
            IOstream::ASCII,
            IOstream::currentVersion,
            poly().time().writeCompression(),
            true
        );
}
 
 
// ************************************************************************* //