displacementSBRStressFvMotionSolver.C

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/*---------------------------------------------------------------------------*\
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     \\/     M anipulation  |
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License
    This file is part of OpenFOAM.

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#include "displacementSBRStressFvMotionSolver.H"
#include <fvMotionSolvers/motionDiffusivity.H>
#include <finiteVolume/fvmLaplacian.H>
#include <OpenFOAM/addToRunTimeSelectionTable.H>
#include <finiteVolume/fvcDiv.H>
#include <finiteVolume/fvcGrad.H>
#include <finiteVolume/surfaceInterpolate.H>
#include <finiteVolume/fvcLaplacian.H>
#include <OpenFOAM/mapPolyMesh.H>
#include <finiteVolume/volPointInterpolation.H>

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
    defineTypeNameAndDebug(displacementSBRStressFvMotionSolver, 0);

    addToRunTimeSelectionTable
    (
        fvMotionSolver,
        displacementSBRStressFvMotionSolver,
        dictionary
    );
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::displacementSBRStressFvMotionSolver::displacementSBRStressFvMotionSolver
(
    const polyMesh& mesh,
    Istream& is
)
:
    displacementFvMotionSolver(mesh, is),
    pointDisplacement_
    (
        IOobject
        (
            "pointDisplacement",
            fvMesh_.time().timeName(),
            fvMesh_,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        pointMesh::New(fvMesh_)
    ),
    cellDisplacement_
    (
        IOobject
        (
            "cellDisplacement",
            mesh.time().timeName(),
            mesh,
            IOobject::READ_IF_PRESENT,
            IOobject::AUTO_WRITE
        ),
        fvMesh_,
        dimensionedVector
        (
            "cellDisplacement",
            pointDisplacement_.dimensions(),
            vector::zero
        ),
        cellMotionBoundaryTypes<vector>(pointDisplacement_.boundaryField())
    ),
    diffusivityPtr_
    (
        motionDiffusivity::New(*this, lookup("diffusivity"))
    )
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::displacementSBRStressFvMotionSolver::
~displacementSBRStressFvMotionSolver()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

Foam::tmp<Foam::pointField>
Foam::displacementSBRStressFvMotionSolver::curPoints() const
{
    volPointInterpolation::New(fvMesh_).interpolate
    (
        cellDisplacement_,
        pointDisplacement_
    );

    tmp<pointField> tcurPoints
    (
        points0() + pointDisplacement_.internalField()
    );

    twoDCorrectPoints(tcurPoints());

    return tcurPoints;
}


void Foam::displacementSBRStressFvMotionSolver::solve()
{
    // The points have moved so before interpolation update
    // the fvMotionSolver accordingly
    movePoints(fvMesh_.points());

    diffusivityPtr_->correct();
    pointDisplacement_.boundaryField().updateCoeffs();

    surfaceScalarField Df = diffusivityPtr_->operator()();

    volTensorField gradCd = fvc::grad(cellDisplacement_);

    Foam::solve
    (
        fvm::laplacian
        (
            2*Df,
            cellDisplacement_,
            "laplacian(diffusivity,cellDisplacement)"
        )

      + fvc::div
        (
            Df
           *(
               (
                   cellDisplacement_.mesh().Sf()
                 & fvc::interpolate(gradCd.T() - gradCd)
               )

               // Solid-body rotation "lambda" term
             - cellDisplacement_.mesh().Sf()*fvc::interpolate(tr(gradCd))
            )
        )

        /*
      - fvc::laplacian
        (
            2*Df,
            cellDisplacement_,
            "laplacian(diffusivity,cellDisplacement)"
        )

      + fvc::div
        (
            Df
           *(
               (
                   cellDisplacement_.mesh().Sf()
                 & fvc::interpolate(gradCd + gradCd.T())
               )

               // Solid-body rotation "lambda" term
             - cellDisplacement_.mesh().Sf()*fvc::interpolate(tr(gradCd))
           )
        )
        */
    );
}


void Foam::displacementSBRStressFvMotionSolver::updateMesh
(
    const mapPolyMesh& mpm
)
{
    displacementFvMotionSolver::updateMesh(mpm);

    // Update diffusivity. Note two stage to make sure old one is de-registered
    // before creating/registering new one.
    diffusivityPtr_.reset(NULL);
    diffusivityPtr_ = motionDiffusivity::New(*this, lookup("diffusivity"));
}


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