movingWallVelocityFvPatchVectorField.C

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#include "movingWallVelocityFvPatchVectorField.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "fvcMeshPhi.H"
#include "addToRunTimeSelectionTable.H"

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

Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchVectorField(p, iF)
{}


Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchVectorField(p, iF, dict)
{}


Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const movingWallVelocityFvPatchVectorField& ptf,
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedValueFvPatchVectorField(ptf, p, iF, mapper)
{}


Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const movingWallVelocityFvPatchVectorField& mwvpvf,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchVectorField(mwvpvf, iF)
{}


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

void Foam::movingWallVelocityFvPatchVectorField::updateCoeffs()
{
    if (updated())
    {
        return;
    }

    const fvMesh& mesh = internalField().mesh();

    if (mesh.moving())
    {
        const fvPatch& p = patch();
        const polyPatch& pp = p.patch();
        const pointField& oldPoints = mesh.oldPoints();

        vectorField oldFc(pp.size());

        forAll(oldFc, i)
        {
            oldFc[i] = pp[i].centre(oldPoints);
        }

        const scalar deltaT = mesh.time().deltaTValue();

        const vectorField Up((pp.faceCentres() - oldFc)/deltaT);

        const volVectorField& U =
            static_cast<const volVectorField&>(internalField());

        const scalarField phip(fvc::meshPhi(U, p.index()));

        const vectorField n(p.nf());
        const scalarField& magSf = p.magSf();
        tmp<scalarField> Un = phip/(magSf + vSmall);

        vectorField::operator=(Up + n*(Un - (n & Up)));
    }

    fixedValueFvPatchVectorField::updateCoeffs();
}


void Foam::movingWallVelocityFvPatchVectorField::write(Ostream& os) const
{
    fvPatchVectorField::write(os);
    writeEntry(os, "value", *this);
}


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

namespace Foam
{
    makePatchTypeField
    (
        fvPatchVectorField,
        movingWallVelocityFvPatchVectorField
    );
}

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