inverseDistanceDiffusivity.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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    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.

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#include "inverseDistanceDiffusivity.H"
#include <OpenFOAM/addToRunTimeSelectionTable.H>
#include <meshTools/patchWave.H>
#include <OpenFOAM/HashSet.H>
#include <finiteVolume/surfaceInterpolate.H>
#include <finiteVolume/zeroGradientFvPatchFields.H>

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

namespace Foam
{
    defineTypeNameAndDebug(inverseDistanceDiffusivity, 0);

    addToRunTimeSelectionTable
    (
        motionDiffusivity,
        inverseDistanceDiffusivity,
        Istream
    );
}


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

Foam::inverseDistanceDiffusivity::inverseDistanceDiffusivity
(
    const fvMotionSolver& mSolver,
    Istream& mdData
)
:
    uniformDiffusivity(mSolver, mdData),
    patchNames_(mdData)
{
    correct();
}


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

Foam::inverseDistanceDiffusivity::~inverseDistanceDiffusivity()
{}


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

Foam::tmp<Foam::scalarField> Foam::inverseDistanceDiffusivity::y() const
{
    const polyMesh& mesh = mSolver().mesh();

    labelHashSet patchSet(mesh.boundaryMesh().patchSet(patchNames_));

    if (patchSet.size())
    {
        return tmp<scalarField>
        (
            new scalarField(patchWave(mesh, patchSet, false).distance())
        );
    }
    else
    {
        return tmp<scalarField>(new scalarField(mesh.nCells(), 1.0));
    }
}


void Foam::inverseDistanceDiffusivity::correct()
{
    const fvMesh& mesh = mSolver().mesh();

    volScalarField y_
    (
        IOobject
        (
            "y",
            mesh.time().timeName(),
            mesh
        ),
        mesh,
        dimless,
        zeroGradientFvPatchScalarField::typeName
    );
    y_.internalField() = y();
    y_.correctBoundaryConditions();

    faceDiffusivity_ = 1.0/fvc::interpolate(y_);
}


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