nearWallDist.C

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    Copyright (C) 2011-2016 OpenFOAM Foundation
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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
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "nearWallDist.H"
#include "fvMesh.H"
#include "cellDistFuncs.H"
#include "wallFvPatch.H"
#include "surfaceFields.H"
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::nearWallDist::calculate()
{
    cellDistFuncs wallUtils(mesh_);
 
    // Get patch ids of walls
    labelHashSet wallPatchIDs(wallUtils.getPatchIDs<wallPolyPatch>());
 
    // Size neighbours array for maximum possible
 
    labelList neighbours(wallUtils.maxPatchSize(wallPatchIDs));
 
 
    // Correct all cells with face on wall
 
    const volVectorField& cellCentres = mesh_.C();
 
    forAll(mesh_.boundary(), patchi)
    {
        fvPatchScalarField& ypatch = operator[](patchi);
 
        const fvPatch& patch = mesh_.boundary()[patchi];
 
        if (isA<wallFvPatch>(patch))
        {
            const polyPatch& pPatch = patch.patch();
 
            const labelUList& faceCells = patch.faceCells();
 
            // Check cells with face on wall
            forAll(patch, patchFacei)
            {
                label nNeighbours = wallUtils.getPointNeighbours
                (
                    pPatch,
                    patchFacei,
                    neighbours
                );
 
                label minFacei = -1;
 
                ypatch[patchFacei] = wallUtils.smallestDist
                (
                    cellCentres[faceCells[patchFacei]],
                    pPatch,
                    nNeighbours,
                    neighbours,
                    minFacei
                );
            }
        }
        else
        {
            ypatch = 0.0;
        }
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::nearWallDist::nearWallDist(const Foam::fvMesh& mesh)
:
    volScalarField::Boundary
    (
        mesh.boundary(),
        mesh.V(),           // Dummy internal field,
        calculatedFvPatchScalarField::typeName
    ),
    mesh_(mesh)
{
    calculate();
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::nearWallDist::~nearWallDist()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::nearWallDist::correct()
{
    if (mesh_.topoChanging())
    {
        const DimensionedField<scalar, volMesh>& V = mesh_.V();
        const fvBoundaryMesh& bnd = mesh_.boundary();
 
        this->setSize(bnd.size());
        forAll(*this, patchi)
        {
            this->set
            (
                patchi,
                fvPatchField<scalar>::New
                (
                    calculatedFvPatchScalarField::typeName,
                    bnd[patchi],
                    V
                )
            );
        }
    }
 
    calculate();
}
 
 
// ************************************************************************* //