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cellQuality.C
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cellQuality.C
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
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.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "cellQuality.H"
#include "unitConversion.H"
#include "SubField.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::cellQuality::cellQuality(const polyMesh& mesh)
:
mesh_(mesh)
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::tmp<Foam::scalarField> Foam::cellQuality::nonOrthogonality() const
{
tmp<scalarField> tresult
(
new scalarField
(
mesh_.nCells(), 0.0
)
);
scalarField& result = tresult.ref();
scalarField sumArea(mesh_.nCells(), 0.0);
const vectorField& centres = mesh_.cellCentres();
const vectorField& areas = mesh_.faceAreas();
const labelList& own = mesh_.faceOwner();
const labelList& nei = mesh_.faceNeighbour();
forAll(nei, facei)
{
vector d = centres[nei[facei]] - centres[own[facei]];
vector s = areas[facei];
scalar magS = mag(s);
scalar cosDDotS =
radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
result[own[facei]] = max(cosDDotS, result[own[facei]]);
result[nei[facei]] = max(cosDDotS, result[nei[facei]]);
}
forAll(mesh_.boundaryMesh(), patchi)
{
const labelUList& faceCells =
mesh_.boundaryMesh()[patchi].faceCells();
const vectorField::subField faceCentres =
mesh_.boundaryMesh()[patchi].faceCentres();
const vectorField::subField faceAreas =
mesh_.boundaryMesh()[patchi].faceAreas();
forAll(faceCentres, facei)
{
vector d = faceCentres[facei] - centres[faceCells[facei]];
vector s = faceAreas[facei];
scalar magS = mag(s);
scalar cosDDotS =
radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
result[faceCells[facei]] = max(cosDDotS, result[faceCells[facei]]);
}
}
return tresult;
}
Foam::tmp<Foam::scalarField> Foam::cellQuality::skewness() const
{
tmp<scalarField> tresult
(
new scalarField
(
mesh_.nCells(), 0.0
)
);
scalarField& result = tresult.ref();
scalarField sumArea(mesh_.nCells(), 0.0);
const vectorField& cellCtrs = mesh_.cellCentres();
const vectorField& faceCtrs = mesh_.faceCentres();
const vectorField& areas = mesh_.faceAreas();
const labelList& own = mesh_.faceOwner();
const labelList& nei = mesh_.faceNeighbour();
forAll(nei, facei)
{
scalar dOwn = mag
(
(faceCtrs[facei] - cellCtrs[own[facei]]) & areas[facei]
)/mag(areas[facei]);
scalar dNei = mag
(
(cellCtrs[nei[facei]] - faceCtrs[facei]) & areas[facei]
)/mag(areas[facei]);
point faceIntersection =
cellCtrs[own[facei]]
+ (dOwn/(dOwn+dNei))*(cellCtrs[nei[facei]] - cellCtrs[own[facei]]);
scalar skewness =
mag(faceCtrs[facei] - faceIntersection)
/(mag(cellCtrs[nei[facei]] - cellCtrs[own[facei]]) + VSMALL);
result[own[facei]] = max(skewness, result[own[facei]]);
result[nei[facei]] = max(skewness, result[nei[facei]]);
}
forAll(mesh_.boundaryMesh(), patchi)
{
const labelUList& faceCells =
mesh_.boundaryMesh()[patchi].faceCells();
const vectorField::subField faceCentres =
mesh_.boundaryMesh()[patchi].faceCentres();
const vectorField::subField faceAreas =
mesh_.boundaryMesh()[patchi].faceAreas();
forAll(faceCentres, facei)
{
vector n = faceAreas[facei]/mag(faceAreas[facei]);
point faceIntersection =
cellCtrs[faceCells[facei]]
+ ((faceCentres[facei] - cellCtrs[faceCells[facei]])&n)*n;
scalar skewness =
mag(faceCentres[facei] - faceIntersection)
/(
mag(faceCentres[facei] - cellCtrs[faceCells[facei]])
+ VSMALL
);
result[faceCells[facei]] = max(skewness, result[faceCells[facei]]);
}
}
return tresult;
}
Foam::tmp<Foam::scalarField> Foam::cellQuality::faceNonOrthogonality() const
{
tmp<scalarField> tresult
(
new scalarField
(
mesh_.nFaces(), 0.0
)
);
scalarField& result = tresult.ref();
const vectorField& centres = mesh_.cellCentres();
const vectorField& areas = mesh_.faceAreas();
const labelList& own = mesh_.faceOwner();
const labelList& nei = mesh_.faceNeighbour();
forAll(nei, facei)
{
vector d = centres[nei[facei]] - centres[own[facei]];
vector s = areas[facei];
scalar magS = mag(s);
scalar cosDDotS =
radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
result[facei] = cosDDotS;
}
label globalFacei = mesh_.nInternalFaces();
forAll(mesh_.boundaryMesh(), patchi)
{
const labelUList& faceCells =
mesh_.boundaryMesh()[patchi].faceCells();
const vectorField::subField faceCentres =
mesh_.boundaryMesh()[patchi].faceCentres();
const vectorField::subField faceAreas =
mesh_.boundaryMesh()[patchi].faceAreas();
forAll(faceCentres, facei)
{
vector d = faceCentres[facei] - centres[faceCells[facei]];
vector s = faceAreas[facei];
scalar magS = mag(s);
scalar cosDDotS =
radToDeg(Foam::acos(min(1.0, (d & s)/(mag(d)*magS + VSMALL))));
result[globalFacei++] = cosDDotS;
}
}
return tresult;
}
Foam::tmp<Foam::scalarField> Foam::cellQuality::faceSkewness() const
{
tmp<scalarField> tresult
(
new scalarField
(
mesh_.nFaces(), 0.0
)
);
scalarField& result = tresult.ref();
const vectorField& cellCtrs = mesh_.cellCentres();
const vectorField& faceCtrs = mesh_.faceCentres();
const vectorField& areas = mesh_.faceAreas();
const labelList& own = mesh_.faceOwner();
const labelList& nei = mesh_.faceNeighbour();
forAll(nei, facei)
{
scalar dOwn = mag
(
(faceCtrs[facei] - cellCtrs[own[facei]]) & areas[facei]
)/mag(areas[facei]);
scalar dNei = mag
(
(cellCtrs[nei[facei]] - faceCtrs[facei]) & areas[facei]
)/mag(areas[facei]);
point faceIntersection =
cellCtrs[own[facei]]
+ (dOwn/(dOwn+dNei))*(cellCtrs[nei[facei]] - cellCtrs[own[facei]]);
result[facei] =
mag(faceCtrs[facei] - faceIntersection)
/(mag(cellCtrs[nei[facei]] - cellCtrs[own[facei]]) + VSMALL);
}
label globalFacei = mesh_.nInternalFaces();
forAll(mesh_.boundaryMesh(), patchi)
{
const labelUList& faceCells =
mesh_.boundaryMesh()[patchi].faceCells();
const vectorField::subField faceCentres =
mesh_.boundaryMesh()[patchi].faceCentres();
const vectorField::subField faceAreas =
mesh_.boundaryMesh()[patchi].faceAreas();
forAll(faceCentres, facei)
{
vector n = faceAreas[facei]/mag(faceAreas[facei]);
point faceIntersection =
cellCtrs[faceCells[facei]]
+ ((faceCentres[facei] - cellCtrs[faceCells[facei]])&n)*n;
result[globalFacei++] =
mag(faceCentres[facei] - faceIntersection)
/(
mag(faceCentres[facei] - cellCtrs[faceCells[facei]])
+ VSMALL
);
}
}
return tresult;
}
// ************************************************************************* //