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primitiveMeshTools: stabilize with VSMALL rather than SMALL to avoid problems with very small meshes

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Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1509
This commit is contained in:
Henry
2015-02-05 16:31:29 +00:00
parent 608145622b
commit 8e77fbc222
1 changed files with 5 additions and 115 deletions
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120
src/OpenFOAM/meshes/primitiveMesh/primitiveMeshCheck/primitiveMeshTools.C
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@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2012-2014 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2012-2015 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -47,7 +47,7 @@ Foam::scalar Foam::primitiveMeshTools::faceSkewness
// Skewness vector
vector sv =
Cpf
- ((fAreas[faceI] & Cpf)/((fAreas[faceI] & d) + SMALL))*d;
- ((fAreas[faceI] & Cpf)/((fAreas[faceI] & d) + VSMALL))*d;
vector svHat = sv/(mag(sv) + VSMALL);
// Normalisation distance calculated as the approximate distance
@ -64,6 +64,7 @@ Foam::scalar Foam::primitiveMeshTools::faceSkewness
return mag(sv)/fd;
}
Foam::scalar Foam::primitiveMeshTools::boundaryFaceSkewness
(
const primitiveMesh& mesh,
@ -196,6 +197,7 @@ Foam::tmp<Foam::scalarField> Foam::primitiveMeshTools::faceSkewness
return tskew;
}
void Foam::primitiveMeshTools::facePyramidVolume
(
const primitiveMesh& mesh,
@ -440,7 +442,7 @@ Foam::tmp<Foam::scalarField> Foam::primitiveMeshTools::faceFlatness
sumA += mag(n);
}
faceFlatness[faceI] = magAreas[faceI] / (sumA+VSMALL);
faceFlatness[faceI] = magAreas[faceI]/(sumA + VSMALL);
}
}
@ -448,116 +450,6 @@ Foam::tmp<Foam::scalarField> Foam::primitiveMeshTools::faceFlatness
}
//Foam::tmp<Foam::scalarField> Foam::primitiveMeshTools::edgeAlignment
//(
// const primitiveMesh& mesh,
// const Vector<label>& meshD,
// const pointField& p
//)
//{
// label nDirs = 0;
// for (direction cmpt=0; cmpt<vector::nComponents; cmpt++)
// {
// if (meshD[cmpt] == 1)
// {
// nDirs++;
// }
// else if (meshD[cmpt] != 0)
// {
// FatalErrorIn
// (
// "primitiveMeshTools::edgeAlignment"
// "(const primitiveMesh&, const Vector<label>&"
// ", const pointField&)"
// ) << "directions should contain 0 or 1 but is now " << meshD
// << exit(FatalError);
// }
// }
//
// tmp<scalarField> tedgeAlignment(new scalarField(mesh.nFaces(), 0.0));
// scalarField& edgeAlignment = tedgeAlignment();
//
// if (nDirs != vector::nComponents)
// {
// const faceList& fcs = mesh.faces();
//
// forAll(fcs, faceI)
// {
// const face& f = fcs[faceI];
//
// forAll(f, fp)
// {
// label p0 = f[fp];
// label p1 = f.nextLabel(fp);
// if (p0 < p1)
// {
// vector d(p[p1]-p[p0]);
// scalar magD = mag(d);
//
// if (magD > ROOTVSMALL)
// {
// d /= magD;
//
// // Check how many empty directions are used by the
// // edge.
// label nEmptyDirs = 0;
// label nNonEmptyDirs = 0;
// for
// (
// direction cmpt=0;
// cmpt<vector::nComponents;
// cmpt++
// )
// {
// if (mag(d[cmpt]) > 1e-6)
// {
// if (meshD[cmpt] == 0)
// {
// nEmptyDirs++;
// }
// else
// {
// nNonEmptyDirs++;
// }
// }
// }
//
// if (nEmptyDirs == 0)
// {
// // Purely in ok directions.
// }
// else if (nEmptyDirs == 1)
// {
// // Ok if purely in empty directions.
// if (nNonEmptyDirs > 0)
// {
// edgeAlignment[faceI] = max
// (
// edgeAlignment[faceI],
// 1
// );
// }
// }
// else if (nEmptyDirs > 1)
// {
// // Always an error
// edgeAlignment[faceI] = max
// (
// edgeAlignment[faceI],
// 2
// );
// }
// }
// }
// }
// }
// }
//
// return tedgeAlignment;
//}
// Checks cells with 1 or less internal faces. Give numerical problems.
Foam::tmp<Foam::scalarField> Foam::primitiveMeshTools::cellDeterminant
(
const primitiveMesh& mesh,
@ -581,8 +473,6 @@ Foam::tmp<Foam::scalarField> Foam::primitiveMeshTools::cellDeterminant
}
}
tmp<scalarField> tcellDeterminant(new scalarField(mesh.nCells()));
scalarField& cellDeterminant = tcellDeterminant();