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Corrected delta coefficients and weighting factors on coupled patches. Henrik Rusche

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This commit is contained in:
Hrvoje Jasak 2011-08-24 13:40:10 +01:00
parent b701b9a1ef
commit 13c475a5a9
6 changed files with 89 additions and 32 deletions
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18
src/finiteVolume/fvMesh/fvPatches/constraint/cyclic/cyclicFvPatch.C
View file

@ -46,7 +46,12 @@ void cyclicFvPatch::makeWeights(scalarField& w) const
{
const scalarField& magFa = magSf();
scalarField deltas = nf() & fvPatch::delta();
// Note: mag in the dot-product.
// For all valid meshes, the non-orthogonality will be less that
// 90 deg and the dot-product will be positive. For invalid
// meshes (d & s <= 0), this will stabilise the calculation
// but the result will be poor. HJ, 24/Aug/2011
scalarField deltas = mag(nf() & fvPatch::delta());
label sizeby2 = deltas.size()/2;
scalar maxMatchError = 0;
@ -100,15 +105,14 @@ void cyclicFvPatch::makeWeights(scalarField& w) const
// Make patch face - neighbour cell distances
void cyclicFvPatch::makeDeltaCoeffs(scalarField& dc) const
{
scalarField deltas = nf() & fvPatch::delta();
label sizeby2 = deltas.size()/2;
vectorField d = delta();
vectorField n = nf();
label sizeby2 = d.size()/2;
for (label facei = 0; facei < sizeby2; facei++)
{
scalar di = deltas[facei];
scalar dni = deltas[facei + sizeby2];
dc[facei] = 1.0/(di + dni);
// Stabilised form for bad meshes. HJ, 24/Aug/2011
dc[facei] = 1.0/mag(n[facei] & d[facei]), 0.05*mag(d[facei]);
dc[facei + sizeby2] = dc[facei];
}
}

20
src/finiteVolume/fvMesh/fvPatches/constraint/cyclicGgi/cyclicGgiFvPatch.C
View file

@ -54,10 +54,19 @@ void Foam::cyclicGgiFvPatch::makeWeights(scalarField& w) const
if (cyclicGgiPolyPatch_.master())
{
vectorField n = nf();
scalarField nfc =
n & (cyclicGgiPolyPatch_.reconFaceCellCentres() - Cf());
w = nfc/((n & (Cf() - Cn())) + nfc);
// Note: mag in the dot-product.
// For all valid meshes, the non-orthogonality will be less that
// 90 deg and the dot-product will be positive. For invalid
// meshes (d & s <= 0), this will stabilise the calculation
// but the result will be poor. HJ, 24/Aug/2011
scalarField nfc =
mag
(
n & (cyclicGgiPolyPatch_.reconFaceCellCentres() - Cf())
);
w = nfc/(mag(n & (Cf() - Cn())) + nfc);
if (bridgeOverlap())
{
@ -89,7 +98,10 @@ void Foam::cyclicGgiFvPatch::makeDeltaCoeffs(scalarField& dc) const
{
if (cyclicGgiPolyPatch_.master())
{
dc = 1.0/max(nf() & delta(), 0.05*mag(delta()));
// Stabilised form for bad meshes. HJ, 24/Aug/2011
vectorField d = delta();
dc = 1.0/max(nf() & d, 0.05*mag(d));
if (bridgeOverlap())
{

16
src/finiteVolume/fvMesh/fvPatches/constraint/ggi/ggiFvPatch.C
View file

@ -64,9 +64,16 @@ void Foam::ggiFvPatch::makeWeights(scalarField& w) const
if (ggiPolyPatch_.master())
{
vectorField n = nf();
scalarField nfc = n & (ggiPolyPatch_.reconFaceCellCentres() - Cf());
w = nfc/((n & (Cf() - Cn())) + nfc);
// Note: mag in the dot-product.
// For all valid meshes, the non-orthogonality will be less that
// 90 deg and the dot-product will be positive. For invalid
// meshes (d & s <= 0), this will stabilise the calculation
// but the result will be poor. HJ, 24/Aug/2011
scalarField nfc =
mag(n & (ggiPolyPatch_.reconFaceCellCentres() - Cf()));
w = nfc/(mag(n & (Cf() - Cn())) + nfc);
if (bridgeOverlap())
{
@ -100,7 +107,10 @@ void Foam::ggiFvPatch::makeDeltaCoeffs(scalarField& dc) const
{
if (ggiPolyPatch_.master())
{
dc = 1.0/max(nf() & delta(), 0.05*mag(delta()));
// Stabilised form for bad meshes. HJ, 24/Aug/2011
vectorField d = delta();
dc = 1.0/max(nf() & d, 0.05*mag(d));
if (bridgeOverlap())
{

16
src/finiteVolume/fvMesh/fvPatches/constraint/overlapGgi/overlapGgiFvPatch.C
View file

@ -51,9 +51,16 @@ void Foam::overlapGgiFvPatch::makeWeights(scalarField& w) const
if (overlapGgiPolyPatch_.master())
{
vectorField n = nf();
// Note: mag in the dot-product.
// For all valid meshes, the non-orthogonality will be less that
// 90 deg and the dot-product will be positive. For invalid
// meshes (d & s <= 0), this will stabilise the calculation
// but the result will be poor. HJ, 24/Aug/2011
scalarField nfc =
n & (overlapGgiPolyPatch_.reconFaceCellCentres() - Cf());
w = nfc/((n & (Cf() - Cn())) + nfc);
mag(n & (overlapGgiPolyPatch_.reconFaceCellCentres() - Cf()));
w = nfc/(mag(n & (Cf() - Cn())) + nfc);
}
else
{
@ -71,7 +78,10 @@ void Foam::overlapGgiFvPatch::makeDeltaCoeffs(scalarField& dc) const
{
if (overlapGgiPolyPatch_.master())
{
dc = 1.0/max(nf() & delta(), 0.05*mag(delta()));
// Stabilised form for bad meshes. HJ, 24/Aug/2011
vectorField d = delta();
dc = 1.0/max(nf() & d, 0.05*mag(d));
}
else
{

23
src/finiteVolume/fvMesh/fvPatches/constraint/processor/processorFvPatch.C
View file

@ -46,18 +46,26 @@ void processorFvPatch::makeWeights(scalarField& w) const
if (Pstream::parRun())
{
// The face normals point in the opposite direction on the other side
scalarField neighbFaceCentresCn
// Note: mag in the dot-product.
// For all valid meshes, the non-orthogonality will be less that
// 90 deg and the dot-product will be positive. For invalid
// meshes (d & s <= 0), this will stabilise the calculation
// but the result will be poor. HJ, 24/Aug/2011
scalarField neighbFaceCentresCn =
mag
(
(
procPolyPatch_.neighbFaceAreas()
/(mag(procPolyPatch_.neighbFaceAreas()) + VSMALL)
procPolyPatch_.neighbFaceAreas()/
(mag(procPolyPatch_.neighbFaceAreas()) + VSMALL)
)
& (
procPolyPatch_.neighbFaceCentres()
- procPolyPatch_.neighbFaceCellCentres())
- procPolyPatch_.neighbFaceCellCentres()
)
);
w = neighbFaceCentresCn/((nf() & fvPatch::delta())
w = neighbFaceCentresCn/(mag(nf() & fvPatch::delta())
+ neighbFaceCentresCn);
}
else
@ -71,7 +79,10 @@ void processorFvPatch::makeDeltaCoeffs(scalarField& dc) const
{
if (Pstream::parRun())
{
dc = (1.0 - weights())/(nf() & fvPatch::delta());
vectorField d = delta();
// Stabilised form for bad meshes
dc = 1.0/max((nf() & d), 0.05*mag(d));
}
else
{

16
src/finiteVolume/fvMesh/fvPatches/constraint/regionCouple/regionCoupleFvPatch.C
View file

@ -53,9 +53,16 @@ void Foam::regionCoupleFvPatch::makeWeights(scalarField& w) const
if (rcPolyPatch_.attached())
{
vectorField n = nf();
scalarField nfc = n & (rcPolyPatch_.reconFaceCellCentres() - Cf());
w = nfc/((n & (Cf() - Cn())) + nfc);
// Note: mag in the dot-product.
// For all valid meshes, the non-orthogonality will be less that
// 90 deg and the dot-product will be positive. For invalid
// meshes (d & s <= 0), this will stabilise the calculation
// but the result will be poor. HJ, 24/Aug/2011
scalarField nfc =
mag(n & (rcPolyPatch_.reconFaceCellCentres() - Cf()));
w = nfc/(mag(n & (Cf() - Cn())) + nfc);
}
else
{
@ -69,7 +76,10 @@ void Foam::regionCoupleFvPatch::makeDeltaCoeffs(scalarField& dc) const
{
if (rcPolyPatch_.attached())
{
dc = (1.0 - weights())/(nf() & fvPatch::delta());
// Stabilised form for bad meshes. HJ, 24/Aug/2011
vectorField d = delta();
dc = 1.0/max(nf() & d, 0.05*mag(d));
}
else
{