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Commit 9da83a3e authored by mattijs's avatar mattijs
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ENH: snappyHexMesh: allow cellZone erosion in parallel. See #1528. 

Issues:
- neighbouring processors use different ray since always from
owner cc to nbr cc
- growing cellZones did not correctly unmark intersections
- stand-alone baffles now always removed (if inside 'grow' region,
i.e. within 1 cell of cellZone)
parent 01c14532
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src/mesh/snappyHexMesh/meshRefinement/meshRefinement.C
View file @ 9da83a3e
......@@ -235,6 +235,27 @@ void Foam::meshRefinement::calcCellCellRays
const labelList& cellLevel = meshCutter_.cellLevel();
const pointField& cellCentres = mesh_.cellCentres();
// Mark all non-coupled or coupled+master faces. Leaves only slave of
// coupled unset.
bitSet isMaster(mesh_.nBoundaryFaces(), true);
{
const polyBoundaryMesh& patches = mesh_.boundaryMesh();
for (const polyPatch& pp : patches)
{
if (pp.coupled() && !refCast<const coupledPolyPatch>(pp).owner())
{
const labelRange bSlice
(
pp.start()-mesh_.nInternalFaces(),
pp.size()
);
isMaster.unset(bSlice);
}
}
}
start.setSize(testFaces.size());
end.setSize(testFaces.size());
minLevel.setSize(testFaces.size());
......@@ -256,8 +277,17 @@ void Foam::meshRefinement::calcCellCellRays
{
const label bFacei = facei - mesh_.nInternalFaces();
start[i] = cellCentres[own];
end[i] = neiCc[bFacei];
if (isMaster[bFacei])
{
start[i] = cellCentres[own];
end[i] = neiCc[bFacei];
}
else
{
// Slave face
start[i] = neiCc[bFacei];
end[i] = cellCentres[own];
}
minLevel[i] = min(cellLevel[own], neiLevel[bFacei]);
}
}
......
src/mesh/snappyHexMesh/meshRefinement/meshRefinement.H
View file @ 9da83a3e
......@@ -811,7 +811,8 @@ private:
(
const label nGrowCellZones,
const label backgroundZoneID,
labelList& unnamedSurfaceRegion,
labelList& unnamedSurfaceRegion1,
labelList& unnamedSurfaceRegion2,
labelList& namedSurfaceRegion,
labelList& cellToZone
) const;
......
src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C
View file @ 9da83a3e
......@@ -2184,7 +2184,8 @@ void Foam::meshRefinement::growCellZone
(
const label nGrowCellZones,
const label backgroundZoneID,
labelList& unnamedSurfaceRegion,
labelList& unnamedSurfaceRegion1,
labelList& unnamedSurfaceRegion2,
labelList& namedSurfaceRegion, // potentially zero size if no faceZones
labelList& cellToZone
) const
......@@ -2228,7 +2229,11 @@ void Foam::meshRefinement::growCellZone
//List<wallPoints> allFaceInfo(mesh_.nFaces());
//for (label facei = 0; facei < mesh_.nInternalFaces(); facei++)
//{
// if (unnamedSurfaceRegion[facei] != -1)
// if
// (
// unnamedSurfaceRegion1[facei] != -1
// || unnamedSurfaceRegion2[facei] != -1
// )
// {
// origins[0] = mesh_.faceCentres()[facei];
// distSqrs[0] = 0.0; // Initial distance
......@@ -2293,7 +2298,11 @@ void Foam::meshRefinement::growCellZone
faceDist.append(wallPoints(origins, distSqrs, surfaces));
changedFaces.append(facei);
}
else if (unnamedSurfaceRegion[facei] != -1)
else if
(
unnamedSurfaceRegion1[facei] != -1
|| unnamedSurfaceRegion2[facei] != -1
)
{
// Seed (yet unpatched) wall faces
......@@ -2328,7 +2337,7 @@ void Foam::meshRefinement::growCellZone
if (cellToZone[own] >= 0 && neiCellZone[bFacei] < 0)
{
origins[0] = mesh_.faceCentres()[facei];
distSqrs[0] = Foam::sqr(GREAT);
distSqrs[0] = 0.0;
surfaces[0] = FixedList<label, 3>
({
cellToZone[own], // zone
......@@ -2338,11 +2347,15 @@ void Foam::meshRefinement::growCellZone
faceDist.append(wallPoints(origins, distSqrs, surfaces));
changedFaces.append(facei);
}
else if (cellToZone[own] < 0 && cellToZone[own] >= 0)
else if (cellToZone[own] < 0 && neiCellZone[bFacei] >= 0)
{
// Handled on nbr processor
}
else if (unnamedSurfaceRegion[facei] != -1)
else if
(
unnamedSurfaceRegion1[facei] != -1
|| unnamedSurfaceRegion2[facei] != -1
)
{
// Seed (yet unpatched) wall faces
origins[0] = mesh_.faceCentres()[facei];
......@@ -2399,6 +2412,13 @@ void Foam::meshRefinement::growCellZone
const List<FixedList<label, 3>>& surfaces =
allCellInfo[celli].surface();
if (surfaces.size())
{
// Cell close to cellZone. Remove any free-standing baffles.
// Done by marking as changed cell. Wip.
isChangedCell.set(celli);
}
if (surfaces.size() > 1)
{
// Check if inbetween two cellZones or cellZone and wall
......@@ -2416,7 +2436,7 @@ void Foam::meshRefinement::growCellZone
}
}
if (minZone != -1)
if (minDistSqr < Foam::sqr(GREAT))
{
if (minZone != cellToZone[celli] && minZone != wallTag[0])
{
......@@ -2430,6 +2450,10 @@ void Foam::meshRefinement::growCellZone
// Make sure to unset faces of changed cell
syncTools::swapBoundaryCellList(mesh_, cellToZone, neiCellZone);
label nUnnamed = 0;
label nNamed = 0;
for (const label celli : isChangedCell)
......@@ -2453,9 +2477,14 @@ void Foam::meshRefinement::growCellZone
if (nbrZone == cellToZone[celli])
{
if (unnamedSurfaceRegion[facei] != -1)
if
(
unnamedSurfaceRegion1[facei] != -1
|| unnamedSurfaceRegion2[facei] != -1
)
{
unnamedSurfaceRegion[facei] = -1;
unnamedSurfaceRegion1[facei] = -1;
unnamedSurfaceRegion2[facei] = -1;
nUnnamed++;
}
if
......@@ -2471,17 +2500,40 @@ void Foam::meshRefinement::growCellZone
}
}
reduce(nUnnamed, sumOp<label>());
reduce(nNamed, sumOp<label>());
// Do always; might bypass if nNamed,nUnnamed zero
syncTools::syncFaceList
(
mesh_,
unnamedSurfaceRegion1,
maxEqOp<label>()
);
syncTools::syncFaceList
(
mesh_,
unnamedSurfaceRegion2,
maxEqOp<label>()
);
if (namedSurfaceRegion.size())
{
syncTools::syncFaceList
(
mesh_,
namedSurfaceRegion,
maxEqOp<label>()
);
}
if (debug)
{
Pout<< "growCellZone : grown cellZones by "
<< returnReduce(isChangedCell.count(), sumOp<label>())
<< " cells (moved from background to nearest cellZone)"
<< endl;
Pout<< "growCellZone : unmarked "
<< returnReduce(nUnnamed, sumOp<label>())
<< " unzoned intersections; "
<< returnReduce(nNamed, sumOp<label>())
<< " zoned intersections; "
Pout<< "growCellZone : unmarked " << nUnnamed
<< " unzoned intersections; " << nNamed << " zoned intersections; "
<< endl;
}
}
......@@ -2964,6 +3016,7 @@ void Foam::meshRefinement::zonify
-nErodeCellZones,
backgroundZoneID,
unnamedRegion1,
unnamedRegion2,
namedSurfaceRegion,
cellToZone
);
......@@ -3030,6 +3083,7 @@ void Foam::meshRefinement::zonify
-nErodeCellZones,
backgroundZoneID,
unnamedRegion1,
unnamedRegion2,
namedSurfaceRegion, // note: potentially zero sized
cellToZone
);
......@@ -3138,6 +3192,103 @@ void Foam::meshRefinement::zonify
volCellToZone[cellI] = cellToZone[cellI];
}
volCellToZone.write();
//mkDir(mesh_.time().path()/timeName());
//OBJstream str
//(
// mesh_.time().path()/timeName()/"zoneBoundaryFaces.obj"
//);
//Pout<< "Writing zone boundaries to " << str.name() << endl;
//for (label facei = 0; facei < mesh_.nInternalFaces(); facei++)
//{
// const label ownZone = cellToZone[mesh_.faceOwner()[facei]];
// const label neiZone = cellToZone[mesh_.faceNeighbour()[facei]];
// if (ownZone != neiZone)
// {
// str.write(mesh_.faces()[facei], mesh_.points(), false);
// }
//}
//labelList neiCellZone;
//syncTools::swapBoundaryCellList(mesh_, cellToZone, neiCellZone);
//for
//(
// label facei = mesh_.nInternalFaces();
// facei < mesh_.nFaces();
// facei++
//)
//{
// const label ownZone = cellToZone[mesh_.faceOwner()[facei]];
// const label bFacei = facei-mesh_.nInternalFaces();
// const label neiZone = neiCellZone[bFacei];
// if (ownZone != neiZone)
// {
// str.write(mesh_.faces()[facei], mesh_.points(), false);
// }
//}
//mkDir(mesh_.time().path()/timeName());
//OBJstream str1
//(
// mesh_.time().path()/timeName()/"unnamedRegion1.obj"
//);
//OBJstream str2
//(
// mesh_.time().path()/timeName()/"unnamedRegion2.obj"
//);
//Pout<< "Writing unnamed1 to " << str1.name() << endl;
//Pout<< "Writing unnamed2 to " << str2.name() << endl;
//for (label facei = 0; facei < mesh_.nFaces(); facei++)
//{
// if
// (
// unnamedRegion1[facei] < -1
// || unnamedRegion2[facei] < -1
// )
// {
// FatalErrorInFunction << "face:"
// << mesh_.faceCentres()[facei]
// << " unnamed1:" << unnamedRegion1[facei]
// << " unnamed2:" << unnamedRegion2[facei]
// << exit(FatalError);
// }
//
// if (unnamedRegion1[facei] >= 0)
// {
// str1.write(mesh_.faces()[facei], mesh_.points(), false);
// }
//
// if (unnamedRegion2[facei] >= 0)
// {
// str2.write(mesh_.faces()[facei], mesh_.points(), false);
// }
//}
//if (namedSurfaceRegion.size())
//{
// OBJstream strNamed
// (
// mesh_.time().path()/timeName()/"namedSurfaceRegion.obj"
// );
// Pout<< "Writing named to " << strNamed.name() << endl;
// for (label facei = 0; facei < mesh_.nFaces(); facei++)
// {
// const face& f = mesh_.faces()[facei];
// if (namedSurfaceRegion[facei] < -1)
// {
// FatalErrorInFunction << "face:"
// << mesh_.faceCentres()[facei]
// << " unnamed1:" << unnamedRegion1[facei]
// << " unnamed2:" << unnamedRegion2[facei]
// << " named:" << namedSurfaceRegion[facei]
// << exit(FatalError);
// }
// if (namedSurfaceRegion[facei] >= 0)
// {
// strNamed.write(f, mesh_.points(), false);
// }
// }
//}
}
}
......
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