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2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 | /*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2026 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 "meshRefinement.H"
#include "trackedParticle.H"
#include "syncTools.H"
#include "Time.H"
#include "refinementSurfaces.H"
#include "refinementFeatures.H"
#include "refinementRegions.H"
#include "faceSet.H"
#include "decompositionMethod.H"
#include "fvMeshDistribute.H"
#include "polyTopoChange.H"
#include "polyDistributionMap.H"
#include "Cloud.H"
#include "OBJstream.H"
#include "cellSet.H"
#include "meshSearch.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
//- To compare normals
static bool less(const vector& x, const vector& y)
{
for (direction i = 0; i < vector::nComponents; i++)
{
if (x[i] < y[i])
{
return true;
}
else if (x[i] > y[i])
{
return false;
}
}
// All components the same
return false;
}
//- To compare normals
class normalLess
{
const vectorList& values_;
public:
normalLess(const vectorList& values)
:
values_(values)
{}
bool operator()(const label a, const label b) const
{
return less(values_[a], values_[b]);
}
};
//- Template specialisation for pTraits<labelList> so we can have fields
template<>
class pTraits<labelList>
{
public:
//- Component type
typedef labelList cmptType;
};
//- Template specialisation for pTraits<labelList> so we can have fields
template<>
class pTraits<vectorList>
{
public:
//- Component type
typedef vectorList cmptType;
};
}
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
// Get faces (on the new mesh) that have in some way been affected by the
// mesh change. Picks up all faces but those that are between two
// unrefined faces. (Note that of an unchanged face the edge still might be
// split but that does not change any face centre or cell centre.
Foam::labelList Foam::meshRefinement::getChangedFaces
(
const polyTopoChangeMap& map,
const labelList& oldCellsToRefine
)
{
const polyMesh& mesh = map.mesh();
labelList changedFaces;
// For reporting: number of masterFaces changed
label nMasterChanged = 0;
PackedBoolList isMasterFace(syncTools::getMasterFaces(mesh));
{
// Mark any face on a cell which has been added or changed
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Note that refining a face changes the face centre (for a warped face)
// which changes the cell centre. This again changes the cellcentre-
// cellcentre edge across all faces of the cell.
// Note: this does not happen for unwarped faces but unfortunately
// we don't have this information.
const labelList& faceOwner = mesh.faceOwner();
const labelList& faceNeighbour = mesh.faceNeighbour();
const cellList& cells = mesh.cells();
const label nInternalFaces = mesh.nInternalFaces();
// Mark refined cells on old mesh
PackedBoolList oldRefineCell(map.nOldCells());
forAll(oldCellsToRefine, i)
{
oldRefineCell.set(oldCellsToRefine[i], 1u);
}
// Mark refined faces
PackedBoolList refinedInternalFace(nInternalFaces);
// 1. Internal faces
for (label facei = 0; facei < nInternalFaces; facei++)
{
const label oldOwn = map.cellMap()[faceOwner[facei]];
const label oldNei = map.cellMap()[faceNeighbour[facei]];
if
(
oldOwn >= 0
&& oldRefineCell.get(oldOwn) == 0u
&& oldNei >= 0
&& oldRefineCell.get(oldNei) == 0u
)
{
// Unaffected face since both neighbours were not refined.
}
else
{
refinedInternalFace.set(facei, 1u);
}
}
// 2. Boundary faces
boolList refinedBoundaryFace(mesh.nFaces()-nInternalFaces, false);
forAll(mesh.boundary(), patchi)
{
const polyPatch& pp = mesh.boundary()[patchi];
label facei = pp.start();
forAll(pp, i)
{
label oldOwn = map.cellMap()[faceOwner[facei]];
if (oldOwn >= 0 && oldRefineCell.get(oldOwn) == 0u)
{
// owner did exist and wasn't refined.
}
else
{
refinedBoundaryFace[facei - nInternalFaces] = true;
}
facei++;
}
}
// Synchronise refined face status
syncTools::syncBoundaryFaceList
(
mesh,
refinedBoundaryFace,
orEqOp()
);
// 3. Mark all faces affected by refinement. Refined faces are in
// - refinedInternalFace
// - refinedBoundaryFace
boolList changedFace(mesh.nFaces(), false);
forAll(refinedInternalFace, facei)
{
if (refinedInternalFace.get(facei) == 1u)
{
const cell& ownFaces = cells[faceOwner[facei]];
forAll(ownFaces, owni)
{
changedFace[ownFaces[owni]] = true;
}
const cell& neiFaces = cells[faceNeighbour[facei]];
forAll(neiFaces, neii)
{
changedFace[neiFaces[neii]] = true;
}
}
}
forAll(refinedBoundaryFace, i)
{
if (refinedBoundaryFace[i])
{
const cell& ownFaces = cells[faceOwner[i+nInternalFaces]];
forAll(ownFaces, owni)
{
changedFace[ownFaces[owni]] = true;
}
}
}
syncTools::syncFaceList
(
mesh,
changedFace,
orEqOp()
);
// Now we have in changedFace marked all affected faces. Pack.
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
changedFaces = findIndices(changedFace, true);
// Count changed master faces.
nMasterChanged = 0;
forAll(changedFace, facei)
{
if (changedFace[facei] && isMasterFace[facei])
{
nMasterChanged++;
}
}
}
if (debug&meshRefinement::MESH)
{
Pout<< "getChangedFaces : Detected "
<< " local:" << changedFaces.size()
<< " global:" << returnReduce(nMasterChanged, sumOp())
<< " changed faces out of " << mesh.globalData().nTotalFaces()
<< endl;
faceSet changedFacesSet(mesh, "changedFaces", changedFaces);
Pout<< "getChangedFaces : Writing " << changedFaces.size()
<< " changed faces to faceSet " << changedFacesSet.name()
<< endl;
changedFacesSet.write();
}
return changedFaces;
}
// Mark cell for refinement (if not already marked). Return false if
// refinelimit hit. Keeps running count (in nRefine) of cells marked for
// refinement
bool Foam::meshRefinement::markForRefine
(
const label markValue,
const label nAllowRefine,
label& cellValue,
label& nRefine
)
{
if (cellValue == -1)
{
cellValue = markValue;
nRefine++;
}
return nRefine <= nAllowRefine;
}
void Foam::meshRefinement::markFeatureCellLevel
(
const List<point>& insidePoints,
labelList& maxFeatureLevel
) const
{
// We want to refine all cells containing a feature edge.
// - don't want to search over whole mesh
// - don't want to build octree for whole mesh
// - so use tracking to follow the feature edges
//
// 1. find non-manifold points on feature edges (i.e. start of feature edge
// or 'knot')
// 2. seed particle starting at insidePoint going to this non-manifold
// point
// 3. track particles to their non-manifold point
//
// 4. track particles across their connected feature edges, marking all
// visited cells with their level (through trackingData)
// 5. do 4 until all edges have been visited.
// Find all start cells of features.
// Is done by tracking from insidePoint.
lagrangian::Cloud<trackedParticle> startPointCloud
(
mesh_,
"startPointCloud",
IDLList<trackedParticle>()
);
// Features are identical on all processors. Number them so we know
// what to seed. Do this on only the processor that
// holds the insidePoint.
label nLocateBoundaryHits = 0;
const meshSearch& searchEngine = meshSearch::New(mesh());
forAll(insidePoints, i)
{
const point& insidePoint = insidePoints[i];
const label celli = searchEngine.findCell(insidePoint);
if (celli != -1)
{
// I am the processor that holds the insidePoint
forAll(features_, feati)
{
const edgeMesh& featureMesh = features_[feati];
const label featureLevel = features_.levels()[feati][0];
const labelListList& pointEdges = featureMesh.pointEdges();
// Find regions on edgeMesh
labelList edgeRegion;
const label nRegions = featureMesh.regions(edgeRegion);
PackedBoolList regionVisited(nRegions);
// 1. Seed all 'knots' in edgeMesh
forAll(pointEdges, pointi)
{
if (pointEdges[pointi].size() != 2)
{
if (debug&meshRefinement::FEATURESEEDS)
{
Pout<< "Adding particle from point:" << pointi
<< " coord:" << featureMesh.points()[pointi]
<< " since number of emanating edges:"
<< pointEdges[pointi].size()
<< endl;
}
// Non-manifold point. Create particle.
startPointCloud.addParticle
(
new trackedParticle
(
searchEngine,
insidePoint,
celli,
nLocateBoundaryHits,
featureMesh.points()[pointi], // endpos
featureLevel, // level
feati, // featureMesh
pointi, // end point
-1 // feature edge
)
);
// Mark
if (pointEdges[pointi].size() > 0)
{
label e0 = pointEdges[pointi][0];
label regioni = edgeRegion[e0];
regionVisited[regioni] = 1u;
}
}
}
// 2. Any regions that have not been visited at all? These can
// only be circular regions!
forAll(featureMesh.edges(), edgei)
{
if (regionVisited.set(edgeRegion[edgei], 1u))
{
const edge& e = featureMesh.edges()[edgei];
const label pointi = e.start();
if (debug&meshRefinement::FEATURESEEDS)
{
Pout<< "Adding particle from point:" << pointi
<< " coord:" << featureMesh.points()[pointi]
<< " on circular region:" << edgeRegion[edgei]
<< endl;
}
// Non-manifold point. Create particle.
startPointCloud.addParticle
(
new trackedParticle
(
searchEngine,
insidePoint,
celli,
nLocateBoundaryHits,
featureMesh.points()[pointi], // endpos
featureLevel, // level
feati, // featureMesh
pointi, // end point
-1 // feature edge
)
);
}
}
}
}
}
// Largest refinement level of any feature passed through
maxFeatureLevel = labelList(mesh_.nCells(), -1);
// Whether edge has been visited.
List<PackedBoolList> featureEdgeVisited(features_.size());
forAll(features_, feati)
{
featureEdgeVisited[feati].setSize(features_[feati].edges().size());
featureEdgeVisited[feati] = 0u;
}
// Database to pass into trackedParticle::move
trackedParticle::trackingData td
(
startPointCloud,
2.0*mesh_.bounds().mag(),
maxFeatureLevel,
featureEdgeVisited
);
// Track all particles to their end position (= starting feature point)
// Note that the particle might have started on a different processor
// so this will transfer across nicely until we can start tracking proper.
if (debug&meshRefinement::FEATURESEEDS)
{
Pout<< "Tracking " << startPointCloud.size()
<< " particles over distance " << td.maxTrackLen_
<< " to find the starting cell" << endl;
}
startPointCloud.move(startPointCloud, td);
// Reset levels
maxFeatureLevel = -1;
forAll(features_, feati)
{
featureEdgeVisited[feati] = 0u;
}
lagrangian::Cloud<trackedParticle> cloud
(
mesh_,
"featureCloud",
IDLList<trackedParticle>()
);
if (debug&meshRefinement::FEATURESEEDS)
{
Pout<< "Constructing cloud for cell marking" << endl;
}
forAllIter(lagrangian::Cloud<trackedParticle>, startPointCloud, iter)
{
const trackedParticle& startTp = iter();
const label feati = startTp.i();
const label pointi = startTp.j();
const edgeMesh& featureMesh = features_[feati];
const labelList& pEdges = featureMesh.pointEdges()[pointi];
// Now shoot particles down all pEdges.
forAll(pEdges, pEdgei)
{
const label edgei = pEdges[pEdgei];
if (featureEdgeVisited[feati].set(edgei, 1u))
{
// Unvisited edge. Make the particle go to the other point
// on the edge.
const edge& e = featureMesh.edges()[edgei];
label otherPointi = e.otherVertex(pointi);
trackedParticle* tp(new trackedParticle(startTp));
tp->start() = tp->position(mesh_);
tp->end() = featureMesh.points()[otherPointi];
tp->fraction() = 1;
tp->j() = otherPointi;
tp->k() = edgei;
if (debug&meshRefinement::FEATURESEEDS)
{
Pout<< "Adding particle for point:" << pointi
<< " coord:" << tp->position(mesh_)
<< " feature:" << feati
<< " to track to:" << tp->end()
<< endl;
}
cloud.addParticle(tp);
}
}
}
startPointCloud.clear();
while (true)
{
// Track all particles to their end position.
if (debug&meshRefinement::FEATURESEEDS)
{
Pout<< "Tracking " << cloud.size()
<< " particles over distance " << td.maxTrackLen_
<< " to mark cells" << endl;
}
cloud.move(cloud, td);
// Make particle follow edge.
forAllIter(lagrangian::Cloud<trackedParticle>, cloud, iter)
{
trackedParticle& tp = iter();
const label feati = tp.i();
const label pointi = tp.j();
const edgeMesh& featureMesh = features_[feati];
const labelList& pEdges = featureMesh.pointEdges()[pointi];
// Particle now at pointi. Check connected edges to see which one
// we have to visit now.
bool keepParticle = false;
forAll(pEdges, i)
{
const label edgei = pEdges[i];
if (featureEdgeVisited[feati].set(edgei, 1u))
{
// Unvisited edge. Make the particle go to the other point
// on the edge.
const edge& e = featureMesh.edges()[edgei];
const label otherPointi = e.otherVertex(pointi);
tp.start() = tp.position(mesh_);
tp.end() = featureMesh.points()[otherPointi];
tp.fraction() = 1;
tp.j() = otherPointi;
tp.k() = edgei;
keepParticle = true;
break;
}
}
if (!keepParticle)
{
// Particle at 'knot' where another particle already has been
// seeded. Delete particle.
cloud.deleteParticle(tp);
}
}
if (debug&meshRefinement::FEATURESEEDS)
{
Pout<< "Remaining particles " << cloud.size() << endl;
}
if (returnReduce(cloud.size(), sumOp()) == 0)
{
break;
}
}
// if (debug&meshRefinement::FEATURESEEDS)
//{
// forAll(maxFeatureLevel, celli)
// {
// if (maxFeatureLevel[celli] != -1)
// {
// Pout<< "Feature went through cell:" << celli
// << " coord:" << mesh_.cellCentres()[celli]
// << " level:" << maxFeatureLevel[celli]
// << endl;
// }
// }
//}
}
// Calculates list of cells to refine based on intersection with feature edge.
Foam::label Foam::meshRefinement::markFeatureRefinement
(
const List<point>& insidePoints,
const label nAllowRefine,
labelList& refineCell,
label& nRefine
) const
{
// Largest refinement level of any feature passed through
labelList maxFeatureLevel;
markFeatureCellLevel(insidePoints, maxFeatureLevel);
// See which cells to refine. maxFeatureLevel will hold highest level
// of any feature edge that passed through.
const labelList& cellLevel = meshCutter_.cellLevel();
const label oldNRefine = nRefine;
forAll(maxFeatureLevel, celli)
{
if (maxFeatureLevel[celli] > cellLevel[celli])
{
// Mark
if
(
!markForRefine
(
0, // surface (n/a)
nAllowRefine,
refineCell[celli],
nRefine
)
)
{
// Reached limit
break;
}
}
}
if
(
returnReduce(nRefine, sumOp())
> returnReduce(nAllowRefine, sumOp())
)
{
Info<< "Reached refinement limit." << endl;
}
return returnReduce(nRefine-oldNRefine, sumOp());
}
// Mark cells for distance-to-feature based refinement.
Foam::label Foam::meshRefinement::markInternalDistanceToFeatureRefinement
(
const label nAllowRefine,
labelList& refineCell,
label& nRefine
) const
{
const labelList& cellLevel = meshCutter_.cellLevel();
const pointField& cellCentres = mesh_.cellCentres();
// Detect if there are any distance features
if (features_.maxDistance() <= 0.0)
{
return 0;
}
label oldNRefine = nRefine;
// Collect cells to test
pointField testCc(cellLevel.size()-nRefine);
labelList testLevels(cellLevel.size()-nRefine);
label testi = 0;
forAll(cellLevel, celli)
{
if (refineCell[celli] == -1)
{
testCc[testi] = cellCentres[celli];
testLevels[testi] = cellLevel[celli];
testi++;
}
}
// Do test to see whether cells are in/near features with higher level
labelList maxLevel;
features_.findHigherLevel(testCc, testLevels, maxLevel);
// Mark for refinement. Note that we didn't store the original cellID so
// now just reloop in same order.
testi = 0;
forAll(cellLevel, celli)
{
if (refineCell[celli] == -1)
{
if (maxLevel[testi] > testLevels[testi])
{
const bool reachedLimit = !markForRefine
(
maxLevel[testi], // mark with any positive value
nAllowRefine,
refineCell[celli],
nRefine
);
if (reachedLimit)
{
if (debug)
{
Pout<< "Stopped refining internal cells"
<< " since reaching my cell limit of "
<< mesh_.nCells()+7*nRefine << endl;
}
break;
}
}
testi++;
}
}
if
(
returnReduce(nRefine, sumOp())
> returnReduce(nAllowRefine, sumOp())
)
{
Info<< "Reached refinement limit." << endl;
}
return returnReduce(nRefine-oldNRefine, sumOp());
}
Foam::label Foam::meshRefinement::markInternalRefinement
(
const label nAllowRefine,
labelList& refineCell,
label& nRefine
) const
{
const labelList& cellLevel = meshCutter_.cellLevel();
const pointField& cellCentres = mesh_.cellCentres();
const label oldNRefine = nRefine;
// Collect cells to test
pointField testCc(cellLevel.size()-nRefine);
labelList testLevels(cellLevel.size()-nRefine);
label testi = 0;
forAll(cellLevel, celli)
{
if (refineCell[celli] == -1)
{
testCc[testi] = cellCentres[celli];
testLevels[testi] = cellLevel[celli];
testi++;
}
}
// Do test to see whether cells is inside/outside shell with higher level
labelList maxLevel;
shells_.findHigherLevel
(
testCc,
testLevels,
meshCutter_.level0EdgeLength(),
maxLevel
);
// Mark for refinement. Note that we didn't store the original cellID so
// now just reloop in same order.
testi = 0;
forAll(cellLevel, celli)
{
if (refineCell[celli] == -1)
{
if (maxLevel[testi] > testLevels[testi])
{
bool reachedLimit = !markForRefine
(
maxLevel[testi], // mark with any positive value
nAllowRefine,
refineCell[celli],
nRefine
);
if (reachedLimit)
{
if (debug)
{
Pout<< "Stopped refining internal cells"
<< " since reaching my cell limit of "
<< mesh_.nCells()+7*nRefine << endl;
}
break;
}
}
testi++;
}
}
if
(
returnReduce(nRefine, sumOp())
> returnReduce(nAllowRefine, sumOp())
)
{
Info<< "Reached refinement limit." << endl;
}
return returnReduce(nRefine-oldNRefine, sumOp());
}
Foam::labelList Foam::meshRefinement::getRefineCandidateFaces
(
const labelList& refineCell
) const
{
labelList testFaces(mesh_.nFaces());
label nTest = 0;
forAll(surfaceIndex_, facei)
{
if (surfaceIndex_[facei] != -1)
{
label own = mesh_.faceOwner()[facei];
if (mesh_.isInternalFace(facei))
{
const label nei = mesh_.faceNeighbour()[facei];
if (refineCell[own] == -1 || refineCell[nei] == -1)
{
testFaces[nTest++] = facei;
}
}
else
{
if (refineCell[own] == -1)
{
testFaces[nTest++] = facei;
}
}
}
}
testFaces.setSize(nTest);
return testFaces;
}
Foam::label Foam::meshRefinement::markSurfaceRefinement
(
const label nAllowRefine,
const labelList& neiLevel,
const pointField& neiCc,
labelList& refineCell,
label& nRefine
) const
{
const labelList& cellLevel = meshCutter_.cellLevel();
const pointField& cellCentres = mesh_.cellCentres();
const label oldNRefine = nRefine;
// Use cached surfaceIndex_ to detect if any intersection. If so
// re-intersect to determine level wanted.
// Collect candidate faces
// ~~~~~~~~~~~~~~~~~~~~~~~
labelList testFaces(getRefineCandidateFaces(refineCell));
// Collect segments
// ~~~~~~~~~~~~~~~~
pointField start(testFaces.size());
pointField end(testFaces.size());
labelList minLevel(testFaces.size());
forAll(testFaces, i)
{
const label facei = testFaces[i];
const label own = mesh_.faceOwner()[facei];
if (mesh_.isInternalFace(facei))
{
label nei = mesh_.faceNeighbour()[facei];
start[i] = cellCentres[own];
end[i] = cellCentres[nei];
minLevel[i] = min(cellLevel[own], cellLevel[nei]);
}
else
{
const label bFacei = facei - mesh_.nInternalFaces();
start[i] = cellCentres[own];
end[i] = neiCc[bFacei];
minLevel[i] = min(cellLevel[own], neiLevel[bFacei]);
}
}
// Extend segments a bit
{
const vectorField smallVec(rootSmall*(end-start));
start -= smallVec;
end += smallVec;
}
// Do test for higher intersections
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
labelList surfaceHit;
labelList surfaceMinLevel;
surfaces_.findHigherIntersection
(
start,
end,
minLevel,
surfaceHit,
surfaceMinLevel
);
// Mark cells for refinement
// ~~~~~~~~~~~~~~~~~~~~~~~~~
forAll(testFaces, i)
{
const label facei = testFaces[i];
const label surfi = surfaceHit[i];
if (surfi != -1)
{
// Found intersection with surface with higher wanted
// refinement. Check if the level field on that surface
// specifies an even higher level. Note:this is weird. Should
// do the check with the surfaceMinLevel whilst intersecting the
// surfaces?
const label own = mesh_.faceOwner()[facei];
if (surfaceMinLevel[i] > cellLevel[own])
{
// Owner needs refining
if
(
!markForRefine
(
surfi,
nAllowRefine,
refineCell[own],
nRefine
)
)
{
break;
}
}
if (mesh_.isInternalFace(facei))
{
const label nei = mesh_.faceNeighbour()[facei];
if (surfaceMinLevel[i] > cellLevel[nei])
{
// Neighbour needs refining
if
(
!markForRefine
(
surfi,
nAllowRefine,
refineCell[nei],
nRefine
)
)
{
break;
}
}
}
}
}
if
(
returnReduce(nRefine, sumOp())
> returnReduce(nAllowRefine, sumOp())
)
{
Info<< "Reached refinement limit." << endl;
}
return returnReduce(nRefine-oldNRefine, sumOp());
}
// Count number of matches of first argument in second argument
Foam::label Foam::meshRefinement::countMatches
(
const List<point>& normals1,
const List<point>& normals2,
const scalar tol
) const
{
label nMatches = 0;
forAll(normals1, i)
{
const vector& n1 = normals1[i];
forAll(normals2, j)
{
const vector& n2 = normals2[j];
if (magSqr(n1-n2) < tol)
{
nMatches++;
break;
}
}
}
return nMatches;
}
// Mark cells for surface curvature based refinement.
Foam::label Foam::meshRefinement::markSurfaceCurvatureRefinement
(
const scalar curvature,
const label nAllowRefine,
const labelList& neiLevel,
const pointField& neiCc,
labelList& refineCell,
label& nRefine
) const
{
const labelList& cellLevel = meshCutter_.cellLevel();
const pointField& cellCentres = mesh_.cellCentres();
const label oldNRefine = nRefine;
// 1. local test: any cell on more than one surface gets refined
// (if its current level is < max of the surface max level)
// 2. 'global' test: any cell on only one surface with a neighbour
// on a different surface gets refined (if its current level etc.)
const PackedBoolList isMasterFace(syncTools::getMasterFaces(mesh_));
// Collect candidate faces (i.e. intersecting any surface and
// owner/neighbour not yet refined.
labelList testFaces(getRefineCandidateFaces(refineCell));
// Collect segments
pointField start(testFaces.size());
pointField end(testFaces.size());
labelList minLevel(testFaces.size());
forAll(testFaces, i)
{
const label facei = testFaces[i];
const label own = mesh_.faceOwner()[facei];
if (mesh_.isInternalFace(facei))
{
const label nei = mesh_.faceNeighbour()[facei];
start[i] = cellCentres[own];
end[i] = cellCentres[nei];
minLevel[i] = min(cellLevel[own], cellLevel[nei]);
}
else
{
const label bFacei = facei - mesh_.nInternalFaces();
start[i] = cellCentres[own];
end[i] = neiCc[bFacei];
if (!isMasterFace[facei])
{
Swap(start[i], end[i]);
}
minLevel[i] = min(cellLevel[own], neiLevel[bFacei]);
}
}
// Extend segments a bit
{
const vectorField smallVec(rootSmall*(end-start));
start -= smallVec;
end += smallVec;
}
// Test for all intersections (with surfaces of higher max level than
// minLevel) and cache per cell the interesting inter
labelListList cellSurfLevels(mesh_.nCells());
List<vectorList> cellSurfNormals(mesh_.nCells());
{
// Per segment the normals of the surfaces
List<vectorList> surfaceNormal;
// Per segment the list of levels of the surfaces
labelListList surfaceLevel;
surfaces_.findAllHigherIntersections
(
start,
end,
minLevel, // max level of surface has to be bigger
// than min level of neighbouring cells
surfaces_.maxLevel(),
surfaceNormal,
surfaceLevel
);
// Sort the data according to surface location. This will guarantee
// that on coupled faces both sides visit the intersections in
// the same order so will decide the same
labelList visitOrder;
forAll(surfaceNormal, pointi)
{
vectorList& pNormals = surfaceNormal[pointi];
labelList& pLevel = surfaceLevel[pointi];
sortedOrder(pNormals, visitOrder, normalLess(pNormals));
pNormals = List<point>(pNormals, visitOrder);
pLevel = UIndirectList<label>(pLevel, visitOrder);
}
// Clear out unnecessary data
start.clear();
end.clear();
minLevel.clear();
// Convert face-wise data to cell.
forAll(testFaces, i)
{
const label facei = testFaces[i];
const label own = mesh_.faceOwner()[facei];
const vectorList& fNormals = surfaceNormal[i];
const labelList& fLevels = surfaceLevel[i];
forAll(fNormals, hiti)
{
if (fLevels[hiti] > cellLevel[own])
{
cellSurfLevels[own].append(fLevels[hiti]);
cellSurfNormals[own].append(fNormals[hiti]);
}
if (mesh_.isInternalFace(facei))
{
label nei = mesh_.faceNeighbour()[facei];
if (fLevels[hiti] > cellLevel[nei])
{
cellSurfLevels[nei].append(fLevels[hiti]);
cellSurfNormals[nei].append(fNormals[hiti]);
}
}
}
}
}
// Bit of statistics
if (debug)
{
label nSet = 0;
label nNormals = 9;
forAll(cellSurfNormals, celli)
{
const vectorList& normals = cellSurfNormals[celli];
if (normals.size())
{
nSet++;
nNormals += normals.size();
}
}
reduce(nSet, sumOp());
reduce(nNormals, sumOp());
Info<< "markSurfaceCurvatureRefinement :"
<< " cells:" << mesh_.globalData().nTotalCells()
<< " of which with normals:" << nSet
<< " ; total normals stored:" << nNormals
<< endl;
}
bool reachedLimit = false;
// 1. Check normals per cell
// ~~~~~~~~~~~~~~~~~~~~~~~~~
for
(
label celli = 0;
!reachedLimit && celli < cellSurfNormals.size();
celli++
)
{
const vectorList& normals = cellSurfNormals[celli];
const labelList& levels = cellSurfLevels[celli];
// n^2 comparison of all normals in a cell
for (label i = 0; !reachedLimit && i < normals.size(); i++)
{
for (label j = i+1; !reachedLimit && j < normals.size(); j++)
{
if ((normals[i] & normals[j]) < curvature)
{
const label maxLevel = max(levels[i], levels[j]);
if (cellLevel[celli] < maxLevel)
{
if
(
!markForRefine
(
maxLevel,
nAllowRefine,
refineCell[celli],
nRefine
)
)
{
if (debug)
{
Pout<< "Stopped refining since reaching my cell"
<< " limit of " << mesh_.nCells()+7*nRefine
<< endl;
}
reachedLimit = true;
break;
}
}
}
}
}
}
// 2. Find out a measure of surface curvature
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Look at normals between neighbouring surfaces
// Loop over all faces. Could only be checkFaces, except if they're coupled
// Internal faces
for
(
label facei = 0;
!reachedLimit && facei < mesh_.nInternalFaces();
facei++
)
{
const label own = mesh_.faceOwner()[facei];
const label nei = mesh_.faceNeighbour()[facei];
const vectorList& ownNormals = cellSurfNormals[own];
const labelList& ownLevels = cellSurfLevels[own];
const vectorList& neiNormals = cellSurfNormals[nei];
const labelList& neiLevels = cellSurfLevels[nei];
// Special case: owner normals set is a subset of the neighbour
// normals. Do not do curvature refinement since other cell's normals
// do not add any information. Avoids weird corner extensions of
// refinement regions.
bool ownisSubset =
countMatches(ownNormals, neiNormals)
== ownNormals.size();
bool neiisSubset =
countMatches(neiNormals, ownNormals)
== neiNormals.size();
if (!ownisSubset && !neiisSubset)
{
// n^2 comparison of between ownNormals and neiNormals
for (label i = 0; !reachedLimit && i < ownNormals.size(); i++)
{
for (label j = 0; !reachedLimit && j < neiNormals.size(); j++)
{
// Have valid data on both sides. Check curvature.
if ((ownNormals[i] & neiNormals[j]) < curvature)
{
// See which side to refine.
if (cellLevel[own] < ownLevels[i])
{
if
(
!markForRefine
(
ownLevels[i],
nAllowRefine,
refineCell[own],
nRefine
)
)
{
if (debug)
{
Pout<< "Stopped refining since reaching"
<< " my cell limit of "
<< mesh_.nCells()+7*nRefine << endl;
}
reachedLimit = true;
break;
}
}
if (cellLevel[nei] < neiLevels[j])
{
if
(
!markForRefine
(
neiLevels[j],
nAllowRefine,
refineCell[nei],
nRefine
)
)
{
if (debug)
{
Pout<< "Stopped refining since reaching"
<< " my cell limit of "
<< mesh_.nCells()+7*nRefine << endl;
}
reachedLimit = true;
break;
}
}
}
}
}
}
}
// Send over surface normal to neighbour cell.
List<vectorList> neiSurfaceNormals;
syncTools::swapBoundaryCellList(mesh_, cellSurfNormals, neiSurfaceNormals);
// Boundary faces
for
(
label facei = mesh_.nInternalFaces();
!reachedLimit && facei < mesh_.nFaces();
facei++
)
{
label own = mesh_.faceOwner()[facei];
label bFacei = facei - mesh_.nInternalFaces();
const vectorList& ownNormals = cellSurfNormals[own];
const labelList& ownLevels = cellSurfLevels[own];
const vectorList& neiNormals = neiSurfaceNormals[bFacei];
// Special case: owner normals set is a subset of the neighbour
// normals. Do not do curvature refinement since other cell's normals
// do not add any information. Avoids weird corner extensions of
// refinement regions.
bool ownisSubset =
countMatches(ownNormals, neiNormals)
== ownNormals.size();
bool neiisSubset =
countMatches(neiNormals, ownNormals)
== neiNormals.size();
if (!ownisSubset && !neiisSubset)
{
// n^2 comparison of between ownNormals and neiNormals
for (label i = 0; !reachedLimit && i < ownNormals.size(); i++)
{
for (label j = 0; !reachedLimit && j < neiNormals.size(); j++)
{
// Have valid data on both sides. Check curvature.
if ((ownNormals[i] & neiNormals[j]) < curvature)
{
if (cellLevel[own] < ownLevels[i])
{
if
(
!markForRefine
(
ownLevels[i],
nAllowRefine,
refineCell[own],
nRefine
)
)
{
if (debug)
{
Pout<< "Stopped refining since reaching"
<< " my cell limit of "
<< mesh_.nCells()+7*nRefine
<< endl;
}
reachedLimit = true;
break;
}
}
}
}
}
}
}
if
(
returnReduce(nRefine, sumOp())
> returnReduce(nAllowRefine, sumOp())
)
{
Info<< "Reached refinement limit." << endl;
}
return returnReduce(nRefine-oldNRefine, sumOp());
}
bool Foam::meshRefinement::isGap
(
const scalar planarCos,
const vector& point0,
const vector& normal0,
const vector& point1,
const vector& normal1
) const
{
//- Hits differ and angles are oppositeish and
// hits have a normal distance
const vector d = point1 - point0;
const scalar magD = mag(d);
if (magD > mergeDistance())
{
scalar cosAngle = (normal0 & normal1);
vector avg = Zero;
if (cosAngle < (-1+planarCos))
{
// Opposite normals
avg = 0.5*(normal0-normal1);
}
else if (cosAngle > (1-planarCos))
{
avg = 0.5*(normal0+normal1);
}
if (avg != vector::zero)
{
avg /= mag(avg);
// Check normal distance of intersection locations
if (mag(avg&d) > mergeDistance())
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
else
{
return false;
}
}
// Mark small gaps
bool Foam::meshRefinement::isNormalGap
(
const scalar planarCos,
const vector& point0,
const vector& normal0,
const vector& point1,
const vector& normal1
) const
{
//- Hits differ and angles are oppositeish and
// hits have a normal distance
vector d = point1 - point0;
const scalar magD = mag(d);
if (magD > mergeDistance())
{
scalar cosAngle = (normal0 & normal1);
vector avg = Zero;
if (cosAngle < (-1+planarCos))
{
// Opposite normals
avg = 0.5*(normal0-normal1);
}
else if (cosAngle > (1-planarCos))
{
avg = 0.5*(normal0+normal1);
}
if (avg != vector::zero)
{
avg /= mag(avg);
d /= magD;
// Check average normal with respect to intersection locations
if (mag(avg&d) > Foam::cos(degToRad(45.0)))
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
else
{
return false;
}
}
bool Foam::meshRefinement::checkProximity
(
const scalar planarCos,
const label nAllowRefine,
const label surfaceLevel, // current intersection max level
const vector& surfaceLocation, // current intersection location
const vector& surfaceNormal, // current intersection normal
const label celli,
label& cellMaxLevel, // cached max surface level for this cell
vector& cellMaxLocation, // cached surface normal for this cell
vector& cellMaxNormal, // cached surface normal for this cell
labelList& refineCell,
label& nRefine
) const
{
const labelList& cellLevel = meshCutter_.cellLevel();
// Test if surface applicable
if (surfaceLevel > cellLevel[celli])
{
if (cellMaxLevel == -1)
{
// First visit of cell. Store
cellMaxLevel = surfaceLevel;
cellMaxLocation = surfaceLocation;
cellMaxNormal = surfaceNormal;
}
else
{
// Second or more visit.
// Check if
// - different location
// - opposite surface
bool closeSurfaces = isNormalGap
(
planarCos,
cellMaxLocation,
cellMaxNormal,
surfaceLocation,
surfaceNormal
);
// Set normal to that of highest surface. Not really necessary
// over here but we reuse cellMax info when doing coupled faces.
if (surfaceLevel > cellMaxLevel)
{
cellMaxLevel = surfaceLevel;
cellMaxLocation = surfaceLocation;
cellMaxNormal = surfaceNormal;
}
if (closeSurfaces)
{
// Pout<< "Found gap:" << nl
// << " location:" << surfaceLocation
// << "\tnormal :" << surfaceNormal << nl
/// << " location:" << cellMaxLocation
// << "\tnormal :" << cellMaxNormal << nl
// << "\tcos :" << (surfaceNormal&cellMaxNormal) << nl
// << endl;
return markForRefine
(
surfaceLevel, // mark with any non-neg number.
nAllowRefine,
refineCell[celli],
nRefine
);
}
}
}
// Did not reach refinement limit.
return true;
}
Foam::label Foam::meshRefinement::markProximityRefinement
(
const scalar planarCos,
const label nAllowRefine,
const labelList& neiLevel,
const pointField& neiCc,
labelList& refineCell,
label& nRefine
) const
{
const labelList& cellLevel = meshCutter_.cellLevel();
const pointField& cellCentres = mesh_.cellCentres();
const label oldNRefine = nRefine;
// 1. local test: any cell on more than one surface gets refined
// (if its current level is < max of the surface max level)
// 2. 'global' test: any cell on only one surface with a neighbour
// on a different surface gets refined (if its current level etc.)
// Collect candidate faces (i.e. intersecting any surface and
// owner/neighbour not yet refined.
labelList testFaces(getRefineCandidateFaces(refineCell));
// Collect segments
pointField start(testFaces.size());
pointField end(testFaces.size());
labelList minLevel(testFaces.size());
forAll(testFaces, i)
{
const label facei = testFaces[i];
const label own = mesh_.faceOwner()[facei];
if (mesh_.isInternalFace(facei))
{
const label nei = mesh_.faceNeighbour()[facei];
start[i] = cellCentres[own];
end[i] = cellCentres[nei];
minLevel[i] = min(cellLevel[own], cellLevel[nei]);
}
else
{
const label bFacei = facei - mesh_.nInternalFaces();
start[i] = cellCentres[own];
end[i] = neiCc[bFacei];
minLevel[i] = min(cellLevel[own], neiLevel[bFacei]);
}
}
// Extend segments a bit
{
const vectorField smallVec(rootSmall*(end-start));
start -= smallVec;
end += smallVec;
}
// Test for all intersections (with surfaces of higher gap level than
// minLevel) and cache per cell the max surface level and the local normal
// on that surface.
labelList cellMaxLevel(mesh_.nCells(), -1);
vectorField cellMaxNormal(mesh_.nCells(), Zero);
pointField cellMaxLocation(mesh_.nCells(), Zero);
{
// Per segment the normals of the surfaces
List<vectorList> surfaceLocation;
List<vectorList> surfaceNormal;
// Per segment the list of levels of the surfaces
labelListList surfaceLevel;
surfaces_.findAllHigherIntersections
(
start,
end,
minLevel, // gap level of surface has to be bigger
// than min level of neighbouring cells
surfaces_.gapLevel(),
surfaceLocation,
surfaceNormal,
surfaceLevel
);
// Clear out unnecessary data
start.clear();
end.clear();
minLevel.clear();
//// Extract per cell information on the surface with the highest max
// OBJstream str
//(
// mesh_.time().path()
// / "findAllHigherIntersections_"
// + mesh_.time().name()
// + ".obj"
//);
//// All intersections
// OBJstream str2
//(
// mesh_.time().path()
// / "findAllHigherIntersections2_"
// + mesh_.time().name()
// + ".obj"
//);
forAll(testFaces, i)
{
label facei = testFaces[i];
label own = mesh_.faceOwner()[facei];
const labelList& fLevels = surfaceLevel[i];
const vectorList& fPoints = surfaceLocation[i];
const vectorList& fNormals = surfaceNormal[i];
forAll(fLevels, hiti)
{
checkProximity
(
planarCos,
nAllowRefine,
fLevels[hiti],
fPoints[hiti],
fNormals[hiti],
own,
cellMaxLevel[own],
cellMaxLocation[own],
cellMaxNormal[own],
refineCell,
nRefine
);
}
if (mesh_.isInternalFace(facei))
{
label nei = mesh_.faceNeighbour()[facei];
forAll(fLevels, hiti)
{
checkProximity
(
planarCos,
nAllowRefine,
fLevels[hiti],
fPoints[hiti],
fNormals[hiti],
nei,
cellMaxLevel[nei],
cellMaxLocation[nei],
cellMaxNormal[nei],
refineCell,
nRefine
);
}
}
}
}
// 2. Find out a measure of surface curvature and region edges.
// Send over surface region and surface normal to neighbour cell.
labelList neiBndMaxLevel(mesh_.nFaces()-mesh_.nInternalFaces());
pointField neiBndMaxLocation(mesh_.nFaces()-mesh_.nInternalFaces());
vectorField neiBndMaxNormal(mesh_.nFaces()-mesh_.nInternalFaces());
for (label facei = mesh_.nInternalFaces(); facei < mesh_.nFaces(); facei++)
{
const label bFacei = facei-mesh_.nInternalFaces();
const label own = mesh_.faceOwner()[facei];
neiBndMaxLevel[bFacei] = cellMaxLevel[own];
neiBndMaxLocation[bFacei] = cellMaxLocation[own];
neiBndMaxNormal[bFacei] = cellMaxNormal[own];
}
syncTools::swapBoundaryFaceList(mesh_, neiBndMaxLevel);
syncTools::swapBoundaryFaceList(mesh_, neiBndMaxLocation);
syncTools::swapBoundaryFaceList(mesh_, neiBndMaxNormal);
// Loop over all faces. Could only be checkFaces.. except if they're coupled
// Internal faces
for (label facei = 0; facei < mesh_.nInternalFaces(); facei++)
{
const label own = mesh_.faceOwner()[facei];
const label nei = mesh_.faceNeighbour()[facei];
if (cellMaxLevel[own] != -1 && cellMaxLevel[nei] != -1)
{
// Have valid data on both sides. Check planarCos.
if
(
isNormalGap
(
planarCos,
cellMaxLocation[own],
cellMaxNormal[own],
cellMaxLocation[nei],
cellMaxNormal[nei]
)
)
{
// See which side to refine
if (cellLevel[own] < cellMaxLevel[own])
{
if
(
!markForRefine
(
cellMaxLevel[own],
nAllowRefine,
refineCell[own],
nRefine
)
)
{
if (debug)
{
Pout<< "Stopped refining since reaching my cell"
<< " limit of " << mesh_.nCells()+7*nRefine
<< endl;
}
break;
}
}
if (cellLevel[nei] < cellMaxLevel[nei])
{
if
(
!markForRefine
(
cellMaxLevel[nei],
nAllowRefine,
refineCell[nei],
nRefine
)
)
{
if (debug)
{
Pout<< "Stopped refining since reaching my cell"
<< " limit of " << mesh_.nCells()+7*nRefine
<< endl;
}
break;
}
}
}
}
}
// Boundary faces
for (label facei = mesh_.nInternalFaces(); facei < mesh_.nFaces(); facei++)
{
const label own = mesh_.faceOwner()[facei];
const label bFacei = facei - mesh_.nInternalFaces();
if (cellLevel[own] < cellMaxLevel[own] && neiBndMaxLevel[bFacei] != -1)
{
// Have valid data on both sides. Check planarCos.
if
(
isNormalGap
(
planarCos,
cellMaxLocation[own],
cellMaxNormal[own],
neiBndMaxLocation[bFacei],
neiBndMaxNormal[bFacei]
)
)
{
if
(
!markForRefine
(
cellMaxLevel[own],
nAllowRefine,
refineCell[own],
nRefine
)
)
{
if (debug)
{
Pout<< "Stopped refining since reaching my cell"
<< " limit of " << mesh_.nCells()+7*nRefine
<< endl;
}
break;
}
}
}
}
if
(
returnReduce(nRefine, sumOp())
> returnReduce(nAllowRefine, sumOp())
)
{
Info<< "Reached refinement limit." << endl;
}
return returnReduce(nRefine-oldNRefine, sumOp());
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
// Calculate list of cells to refine. Gets for any edge (start - end)
// whether it intersects the surface. Does more accurate test and checks
// the wanted level on the surface intersected.
// Does approximate precalculation of how many cells can be refined before
// hitting overall limit maxGlobalCells.
Foam::labelList Foam::meshRefinement::refineCandidates
(
const List<point>& insidePoints,
const scalar curvature,
const scalar planarAngle,
const bool featureRefinement,
const bool featureDistanceRefinement,
const bool internalRefinement,
const bool surfaceRefinement,
const bool curvatureRefinement,
const bool gapRefinement,
const label maxGlobalCells,
const label maxLocalCells
) const
{
const label totNCells = mesh_.globalData().nTotalCells();
labelList cellsToRefine;
if (totNCells >= maxGlobalCells)
{
Info<< "No cells marked for refinement since reached limit "
<< maxGlobalCells << '.' << endl;
}
else
{
// Every cell I refine adds 7 cells. Estimate the number of cells
// I am allowed to refine.
// Assume perfect distribution so can only refine as much the fraction
// of the mesh I hold. This prediction step prevents us having to do
// lots of reduces to keep count of the total number of cells selected
// for refinement.
// scalar fraction = scalar(mesh_.nCells())/totNCells;
// label myMaxCells = label(maxGlobalCells*fraction);
// label nAllowRefine = (myMaxCells - mesh_.nCells())/7;
////label nAllowRefine = (maxLocalCells - mesh_.nCells())/7;
//
// Pout<< "refineCandidates:" << nl
// << " total cells:" << totNCells << nl
// << " local cells:" << mesh_.nCells() << nl
// << " local fraction:" << fraction << nl
// << " local allowable cells:" << myMaxCells << nl
// << " local allowable refinement:" << nAllowRefine << nl
// << endl;
//- Disable refinement shortcut. nAllowRefine is per processor limit.
const label nAllowRefine = labelMax / Pstream::nProcs();
// Marked for refinement (>= 0) or not (-1). Actual value is the
// index of the surface it intersects.
labelList refineCell(mesh_.nCells(), -1);
label nRefine = 0;
// Swap neighbouring cell centres and cell level
labelList neiLevel(mesh_.nFaces()-mesh_.nInternalFaces());
pointField neiCc(mesh_.nFaces()-mesh_.nInternalFaces());
calcNeighbourData(neiLevel, neiCc);
// Cells pierced by feature edges
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
if (featureRefinement)
{
const label nFeatures = markFeatureRefinement
(
insidePoints,
nAllowRefine,
refineCell,
nRefine
);
Info<< "Marked for refinement due to explicit features "
<< ": " << nFeatures << " cells." << endl;
}
// Inside distance-to-feature
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
if (featureDistanceRefinement)
{
const label nCellsFeat = markInternalDistanceToFeatureRefinement
(
nAllowRefine,
refineCell,
nRefine
);
Info<< "Marked for refinement due to distance to explicit features "
": " << nCellsFeat << " cells." << endl;
}
// Inside refinement shells
// ~~~~~~~~~~~~~~~~~~~~~~~~
if (internalRefinement)
{
const label nShell = markInternalRefinement
(
nAllowRefine,
refineCell,
nRefine
);
Info<< "Marked for refinement due to refinement shells "
<< ": " << nShell << " cells." << endl;
}
// Refinement based on intersection of surface
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
if (surfaceRefinement)
{
const label nSurf = markSurfaceRefinement
(
nAllowRefine,
neiLevel,
neiCc,
refineCell,
nRefine
);
Info<< "Marked for refinement due to surface intersection "
<< ": " << nSurf << " cells." << endl;
}
// Refinement based on curvature of surface
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
if
(
curvatureRefinement
&& (curvature >= -1 && curvature <= 1)
&& (surfaces_.minLevel() != surfaces_.maxLevel())
)
{
const label nCurv = markSurfaceCurvatureRefinement
(
curvature,
nAllowRefine,
neiLevel,
neiCc,
refineCell,
nRefine
);
Info<< "Marked for refinement due to curvature/regions "
<< ": " << nCurv << " cells." << endl;
}
const scalar planarCos = Foam::cos(planarAngle);
if
(
gapRefinement
&& (planarCos >= -1 && planarCos <= 1)
&& (max(surfaces_.gapLevel()) > -1)
)
{
Info<< "Specified gap level : " << max(surfaces_.gapLevel())
<< ", planar angle " << radToDeg(planarAngle) << endl;
const label nGap = markProximityRefinement
(
planarCos,
nAllowRefine,
neiLevel,
neiCc,
refineCell,
nRefine
);
Info<< "Marked for refinement due to close opposite surfaces "
<< ": " << nGap << " cells." << endl;
}
// Pack cells-to-refine
// ~~~~~~~~~~~~~~~~~~~~
cellsToRefine.setSize(nRefine);
nRefine = 0;
forAll(refineCell, celli)
{
if (refineCell[celli] != -1)
{
cellsToRefine[nRefine++] = celli;
}
}
}
return cellsToRefine;
}
Foam::autoPtr<Foam::polyTopoChangeMap> Foam::meshRefinement::refine
(
const labelList& cellsToRefine
)
{
// Mesh changing engine.
polyTopoChange meshMod(mesh_);
// Play refinement commands into mesh changer.
meshCutter_.setRefinement(cellsToRefine, meshMod);
// Create mesh
// return map from old to new mesh.
autoPtr<polyTopoChangeMap> map = meshMod.changeMesh(mesh_);
// Update fields
mesh_.topoChange(map);
// Reset the instance for if in overwrite mode
mesh_.setInstance(name());
// Update intersection info
topoChange(map, getChangedFaces(map, cellsToRefine));
return map;
}
Foam::autoPtr<Foam::polyDistributionMap>
Foam::meshRefinement::refineAndBalance
(
const string& msg,
decompositionMethod& decomposer,
fvMeshDistribute& distributor,
const labelList& cellsToRefine,
const scalar maxLoadUnbalance
)
{
// Do all refinement
refine(cellsToRefine);
if (debug&meshRefinement::MESH)
{
Pout<< "Writing refined but unbalanced " << msg
<< " mesh to time " << name() << endl;
write
(
debugType(debug),
writeType(writeLevel() | WRITEMESH),
mesh_.time().path()/name()
);
Pout<< "Dumped debug data in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
// test all is still synced across proc patches
checkData();
}
Info<< "Refined mesh in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
printMeshInfo(debug, "After refinement " + msg);
// Load balancing
// ~~~~~~~~~~~~~~
autoPtr<polyDistributionMap> distMap;
if (Pstream::nProcs() > 1)
{
const scalar nIdealCells =
mesh_.globalData().nTotalCells()
/ Pstream::nProcs();
const scalar unbalance = returnReduce
(
mag(1.0-mesh_.nCells()/nIdealCells),
maxOp()
);
if (unbalance <= maxLoadUnbalance)
{
Info<< "Skipping balancing since max unbalance " << unbalance
<< " is less than allowable " << maxLoadUnbalance
<< endl;
}
else
{
scalarField cellWeights(mesh_.nCells(), 1);
distMap = balance
(
false, // keepZoneFaces
false, // keepBaffles
cellWeights,
decomposer,
distributor
);
Info<< "Balanced mesh in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
printMeshInfo(debug, "After balancing " + msg);
if (debug&meshRefinement::MESH)
{
Pout<< "Writing balanced " << msg
<< " mesh to time " << name() << endl;
write
(
debugType(debug),
writeType(writeLevel() | WRITEMESH),
mesh_.time().path()/name()
);
Pout<< "Dumped debug data in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
// test all is still synced across proc patches
checkData();
}
}
}
return distMap;
}
// Do load balancing followed by refinement of consistent set of cells.
Foam::autoPtr<Foam::polyDistributionMap>
Foam::meshRefinement::balanceAndRefine
(
const string& msg,
decompositionMethod& decomposer,
fvMeshDistribute& distributor,
const labelList& initCellsToRefine,
const scalar maxLoadUnbalance
)
{
labelList cellsToRefine(initCellsToRefine);
//{
// globalIndex globalCells(mesh_.nCells());
//
// Info<< "** Distribution before balancing/refining:" << endl;
// for (label proci = 0; proci < Pstream::nProcs(); proci++)
// {
// Info<< " " << proci << '\t'
// << globalCells.localSize(proci) << endl;
// }
// Info<< endl;
//}
//{
// globalIndex globalCells(cellsToRefine.size());
//
// Info<< "** Cells to be refined:" << endl;
// for (label proci = 0; proci < Pstream::nProcs(); proci++)
// {
// Info<< " " << proci << '\t'
// << globalCells.localSize(proci) << endl;
// }
// Info<< endl;
//}
// Load balancing
// ~~~~~~~~~~~~~~
autoPtr<polyDistributionMap> distMap;
if (Pstream::nProcs() > 1)
{
// First check if we need to balance at all. Precalculate number of
// cells after refinement and see what maximum difference is.
const scalar nNewCells =
scalar(mesh_.nCells() + 7*cellsToRefine.size());
const scalar nIdealNewCells =
returnReduce(nNewCells, sumOp())/Pstream::nProcs();
const scalar unbalance = returnReduce
(
mag(1.0-nNewCells/nIdealNewCells),
maxOp()
);
if (unbalance <= maxLoadUnbalance)
{
Info<< "Skipping balancing since max unbalance " << unbalance
<< " is less than allowable " << maxLoadUnbalance
<< endl;
}
else
{
scalarField cellWeights(mesh_.nCells(), 1);
forAll(cellsToRefine, i)
{
cellWeights[cellsToRefine[i]] += 7;
}
distMap = balance
(
false, // keepZoneFaces
false, // keepBaffles
cellWeights,
decomposer,
distributor
);
// Update cells to refine
distMap().distributeCellIndices(cellsToRefine);
Info<< "Balanced mesh in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
}
//{
// globalIndex globalCells(mesh_.nCells());
//
// Info<< "** Distribution after balancing:" << endl;
// for (label proci = 0; proci < Pstream::nProcs(); proci++)
// {
// Info<< " " << proci << '\t'
// << globalCells.localSize(proci) << endl;
// }
// Info<< endl;
//}
printMeshInfo(debug, "After balancing " + msg);
if (debug&meshRefinement::MESH)
{
Pout<< "Writing balanced " << msg
<< " mesh to time " << name() << endl;
write
(
debugType(debug),
writeType(writeLevel() | WRITEMESH),
mesh_.time().path()/name()
);
Pout<< "Dumped debug data in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
// test all is still synced across proc patches
checkData();
}
}
// Refinement
// ~~~~~~~~~~
refine(cellsToRefine);
if (debug&meshRefinement::MESH)
{
Pout<< "Writing refined " << msg
<< " mesh to time " << name() << endl;
write
(
debugType(debug),
writeType(writeLevel() | WRITEMESH),
mesh_.time().path()/name()
);
Pout<< "Dumped debug data in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
// test all is still synced across proc patches
checkData();
}
Info<< "Refined mesh in = "
<< mesh_.time().cpuTimeIncrement() << " s" << endl;
//{
// globalIndex globalCells(mesh_.nCells());
//
// Info<< "** After refinement distribution:" << endl;
// for (label proci = 0; proci < Pstream::nProcs(); proci++)
// {
// Info<< " " << proci << '\t'
// << globalCells.localSize(proci) << endl;
// }
// Info<< endl;
//}
printMeshInfo(debug, "After refinement " + msg);
return distMap;
}
// ************************************************************************* //
|