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ENH: snappyHexMesh: refine by distance to feature

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This commit is contained in:
mattijs
2012-10-29 13:20:42 +00:00
parent 48646a26fb
commit 357939a770
6 changed files with 336 additions and 22 deletions
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119
src/mesh/autoMesh/autoHexMesh/meshRefinement/meshRefinementRefine.C
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@ -290,7 +290,7 @@ Foam::label Foam::meshRefinement::markFeatureRefinement
forAll(features_, featI)
{
const featureEdgeMesh& featureMesh = features_[featI];
const label featureLevel = features_.levels()[featI];
const label featureLevel = features_.levels()[featI][0];
const labelListList& pointEdges = featureMesh.pointEdges();
// Find regions on edgeMesh
@ -511,6 +511,90 @@ Foam::label Foam::meshRefinement::markFeatureRefinement
}
// 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 shells
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 is inside/outside shell 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])
{
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<label>())
> returnReduce(nAllowRefine, sumOp<label>())
)
{
Info<< "Reached refinement limit." << endl;
}
return returnReduce(nRefine-oldNRefine, sumOp<label>());
}
// Mark cells for non-surface intersection based refinement.
Foam::label Foam::meshRefinement::markInternalRefinement
(
@ -1128,6 +1212,7 @@ Foam::labelList Foam::meshRefinement::refineCandidates
const scalar curvature,
const bool featureRefinement,
const bool featureDistanceRefinement,
const bool internalRefinement,
const bool surfaceRefinement,
const bool curvatureRefinement,
@ -1196,8 +1281,24 @@ Foam::labelList Foam::meshRefinement::refineCandidates
nRefine
);
Info<< "Marked for refinement due to explicit features : "
<< nFeatures << " cells." << endl;
Info<< "Marked for refinement due to explicit features "
<< ": " << nFeatures << " cells." << endl;
}
// Inside distance-to-feature shells
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
if (featureDistanceRefinement)
{
label nShell = markInternalDistanceToFeatureRefinement
(
nAllowRefine,
refineCell,
nRefine
);
Info<< "Marked for refinement due to distance to explicit features "
": " << nShell << " cells." << endl;
}
// Inside refinement shells
@ -1212,8 +1313,8 @@ Foam::labelList Foam::meshRefinement::refineCandidates
refineCell,
nRefine
);
Info<< "Marked for refinement due to refinement shells : "
<< nShell << " cells." << endl;
Info<< "Marked for refinement due to refinement shells "
<< ": " << nShell << " cells." << endl;
}
// Refinement based on intersection of surface
@ -1230,8 +1331,8 @@ Foam::labelList Foam::meshRefinement::refineCandidates
refineCell,
nRefine
);
Info<< "Marked for refinement due to surface intersection : "
<< nSurf << " cells." << endl;
Info<< "Marked for refinement due to surface intersection "
<< ": " << nSurf << " cells." << endl;
}
// Refinement based on curvature of surface
@ -1254,8 +1355,8 @@ Foam::labelList Foam::meshRefinement::refineCandidates
refineCell,
nRefine
);
Info<< "Marked for refinement due to curvature/regions : "
<< nCurv << " cells." << endl;
Info<< "Marked for refinement due to curvature/regions "
<< ": " << nCurv << " cells." << endl;
}
// Pack cells-to-refine