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Multiple bug fixes: wet-on-cut faces must be wet; iteration in cut; consistent cut on processor boundary; adjust cut for 2-D geometries in case STL is not normal; report zero area IBM face

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This commit is contained in:
Hrvoje Jasak 2019-04-05 15:31:52 +01:00
parent 39501b9254
commit 9bdc8ce728
1 changed files with 99 additions and 13 deletions
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108
src/immersedBoundary/immersedBoundary/immersedBoundaryPolyPatch/immersedBoundaryPolyPatch.C
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@ -270,21 +270,22 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
// the tri surface. The cause of this can either be a stl that is not
// perfect or ther was an error in the inside/outside tri-search for other
// reasons. Look at the neigbours that are not CUT and assign their status.
const cellList& meshCells = mesh.cells();
const cellList& cells = mesh.cells();
forAll (intersectedCell, cellI)
{
if (intersectedCell[cellI] == immersedPoly::UNKNOWN)
{
// Check the neigbours
const cell& curCell = meshCells[cellI];
const cell& curCell = cells[cellI];
Switch foundWetNei = false;
Switch foundDryNei = false;
forAll (curCell, faceI)
{
// Only do the check for internal faces. If the face is boundary
// face then there is nothing to do. NOTE: parallelisation
// needed?
// face then there is nothing to do.
// NOTE: parallelisation needed?
if (mesh.isInternalFace(curCell[faceI]))
{
label own = intersectedCell[owner[curCell[faceI]]];
@ -403,7 +404,7 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
tss,
2*span,
internalFlow(),
false // iterate intersection
true // iterate intersection
);
// Calculate the intersection
@ -727,7 +728,7 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
// Check tri addressing
if (min(nearestTri) == -1)
{
FatalErrorIn("immersedBoundaryPolyPatch::calcImmersedBoundary() const")
FatalErrorInFunction
<< "Cannot find nearestTri for all points"
<< abort(FatalError);
}
@ -857,6 +858,7 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
// Internal faces
forAll (neighbour, faceI)
{
// Wet on wet
if
(
intersectedCell[owner[faceI]] == immersedPoly::WET
@ -866,6 +868,7 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
intersectedFace[faceI] = immersedPoly::WET;
}
// Dry on dry
if
(
intersectedCell[owner[faceI]] == immersedPoly::DRY
@ -875,6 +878,23 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
intersectedFace[faceI] = immersedPoly::DRY;
}
// Wet on cut face must remain wet. Error in cut cell is fixed
// by the Marooney Maneouvre. HJ, 5/Apr/2019
if
(
(
intersectedCell[owner[faceI]] == immersedPoly::WET
&& intersectedCell[neighbour[faceI]] == immersedPoly::CUT
)
|| (
intersectedCell[owner[faceI]] == immersedPoly::CUT
&& intersectedCell[neighbour[faceI]] == immersedPoly::WET
)
)
{
intersectedFace[faceI] = immersedPoly::WET;
}
// Special check for directly cut faces
// Wet-to-dry and dry-to-wet is a direct face cut
// Dry-to-cut or cut-to-dry are cutting errors. They will be
@ -922,6 +942,51 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
forAll (curOwnCut, patchFaceI)
{
// Wet on wet
if
(
intersectedCell[patchFaceI] == immersedPoly::WET
&& intersectedCell[patchFaceI] == immersedPoly::WET
)
{
intersectedFace[patchStart + patchFaceI] =
immersedPoly::WET;
}
// Dry on dry
if
(
intersectedCell[patchFaceI] == immersedPoly::DRY
&& intersectedCell[patchFaceI] == immersedPoly::DRY
)
{
intersectedFace[patchStart + patchFaceI] =
immersedPoly::DRY;
}
// Wet on cut face must remain wet. Error in cut cell is fixed
// by the Marooney Maneouvre. HJ, 5/Apr/2019
if
(
(
intersectedCell[patchFaceI] == immersedPoly::WET
&& intersectedCell[patchFaceI] == immersedPoly::CUT
)
|| (
intersectedCell[patchFaceI] == immersedPoly::CUT
&& intersectedCell[patchFaceI] == immersedPoly::WET
)
)
{
intersectedFace[patchStart + patchFaceI] =
immersedPoly::WET;
}
// Special check for directly cut faces
// Wet-to-dry and dry-to-wet is a direct face cut
// Dry-to-cut or cut-to-dry are cutting errors. They will be
// corrected later in corrected face areas, based on closed cell
// tolerance. HJ, 11/Dec/2017
if
(
(
@ -1040,7 +1105,7 @@ void Foam::immersedBoundaryPolyPatch::calcImmersedBoundary() const
tss,
span,
internalFlow(),
false // iterate intersection
true // iterate intersection
);
// Calculate the intersection
@ -1234,6 +1299,18 @@ void Foam::immersedBoundaryPolyPatch::calcCorrectedGeometry() const
label nMarooneyCells = 0;
// Get valid directions to avoid round-off errors in 2-D cases
const Vector<label> dirs = mesh.geometricD();
vector validDirs = vector::zero;
for (direction cmpt = 0; cmpt < Vector<label>::nComponents; cmpt++)
{
if (dirs[cmpt] > 0)
{
validDirs[cmpt] = 1;
}
}
forAll (cutCells, cutCellI)
{
const label ccc = cutCells[cutCellI];
@ -1274,15 +1351,15 @@ void Foam::immersedBoundaryPolyPatch::calcCorrectedGeometry() const
if (mag(curSumSf + ibSf[cutCellI]) > primitiveMesh::closedThreshold_)
{
// Info<< "Marooney Maneouvre for cell " << ccc
// << " error: " << mag(curSumSf + ibSf[cutCellI]) << " "
// << " S: " << curSumMagSf
// << " error: " << curSumSf + ibSf[cutCellI] << " "
// << " V: " << cutCellVolumes[cutCellI]
// << " Sf: " << ibSf[cutCellI] << endl;
// << " Sf: " << ibSf[cutCellI]
// << " corr S: " << curSumSf << endl;
nMarooneyCells++;
// Create IB face to ideally close the cell
ibSf[cutCellI] = -curSumSf;
ibSf[cutCellI] = cmptMultiply(validDirs, -curSumSf);
}
}
@ -1298,6 +1375,15 @@ void Foam::immersedBoundaryPolyPatch::calcCorrectedGeometry() const
<< endl;
}
}
if (min(mag(ibSf)) < SMALL)
{
WarningInFunction
<< "Minimum IB face area for patch " << name()
<< ": " << min(mag(ibSf)) << ". Possible cutting error. "
<< "Review immersed boundary tolerances."
<< endl;
}
}