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ENH: snappyHexMesh: added to automatic gap-refinement capabilities

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1. multi-ray shooting. It now shoots rays in all the 3 coordinate directions
from the cell centre. Before it would shoot just a single ray from the
nearest point on the surface, going through the cell centre.

There is a cost overhead in that now it shoots 6 rays (+-x, +-y, +-z)
instead of just 1.

2. bleeding of refinement. It marks the cells inside a gap and walks out
the gap-size to neighbouring cells (which are just outside the gap). This
should make for a smoother refinement pattern.
This commit is contained in:
mattijs
2015-10-28 13:34:51 +00:00
parent 71db93570a
commit afa6bd5056
9 changed files with 975 additions and 478 deletions
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13
applications/utilities/mesh/generation/snappyHexMesh/snappyHexMeshDict
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@ -244,8 +244,17 @@ castellatedMeshControls
}
//sphere.stl
//{
// mode distance;
// levels ((1.0 5) (2.0 3));
// mode inside;
// levels ((1.0 4));
// // Optional override of uniform refinement level such
// // that in small gaps we're getting more cells.
// // The specification is
// // - numGapCells : minimum number of cells in the gap
// // - minLevel : min refinement level at which to kick in
// // - maxLevel : upper refinement level
// // All three settings can be overridden on a surface by
// // surface basis in the refinementSurfaces section.
// gapLevel (<numGapCells> <minLevel> <maxlevel>);
//}
}