[KTG]

Hi Foamers,


I am using snappyHexMesh on a very simple, repetitive geometry - essentially just an array of boxes. The snapping process causes these tetrahedral areas that sort of propagate out from the snapped geometry, as seen in the before and after photos. I have been adjusting a lot of settings in an effort to get rid of them, but it generally just moves them around and I can't really justify the changes I made. Does anyone know the mechanism behind this, and how to fix it without massive refinement? I was considering making a really complicated blockMesh to get around things, but would rather just get better at general mesh design. The mesh is for DES, so I would rather opt for layers than more refinement levels, and I think the small tetrahedra outside the boundary layers are really jacking up my Co.


Thanks