u/Striking_Abrocoma_28

▲ 4 r/OpenFOAM+1 crossposts

STL recommended dimension?

Does someone have an idea of the recommended dimension of the triangles of the stl geometry file in order to make high we quality mesh with snappy?

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u/Striking_Abrocoma_28 — 18 hours ago
▲ 15 r/OpenFOAM+1 crossposts

SnappyHexMesh is the devil

Please, ai’m begging you. Someone help me!
I’m simulating a pantograph of a train in openfoam and I’m trying to create the mesh with snappy, but it’s unusable. I’ve simplified the geometry like a madman, I’ve erased everything non essential, but I still have a skewness of like 8/9 and I can’t lower it…
The thing that drives me crazy is that sometimes rotating the geometry of 180 deg lowers the skewness to 4.5… but sometimes it doesn’t. Since I need to analyse it for numerous angles of sideslip I can’t understand the behaviour of snappy and it’s driving me crazy… can someone help me?
I’ve used salire to export stl surfaces of very high quality, with all triangles of same dimensions and almost equilateral traingles, but it didn’t change anything… increasing the sano iterations by 8 times didn’t help either.. what can I do?

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u/Striking_Abrocoma_28 — 10 days ago