Hi people, hope you're all doing well. I have a question for you if anyone can help me. I'm a beginner in CFD and a total noob in openfoam. I'm using snappyhexmesh to mesh a geometry on which I need to run a hydrodynamic simulation (basically solve for p, U and a scalar transport). But I get these weird artifacts on the mesh, and I have no idea if it's normal, and how to fix it if it's not. 1. first there those weird cells on "weird cell division.png" 2. and the surface on the two other images is not flat, there are those grey shaded triangles, I don't know what causes them. Can anyone explain please? If you need more details or specific files, ask me. Thaaanks https://cdn.discordapp.com/attachments/400697259819270145/1531070652411281418/Screenshot_2026-07-27_004158.png?ex=6a67e029&is=6a668ea9&hm=08408cfac66c369dbbcf1e6489ed3e2ce3597fa851d12f17f397923b5259c440& https://cdn.discordapp.com/attachments/400697259819270145/1531070652738703572/Screenshot_2026-07-27_004211.png?ex=6a67e029&is=6a668ea9&hm=5bc16bfd142900b49dbf4bdc0c54cc6793a724ef30f4b9357b2cfb8d01e97c91& https://cdn.discordapp.com/attachments/400697259819270145/1531070653107671160/weird_cell_division.png?ex=6a67e029&is=6a668ea9&hm=d31098f8f93bd53ddd0d3fcf70adbc55f71c05fbc25acf12030765ff5a987e68&