pect Ratio Isn't Always Bad in CFD

Added: 2026-06-02

[00:00:00]Most engineers think high aspect ratio cells are bad. They are wrong. AO sometimes in boundary layers gradients are steep normal to the wall but gentle along it. A prism cell stretch 50 to1 matches the physics perfectly. You need far fewer cells and get better accuracy.

[00:00:20]But in bulk flow where gradients go in all directions, high aspect ratio smears everything. The rule is simple. Match your cell shape to your gradient direction.