Patch independent is top down approach. It ignores small features automatically. So your geometry must be having small features and that is why patch dependent mesh fails.
Please note that as you are trying to solve external flow, recommend to cross check if any important geometry features are ignored by patch independent meshing. Then proceed to solver.
If this helps, please mark this post as 'Is Solution' to help others.
Guidelines on the Student Community
How to access ANSYS help links
Please Login to Report Topic
Please Login to Share Feed