[Stefanos M]

Good day,

I set up a domain with a Flettner rotor to calculate Lift, drag, and relative CL-CD for specific Re / SR / Y+.

The set-up trials include
A) 1 region
B) 2 regions (static-rotating)
C) 2 regions with overset mesh

The rotation simulated with:
1) MRF.
2) Sliding mesh.
3) Tangential velocity specification on the rotor boundary.

Only the 3rd option provided reasonable results and pressure distribution around the cylinder however the deviation from the literature results in terms of Lift and Drag is significant.

I would like to know if the specific effect needs a different approach to be captured.
You are more than welcome to share your thoughts.

I really appreciate any help you can provide.

[xixiha]

These power-ups provide strategic advantages, like protecting the ball from collisions or making it easier to collect gems, enhancing the overall fun and challenge of slope 3