Based on my comprehension to your question, i thinks you can define a new rotated coordinate system the rotate your nodes to that new coordinate system using NROTAT command.

You can do it by changing the Velocity Components in Setup without having to Rotate the Airfoil

Hi,

I do not clearly understand your question. Do you want to do transient simulation by rotating airfoil? Do you want to do steady simulation for every change of the angle of attack?

Abdullah Mohamed Hi , Thank you for the Replay ,

I already know that but it gonna require more nodes for that (not big deal ) but i am kinda out of time so evry second counts

Hi ,

what i want to make is a transient simulation for airfoil and collect data for aerodynamical performance for differente angels of attack . this is possible by juste changing the velocity component to get differente angels of attack .

what i want to do or at least to know if it is possible in Fluent is : if i can make a mesh of two zones (static and rotor )( which you can see in the pic ) and once i make the simulation for differente angels of attack i just rotate the airfoil mesh (circulare) Teguh Hady Ariwibowo Abdullah Mohamed .

i ve found that i can rotate the mesh than merge it together but the problem is that Fluent considere the circle perimetre as a wall not as interior .

Does anyone know how to solve this ?!

Hi,

I see. I thing you can use this as the reference. It seems similar to your case.

https://www.youtube.com/watch?v=93hxZuIA75I

Best regards