Just google. There are a lot of tutorials.

https://www.youtube.com/watch?v=oOGkvrnKS-c

Dear Concli

Thanks for your answering. But the problem I asked is about a rotary system for using two FSI. Most tutorials for two way FSI I have found are more focusing on a static object and there is still no tutorials for showing us how to do a rotary system two way FSI simulation

Hi Zhengyu,

This is an interesting question. I think there is no any tutorial in Ansys portal regarding your problem. One of my colleagues had simulated similar problem in the left ventricle to rotating heart valves leaflets, see the following paper: http://dx.doi.org/10.1016/j.cmpb.2013.11.009 

It could be one possible approach to simulate a rotating structure using FSI in Ansys Fluent. You need to develop a UDF to calculate the moment exerted by the fluid to the interface and then rotate the structure accordingly (similar the heart valve leaflets). See the proposed framework 

Regards,

Siamak