Help with moving geometry.
 

I am trying to model a case where an object is moving in still air as opposed to the object being stationary and the air moving past it. Ultimately what I am looking for is how much the moving object disturbs the air as it moves past. However I am unsure how to model this in fluent. I tried making my object a moving wall, translating in the desired direction however my results don't make sense leading me to believe my understanding of a moving wall is incorrect.

Any help would be greatly appreciated.