what boundary
 

hello all

I have a problem, I am new at gambit. I search lots but I can not find proper boundary for my problem. I want to circulate heat with air in closed body. I can not select face because there is no face outlet two body intersect the face only wall I can select or I do not know how to select. For example if I want to put a fan in the middle of the cyclinder (at 3d) is it possible? Image is below

Thanks lots.

http://img374.imageshack.us/my.php?image=admf8.jpg

Re: what boundary
 

You may need to actually model the fan, using rotating reference frames or sliding meshes.

Unless anyone else knows different?