First i assume you are talking about discrete event simulation. Such kind of courses are available in pretty much every university, in or out of IE. Easiest thing to do is to read winter simulation conference. s.ross wrote a book in simulation, but I personally do not like it. But because his presence, Berkeley is an obviously good choice. The systems engineering institute at U Maryland is pretty good and has some quality people doing simulation. if you are really interested in simulation, Zeigl