How does Fluent handle heat transfer and rough surfaces?
 

This is (potentially) my first CFD problem assigned at work, so be easy on me.

Can anyone tell me how (what equations, principles, assumtions, etc) Fluent deals with heat transfer in flows that are passing over rough surfaces (if it does at all)?

I found this: http://my.fit.edu/itresources/manual...ug/node253.htm

... but it only goes into velocity distributions, not so much heat transfer. The Fluent guide and google have come up empty otherwise, so i'm looking for a little help.

Thanks!

anyone know?