I am using Fluent 6. Could anybody tell me the difference between the following boundary zones' types: 1-Internal 2-Interface 3-Interior

Would much appreciate if you exemplify on where they are used? Many thanks, Amr

Internal: is a general zero thickness BC inside the domain that you can use to apply internal BCs that introduce step changes in the flow conditions (i.e. fan BC)

Interface: BC to use with 2 adjacent cells whose mesh were built indipendently (2 overlapping faces not connected)

Interior: BC that requires no input from the user

Hope I made myself clear

Edi.

Thanks edi. I have posted a new message titled "Smoke simulation inside atriums".

Any