Inside smoke

[bdemetz]

To fully understand what you are after, tell me if this is similar to what you are asking
--emit dense smoke into something like a concrete mixing barrel
--then shut off your emitter (similar to realflow)
--then let's say the barrel is on its side at an upward angle and rotating
--then you want the smoke to continously roll and hold a volume

If this is close to what you are after, you would need to make the smoke very dense and keep the gravity up. As far as I know, ffx calculates smoke to behave like real-world smoke that is always going to have some diffusion and expansion.