http://www.youtube.com/watch?v=q_IoN-WSvMw
Previously I showed some flow techniques that relied on exploding geometry and animation techniques Recently a customer asked if there were simple ways to show flow, show Pressure Change and show Gas tanks filling up without having to rely on modifying the geometry even if it was all one piece or not even having geometry and, not using Key frame animation. Here are a couple of simple techniques that just might do the trick.
Enjoy,
Tod