ok, well my water demo is finished, I didn't end up using a true navier system for fluid dynamics... however, I tried my first steps at cellular automata...

mathworld.wolfram.com/CellularAutomaton.html

it's based heavily on an nvidia demo from a few years ago, the demo will be up shortly, I just have to fix up some fogging, and environmental reflections stuff... also don't really want to put up a demo that isn't composited....