CFD clips

Computational Fluid Dynamics - this is the way engineers model fluid flow, i won't even try to explain it except that it divides a system up into 'boxes' and then performs the same calculation on each box (each box has a bunch of parameters associated with it like temperature and pressure) which in turn influences every box around it, repeat the calculation in each box using the new conditions - repeat until you're bored.
Iif you have enough boxes and enough computational power, you can get as much detail as you like. This clip is a truely impressive demonstration on where it's at and with Moore's Law, i can't see it slowing down anytime soon.