I've been playing around with SPH simulations, and in SPH as in any physics based simulation, the length of the time step in the integration process is critical. So, this video shows what happens right at the edge of numerical stability. With a fixed time step, the force calculation sometimes gives a force that's too large to be reasonably dealt with - this then causes a little chain reaction and results in some pretty unpredictable behaviour....

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…