Hi people,

I have a simulation of a tyre running through a small puddle. The tyre is moving quite quickly - only taking 5 frames to cover the distance. The idea is that I can leave the tyre-tread pattern behind for a few frames before the liquid forms back together again. Playing with the values is something I'm just going to have to experiment with.

Quick tyre splash [youtu.be]

I have two problems, but I'll put them in separate posts: -

The fluid particles seem to be moving in kind of a wave pattern, and much earlier than the tyre actually hitting them. I am guessing that because the wheel is moving so quickly that Houdini is looking ahead to the next frame (as well as the current frame) to do it's calculations, maybe?
I realise that there'd be some kind of wake formed as the tyre pushes the liquid out of the way. I've done this successfully at much lower speeds, but not this extreme and the splash is happening further forward than I imagined it would.

Would upping the sub-frames help?

Thanks,

Neil