FLIP + External Forces + RBD

[zeekindustries]

Hey everyone!

It's been a while since the last time I posted here because I was a little off from doing FX, but now I'm back on learning and stomped on some difficulties trying to do some collisions, flip and RBD simulations.

The problem is that everything goes fine until a certain frame and the next one everything is exploding. I'm not sure if I'm not feeding the proper collision to the simulation or if the external forces override the movement of the particles rather when collision with a geometry takes places.

A brief description of what I want to do is to achieve somewhat this kind of effect:

-Water being pulled updwards, colliding with an object and continue the fluid simulation motion from there

I'm attaching the .hip, some screenshots and a reference for what I want to do.

Thanks a lot for taking a look and if someone can point me in the right direction I will be very grateful.

Cheers!

kamigawa_v002.hip

 

Edited August 24, 2016 by zeekindustries

[dyei nightmare]

i dont have houdini 14 so i cant see your file,  but i would think about  a pump force,  search for pump forces,  or maybe  an atractor dop in dop pops.   

basically you need 2 velocity fields,  and sticky collisions on the flip node,    maybe a lesser vel field pointing to a your rbd object ,  and a very strong pointing upwards,   ill see if i can make an example  

Edited January 17, 2017 by dyei nightmare

[Hokmah]

Try to reduce your speed limit of particles maybe or try with proxy mesh with VDB for your collision object.