Particle Liquid

[MaverickMongoose]

Hi Dr Sassi, I'm trying to fill an animated beaker with some liquid that sloshes around a bit as the beaker moves.

I thought this would be a good opportunity to try out the new Particle system in C4D, but I'm struggling to get it to work.

I cant seem to give the particles any volume, they always seem to collapse to a thin pile rather than filling the container. I tried Seperation in the flock modifier but it doesnt really help, it just slows the sim way down.

Also the particles dont seem to want to stay in the jar even if I ramp the substeps way up.

Do you think this is even possible with particles?

I was hoping to get the sim right and put the particle group inside a volume mesher to make the liquid.

Here's my attempt so far anyway:

https://we.tl/t-IvrYzFuhk5

Thanks again

[Dr. Sassi]

Hi MaverickMongoose,

Thanks for the file. The first thing that stands out is the small object size; I would either adjust the sim size or set up the objects on a larger scale.
The second thing to mention is that particles do not collide with each other.

Cinema 4D has no fluids sim, and particles would need to have many connections among each other, like the inability to compress Volume while also sticking together and then not. I write this as an expectation management.

Many years ago, I was asked in a four-day hands-on class how to do fluids, so that is a long time ago, but my tip back then was to use spheres.
Here is this example.
https://www.youtube.com/watch?v=6RbvEZmlMwE

Please have a look at this simple setup. Perhaps cache the sim and the Volume first.
More spheres (smaller) might increase the effect.
CV4_2025_drs_24_SIfb_01.c4d

Cheers

P.S.: if Particles are a must
https://cineversity.maxon.net/en/tutorials/c4dquicktip-156-how-to-make-rigid-bodies-inherit-particle-attributes-in-cinema-4d

[MaverickMongoose]

Thanks for that, hadnt thought of using rigid bodies!

Was hoping I could use millions of particles to get a really detailed fluid sim - Fingers crossed Maxon adds a fluid system next, then it'll pretty much do everything!

Thanks for the setup though I think this will work fine for now, cheers!

[Dr. Sassi]

Thanks for the feedback, MaverickMongoose.

My best wishes for your project