[Ashley Seibert]

Oh I must not have saved after turning it off. I did set it to 0 and have been working with it. The gravity nodes were intentionally left empty. I was messing with them and couldn’t figure them out so I was going to come back to them later if I had time or if I ended up needing them.

I will edit the primitives to geometry. That does makes sense to do. The disc at the bottom of the tank was where I wanted the particles to start gathering on themselves. As for the scale would you suggest scaling up the whole project?

I can edit out the sky rig. That is a rig that was given to me by another animator who has been helping out with the project. The S&T has to stay though. My company has some 3D animations created already that they wanted me to copy as closely as possible and those animations use S&T. If you go to https://www.vega.com/en/home_us/Industries and click the Chemical industry you will see an animation with yellow dots. If you click into those that is a good example of what I’m going for. This file I’m working on now is a test to see if I can replicate it.

I did not realized that you could attach multiple nodes to the PPass. That is good to know. I will edit my expresso to match.

The upper particles are supposed to simulate the tray/weir area filling. I need to flip those upside-down to be more accurate. They need to fall into that space and gather like at the bottom except on a smaller scale.

My file is really messy so I apologize. I am still very new to C4D. Mostly YouTube taught, so I have developed some bad habits I am trying to break. Thank you so much for all of your advice!

Thanks,
Ashley

[Ashley Seibert]

Hi Steve,

Thanks for getting back to me.

I am using multiple emitter systems in my scene. I have one for the slurry falling from the pipe at the top, two in the center, one going up and one going down, the one going up is to simulate the slurry separating and the smaller bits mixing around in the water, and the one going down is the one to gather at the bottom and then dispense. I have 2 additional ones where the little particles have reached the top of the tank and are gathering in a tray. I have attached my scene file, and some screenshots to illustrate what I am talking about.

I have turned global gravity off. Do I have to do that in general when working with particles? The emitters seem to drop the particles faster and further.

I do have a PPass and a Pgroup set up in Xpresso (I have attached a screenshot of my set up for that).

I ended up adding an addition deflector at the bottom of the tank, but the particles don’t seem to have a self collision function so they are all piling into each other instead of mounding on top of each other. I was going to keyframe the deflector to turn on and off to simulate the tank emptying after the mound reaches a certain height.

Here is my project file:
12832_hydrodensityseparator.c4d.zip

Thanks,
Ashley