Maximum Limit of Foam

[Truffi]

Is there any chance for the user to set a maximum number of foam particles?

When working with foam on hit, I found it hard to regulate the final amount of foam particles. When foam is generated by splashes, numerous of my sims caused 3dsMax to freeze - probably simply due to particle number..

[TSR_trix]

Is it freezing during the simulation, or rendering?
My workflow is to use very low birth value at the beginning and iterate it bigger to get best results.

[Truffi]

It's freezing during simulation.

I am using the same method. However sometimes with liquids, the results of a high resolution simulation totally differs to the low res version of the same simulation set-up.
And to me it looks like this is especially the case with foam generation. I guess that's in the nature of things with liquid. So I am slowly learning to compensate it by adjusting values. But the learning curve is not really a steep one here.

Regardless of that, finding a way to set a limit of the maximum number of foam particles would help me to avoid these crashes.

[Ivaylo Katev]

i understand you problem, many times i have had the same here. there is no limit of the foam, i simulate the scene at least twice (actually more than twice), first with small count of particles, and when satisfied by the birth conditions and liquid behavior, i simulate it second time with the exact birth rate value. the birth rate is strongly linear and the particle count changes the same times as the birth rate.

[Truffi]

Still with "Foam on Hit" at 1.0 the number of foam particles can quickly get out of hand.

[Ivaylo Katev]

well, how many splash particles you have? are you sure that the only source of foam is the "foam on hit" option?

[Truffi]

I sometimes use a 0,1 value for foam birth, just to get a little bit of extra foam on top of ripple waves. I am not sure if this is the right way to go to achieve that. Anyways I can not outrule that this is what caused the crashes.

How many foam particles can be generated by one splash particle (with "foam on hit" at 1,0) ?
Just one?

[Ivaylo Katev]

foam on hit is the number of foam particles generated by single splash particle. 0.1 means that one per ten splash particle will produce a foam particle. can you share a screenshot of the input panel of a problematic scene just before the max freeze?

[Truffi]

I will as soon as it happens again.