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+--- Thread: Particles in container penetrating through wall (/thread-4877.html)
Particles in container penetrating through wall - JuhaHo - 07-23-2025
I wonder what would be the correct way to make sure, that particles are not penetrating through container walls. Is it particle type issue or is there certain parameter?
RE: Particles in container penetrating through wall - tyFlow - 07-23-2025
You can try enabling CCD in the tyFlow > PhysX rollout, however that's not guaranteed to solve the problem when using Mesh mode in the PhysX Collision operator. The ideal collision mode for colliders is convex hull mode, but you'll need to make sure your container is split up into convex parts first (and that each convex part as a reasonable amount of thickness in order to form a proper hull). Perhaps it already is - you didn't post a screenshot of what the actual result looks like so it's impossible to tell.
RE: Particles in container penetrating through wall - JuhaHo - 07-23-2025
Thanks, I tested that. I didn't see much change. I'm now increasing substeps.
I cannot post any screenshots on actual geometry due to NDA.
RE: Particles in container penetrating through wall - JuhaHo - 07-24-2025
Increasing Substeps made things better. I think there's few options.
- On tyFlow menu Time step 1/8
- PhysX Substeps 12
- CCD Max step 4
I increased each of them and here are the latest values, which made the situation better - not perfect, but better. Which on of these is the value, I need to iterate?
I wonder, if it would be a good idea to limit the maximum speed of particles so the collision geometry would have the time to react? What would be the correct way to do that?
RE: Particles in container penetrating through wall - betamax - 07-24-2025
You can use a Limiter operator to do that.
Also check that you have no starting penetrations.