I made a large box emitter and let some Marbles ran over it. But how could I have some interaction with the smoke and marbles? You know if marble is rolling over the smoke emitter, there should be an empty trail behind the marble for a few seconds - until the smoke start to rise again… …

Towards the end of the video, you scroll down to where it shows the collision approximation as Triangle Mesh. You have to switch this to convex hull or convex decomposition to work in this case. Even then, plane like that might end up making very thin convexes. So if that doesn’t work, do try a thi…

Interaction of Smoke and geometry objects

Omniverse Apps USD Composer (Create)

pekka.varis November 17, 2022, 9:52am 9

@areidmeyer you could also maybe help me to take this further: