This is a little scene Grant modeled and then I tweaked the parameters on the fluids, to find a good balance for this kinda of scene.
Interesting thing about the emission... The particles get emitted inside of that tube, but the tube is kinda of "small" for the number of particles that the emitter is putting out, so the pressure increases inside of the tube and the particles go away not just with gravity but also with the increasing pressure that's created inside of the emission container.
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