Abstract: The article deals with acoustic flows formed in a thin gap between a flat disk emitter and a reflector. It is shown that the sound pressure gradient that occurs due to the presence of a heater and an aerosol leads to the appearance of vortex-type acoustic flows. Based on the results of modeling, it was found that the formation of acoustic vortices increases the concentration (more than 4 times) of dispersed particles in the immediate vicinity of the reflector surface, which helps to increase the probability of their collision. It was found that for a gas gap of 16 mm, the total mass of aerosol particles decreases by more than 3 times in 6 seconds.
Index terms: gas cleaning, ultrasound, coagulation, gas-dispersed system, aerosol, dust, vibrations, emitter.

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