MIXING BY RESONANT ACOUSTIC DRIVING IN A CLOSED-CHAMBER

In this study the effects of resonant acoustic oscillations on gas pha se mixing in a rectangular cavity without mean flow are investigated. The primary purpose of this research is to provide insight into how ac oustic amplitude, acoustic mode, and acoustic streaming influence the gas phase mixing rate inside the cavity. Experimental results show sig nificant enhancement of mixing rate due to the presence of acoustics i n the mixing chamber. Increased acoustic pressure amplitudes in the ch amber were shown to increase the mixing rate. The dependence of mixing rate upon the mode of acoustic excitation was found to be highly comp lex. Acoustic streaming observed and measured in the cavity appears to have a significant influence upon mixing rate.