Mixing by resonant acoustic driving in a closed chamber

Abstract

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