Numerical investigation of the effect of dual frequency sonication on stable bubble dynamics

Ultrasonics Sonochemistry
Kaouther Kerboua, Oualid Hamdaoui

Abstract

A computational study aiming to simulate an oxygen single acoustic bubble oscillation under a dual-frequency sonication was presented in this paper. The non-linear response of the bubble to the superposition of two fields of ultrasonic waves was investigated through dynamics parameters, collapse ratios and average velocities. The main goal of this analyze is to link the properties of the wave resulting from the dual-frequency excitation to the dynamics behavior of the bubble. The obtained results prove that, in contrast with the mono-frequency, coupling a wave to lower frequencies enhances the collapse duration and raises the compression ratio in the case of 35 kHz, while associating any of the studied waves to a higher frequency elevates the number of bubble oscillations during a time interval as compared to mono-frequency. The total sonochemical production has been investigated in accordance with the dynamics results, as well as the proportions of the three predominant free radicals, that show a dependency on the value of the basic frequency.

References

Aug 21, 2001·Ultrasonics Sonochemistry·K M Swamy, K L Narayana
Oct 26, 2002·The Journal of the Acoustical Society of America·Kyuichi Yasui
Dec 31, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Li Yuan
Oct 13, 2007·Ultrasonics Sonochemistry·Parag M KanthaleFranz Grieser
Sep 10, 2014·Ultrasonics Sonochemistry·Robert MettinAdriano Troia
Mar 21, 2018·Ultrasonics Sonochemistry·Kaouther Kerboua, Oualid Hamdaoui

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Citations

Nov 2, 2019·The Journal of the Acoustical Society of America·Kaouther Kerboua, Oualid Hamdaoui
Feb 12, 2021·Ultrasonics Sonochemistry·Kaouther KerbouaAbdulaziz Alghyamah

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