Observation of cavitation bubbles and acoustic streaming in high intensity ultrasound fields

We observed the behavior of acoustic cavitation by sonochemical luminescence and ultrasound B-mode imaging with ultrasound diagnostic equipment in a standing-wave ultrasound field and focused ultrasound field. Furthermore, in order to investigate the influence of acoustic streaming on acoustic cavit...

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Bibliographic Details
Published in:	Japanese Journal of Applied Physics Vol. 54; no. 7S1; pp. 7 - 12
Main Authors:	Uemura, Yuuki, Sasaki, Kazuma, Minami, Kyohei, Sato, Toshio, Choi, Pak-Kon, Takeuchi, Shinichi
Format:	Journal Article
Language:	English
Published:	The Japan Society of Applied Physics 01-07-2015
Online Access:	Get full text
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Summary:	We observed the behavior of acoustic cavitation by sonochemical luminescence and ultrasound B-mode imaging with ultrasound diagnostic equipment in a standing-wave ultrasound field and focused ultrasound field. Furthermore, in order to investigate the influence of acoustic streaming on acoustic cavitation bubbles, we performed flow analysis of the sound field using particle image velocimetry. We found that acoustic cavitation bubbles are stirred by circulating acoustic streaming and local vortexes occurring in the water tank of the standing-wave ultrasound exposure system. We considered that the acoustic cavitation bubbles are carried away by acoustic streaming due to the high ultrasound pressure in the focused ultrasound field.
ISSN:	0021-4922 1347-4065
DOI:	10.7567/JJAP.54.07HB05