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Acoustic Emission from Micro Bubbles in Ultrasound Field

Yoshizawa, Shin and Sugiyama, Kazuyasu and Matsumoto, Yoichiro (2001) Acoustic Emission from Micro Bubbles in Ultrasound Field. In: CAV 2001: Fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA. (Unpublished) http://resolver.caltech.edu/CAV2001:A2.003

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Abstract

Ultrasound is widely applied in the clinical field. It is essential to take a real understanding of dynamics of micro bubbles in these applications. But it has not been clarified yet. In this paper we numerically simulate a single micro bubble and bubble cloud, which consists of micro bubbles, in water. In the case of a single bubble, we conduct FFT analysis of acoustic pressure emitted from the bubble in ultrasound field, and we investigate the amplitude of second-harmonics and sub-harmonics. In the case of bubble cloud, we observe that pressure at the center of cloud drastically changes depending on the frequency of ultrasound.


Item Type:Conference or Workshop Item (Lecture)
Subject Keywords:ultrasound, micro bubble, bubble cloud, numerical simulation
Record Number:CAV2001:A2.003
Persistent URL:http://resolver.caltech.edu/CAV2001:A2.003
Usage Policy:The papers of this symposium proceedings are protected by copyright, retained by the authors. Authors control translation and reproduction rights to these works. However, readers are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format. This permission is in addition to rights of reproduction granted under Section 107, 108, and other provisions of the U.S. Copyright Act.
ID Code:126
Collection:CaltechCONF
Deposited By: Imported from CAV2001
Deposited On:01 Jun 2001
Last Modified:26 Dec 2012 07:09

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