Origin of broadband acoustic emission from a dancing cavitation bubble

被引：1

作者：

Lee, Hyang-Bok ^{[1
]}

Choi, Pak-Kon ^{[2
]}

机构：

[1] Japan Womens Univ, Dept Math Phys & Comp Sci, 2-8-1 Mejirodai, Bunkyo Ku, Tokyo 1128681, Japan

[2] Meiji Univ, Dept Phys, Tama Ku, Kawasaki, Kanagawa 2148571, Japan

来源：

APPLIED PHYSICS EXPRESS | 2024年 / 17卷 / 12期

基金：

日本学术振兴会;

关键词：

acoustic cavitation; acoustic emission; broadband noise; single-bubble sonoluminescence; PHASE-DIAGRAMS; ROUTE; NOISE;

D O I：

10.35848/1882-0786/ad9b6b

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Acoustic cavitation generates bubbles exhibiting violent expansion and contraction under intense ultrasound in liquids. The acoustic emissions (AE) spectrum from cavitation bubbles contains harmonics, subharmonics, ultraharmonics, and broadband noise, depending on the bubble dynamics. Broadband noise is used to characterize the extent of acoustic cavitation although its origin is under debate. This study presents synchronous measurements of AE spectrogram and high-speed images of a dancing bubble in a single-bubble sonoluminescence system. A time-resolved correspondence between the results by the two techniques revealed that fragmentation and coalescence are the origin of broadband noise.

引用

页数：5

共 34 条

[1] Acoustic emission spectra from 515 kHz cavitation in aqueous solutions containing surface-active solutes [J].