Cone-like bubble formation in ultrasonic cavitation field

被引：148

作者：

Moussatov, A ^{[1
]}

Granger, C ^{[1
]}

Dubus, B ^{[1
]}

机构：

[1] CNRS, Inst Elect Microelect & Nanotechnol, Dept ISEN, UMR 8520, F-59046 Lille, France

来源：

ULTRASONICS SONOCHEMISTRY | 2003年 / 10卷 / 4-5期

关键词：

cavitation; bubble dynamics; Bjerknes forces; ultrasound; chemiluminescence;

D O I：

10.1016/S1350-4177(02)00152-9

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A new phenomenon in ultrasonic cavitation field is reported. Cavitation bubbles are observed to self-arrange in a cone-like macrostructure in the vicinity of transducer radiating surface. The cone-like macrostructure is stable while its branch-like pattern microstructure changes rapidly. The structure is constituted by moving bubbles which undergo attractive and repulsive Bjerknes forces caused by high acoustic pressure gradients and strongly nonlinear oscillations of cavitation bubbles. The cone-like bubble structure is a chemically active formation. Its remarkably high activity is confirmed by chemiluminescence experiments. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：191 / 195

页数：5