Determination of velocity, size and concentration of ultrasonic cavitation bubbles by the phase-Doppler technique

被引：155
|
作者：
Tsochatzidis, NA [1 ]
Guiraud, P [1 ]
Wilhelm, AM [1 ]
Delmas, H [1 ]
机构：
[1] UPS, INP, CNRS, ENSIGC,UMR 5503,Lab Genie Chim, F-31078 Toulouse, France
来源：
CHEMICAL ENGINEERING SCIENCE | 2001年 / 56卷 / 05期
关键词：
cavitation bubbles; ultrasound; phase-Doppler; laser technique; acoustic streaming;
D O I：
10.1016/S0009-2509(00)00460-7
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
An experimental study about the velocity, size and concentration of ultrasonic cavitation bubbles is presented. Ultrasound is provided from a 20 kHz horn dipping vertically into a liquid container. Using the laser phase-Doppler technique, cavitation bubble velocity and size distributions are obtained at various locations inside the ultrasound field. Axial and radial profiles of average bubble velocity, mean diameters and volumetric flow rate are presented. The influence of ultrasound power input is also investigated: it increases bubble velocity quasi-linearly and has more complex effect on bubbles diameter. The system investigated possesses similar hydrodynamic properties with typical turbulent circular jet flows. (C) 2001 Published by Elsevier Science Ltd.
引用
收藏
页码：1831 / 1840
页数：10
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