Path instabilities of rising air bubbles in a Hele-Shaw cell

被引：48
|
作者：
Kelley, E [1 ]
Wu, MM [1 ]
机构：
[1] OCCIDENTAL COLL,DEPT PHYS,LOS ANGELES,CA 90041
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 07期
关键词：
D O I：
10.1103/PhysRevLett.79.1265
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The path of a circular air bubble rising in a viscous fluid of a Hele-Shaw cell is found to change from a straight path to a zigzag path when the Reynolds number of the bubble (proportional to the bubble terminal velocity) exceeds a threshold. By visualizing the wake structures of the rising bubbles, and measuring the actual paths of the bubbles, we demonstrate that the path instability is a consequence of the vortex shedding behind the bubble.
引用
收藏
页码：1265 / 1268
页数：4
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