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

页码：1265 / 1268

页数：4

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