Persistent holes in a fluid

被引：71

作者：

Merkt, FS ^{[1
]}

Deegan, RD ^{[1
]}

Goldman, DI ^{[1
]}

Rericha, EC ^{[1
]}

Swinney, HL ^{[1
]}

机构：

[1] Univ Texas, Ctr Nonlinear Dynam, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.92.184501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe stable holes in a vertically oscillated 0.5 cm deep aqueous suspension of cornstarch. Holes appear only if a finite perturbation is applied to the layer for accelerations a above 10g. Holes are circular and approximately 0.5 cm wide, and can persist for more than 10(6) cycles. Above asimilar or equal to17g the rim of the hole becomes unstable, producing fingerlike protrusions or hole division. At higher acceleration, the hole delocalizes, growing to cover the entire surface with erratic undulations. We find similar behavior in an aqueous suspension of glass microspheres.

引用

页码：184501 / 1

页数：4

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