Astonishing life of a coalescing drop on a free surface

被引：44

作者：

Honey, EM ^{[1
]}

Kavehpour, HP ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Complex Fluids & Interfacial Phys Lab, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW E | 2006年 / 73卷 / 02期

关键词：

D O I：

10.1103/PhysRevE.73.027301

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report an interesting feature in the consecutive steps of coalescing of a drop, which is called a cascade of partial coalescence. It is observed that as the secondary drop gets smaller, it bounces higher. We show that the capillary force is the main driving force for this phenomenon. By using ultra-high-speed video, it is revealed that the capillary force at the pinch off pulls the drop to the planar interface. The drop bounces off the interface and moves upward until it reaches the maximum height. A theory is developed that includes the capillary and gravitational forces and predicts this process.

引用

页码：1 / 4

页数：4

共 31 条

[1] SURFACE-TENSION-INDUCED MIXING FOLLOWING COALESCENCE OF INITIALLY STATIONARY DROPS [J].