Coalescence between Two Small Liquid Drops

被引：2

作者：

Liu Shiping ^{[1
]}

Li Tongming ^{[1
]}

Jia Shaoyi ^{[1
]}

机构：

[1] Tianjin Univ, Dept Chem Engn, Tianjin 300072, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 1995年 / 11卷 / 11期

关键词：

Drop; Thin liquid film; Coalescence time;

D O I：

10.3866/PKU.WHXB19951108

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The coalescence process between two small drops of different sizes in pure liquid-liquid dispersions has been studied. When two small drops approach each other, a dimpled thin liquid film forward between them. A model is developed for the dynamics of the thinning film in which the influence of London-van der Waals force has been con sidered. The model predicts that the Coalescence time, which is the time required for the thinning and rupture of the liquid film, can be expressed only by the radii of the drops and the physical properties of two phases. A wide range of viscosity ratio of dispersed phase continuous phase is examined, Ho that the theoretical prediction is also valid for bubble coalescence in a liquid. It is shown that the coalescence times are strongly dependent on the viscosity ratios The prediction results are in good agreement. with the previous experimental results.

引用

页码：997 / 1003

页数：7