The R4/5-problem in the drainage of dimpled thin liquid films

被引：30

作者：

Tsekov, R ^{[1
]}

机构：

[1] Univ Sofia, Dept Chem Phys, Sofia 1126, Bulgaria

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1998年 / 141卷 / 02期

关键词：

thin liquid films; dimple; film drainage; thinning rate;

D O I：

10.1016/S0927-7757(97)00253-7

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：

A new formula describing the thinning rate of dimpled thin liquid films is derived. In contrast to the Reynolds law, the predicted rate of drainage is inversely proportional to the film radius R raised to the power of 4/5 and is in excellent agreement with the known experimental results. It is demonstrated that the drainage of small films obeys the Reynolds formula and a criterion for the transition between the two regimes of thinning is proposed. An estimation of the thickness inhomogeneity in dimpled films is also obtained. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：161 / 164

页数：4

共 10 条

[1]

EXEROWA D, 1965, ANN U SOFIA FAC CHIM, V59, P207

[2]

JAIN RK, 1980, J CHEM SOC F2, P76

[3] ASYMMETRIC DRAINAGE IN FOAM FILMS [J].