A SEMI-THEORETICAL MODEL OF STABILITY OF VERTICAL FALLING LIQUID-FILMS

被引：4
|
作者：
TRELA, M
机构：
[1] Institute of Fluid Flow Machines, Polish Academy of Sciences, Gdańsk
来源：
CHEMICAL ENGINEERING SCIENCE | 1994年 / 49卷 / 07期
关键词：
D O I：
10.1016/0009-2509(94)80007-3
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A semi-theoretical model of minimum wetting rate for gravity-driven liquid films under isothermal conditions is presented. It is based on the experimental observations that disturbed liquid layers break up more easily than smooth ones and that the contact angle is a variable quantity. The theory comprises the main features of the three classical models used so far: flow distortion, force balance considerations, minimum-energy requirement. Some experimental evidence supports the main ideas of the model. There is a reasonably good agreement with respect to the boundaries of the transition region.
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页码：1007 / 1013
页数：7
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