CONVECTIVE HEAT AND MASS-TRANSFER FROM A FALLING FILM TO A LAMINAR GAS-STREAM

被引：11

作者：

YAN, WM

机构：

[1] Department of Mechanical Engineering, Hua Fan College of Humanities and Technology, Taipei, Shih Ting

来源：

WARME UND STOFFUBERTRAGUNG-THERMO AND FLUID DYNAMICS | 1993年 / 29卷 / 02期

关键词：

D O I：

10.1007/BF01560076

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A numerical study has been made of convective heat and mass transfer from a falling film to a laminar gas stream between vertical parallel plates. The effects of gas-liquid phase coupling, variable thermophysical properties, and film vaporization have been considered. Simultaneous mass, momentum and heat transfer between liquid film and gas stream is numerically studied by solving the respective governing equations for the liquid film and gas stream together. The influences of the inlet liquid temperature and liquid flowrate on the cooling of liquid film are examined for air-water and air-ethanol systems. Results show that the heat transfer from the gas-liquid interface to the gas stream is predominantly determined by the latent heat transfer connected with film evaporation. Additionally, better liquid film cooling is noticed for the system having a higher inlet liquid temperature or a lower liquid flowrate.

引用

页码：79 / 87

页数：9

共 27 条

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