NUMERICAL STUDY OF LIQUID-FILM COOLING IN A TURBULENT GAS-STREAM

被引:28
|
作者
YAN, WM [1 ]
SOONG, CY [1 ]
机构
[1] CHUNG CHENG INST TECHNOL, DEPT AERONAUT ENGN, TAYUAN 33509, TAIWAN
关键词
D O I
10.1016/0017-9310(93)90138-V
中图分类号
O414.1 [热力学];
学科分类号
摘要
A numerical method for analyzing liquid film cooling along an inclined plate in a turbulent stream of air is presented. Heat and mass transfer characteristics in an air-water system are mainly considered. A marching procedure is employed for solutions of the equations of mass, momentum, energy and concentration in the system. The effects of the inclined angle phi, free-stream temperature T(infinity), free-stream velocity u(infinity) and inlet film thickness delta on the heat and mass transfer along the gas-liquid interface are examined in detail. Results show that an increase in free-stream temperature or velocity may cause a reduction in interfacial temperature, while an increase in inclined angle or inlet film thickness results in an increase in interfacial temperature. Additionally, a reduction in inclined angle phi causes an increase in interfacial temperature, which in turn leads to a larger latent heat flux and mass evaporation rate.
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页码:3877 / 3885
页数:9
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