Theoretical and Experimental Analysis of Turbulent Liquid Film Flowing down a Vertical Surface

被引：0
|
作者：
Sinkunas, S. [1 ]
Gylys, J. [1 ]
Kiela, A. [2 ]
机构：
[1] Kaunas Univ Technol, Dept Thermal & Nucl Energy, Donelaicio 20, LT-44239 Kaunas, Lithuania
[2] Kaunas Coll, Tech Sci, LT-50468 Kaunas, Lithuania
来源：
ELECTROMECHANICAL AND SYSTEMS ENGINEERING | 2009年 / 15卷
关键词：
Heat transfer; Turbulent film; Velocity profiles;
D O I：
10.4028/www.scientific.net/AMM.15.3
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The purpose of the present study is to obtain a comprehension for the momentum and heat transfer developments in gravitational liquid film flow. Analytical study of stabilized heat transfer for turbulent film was performed. A calculation method of the local heat transfer coefficient for a turbulent film falling down a vertical convex surface was proposed. The dependence of heat flux variation upon the distance from the wetted surface. has been established analytically. Experimental study of velocity profiles for turbulent liquid film flow in the entrance region is performed as well. Analysis of profiles allowed estimating the length of stabilization for turbulent film flow under different initial velocities.
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页码：3 / +
页数：2
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