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.

引用

页码：3 / +

页数：2

共 7 条

[1] Hydrodynamics of three-dimensional waves in laminar falling films
Adomeit, P
Renz, U
[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2000, 26 (07) : 1183 - 1208
[2] GIMBUTIS G, 1988, HEAT TRANSFER FALLIN
[3] Kays VM., 1972, CONVECTIVE HEAT MASS
[4] Wave characteristics of falling liquid film on a vertical circular tube
Kil, SH
Kim, SS
Lee, SK
[J]. INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2001, 24 (06): : 500 - 509
[5] Thickness and velocity of wavy liquid films on rotating conical surfaces
Makarytchev, SV
Langrish, TAG
Prince, RGH
[J]. CHEMICAL ENGINEERING SCIENCE, 2001, 56 (01) : 77 - 87
[6] TANANAYKO JM, 1975, ANAL EXPT METHODS FL
[7] von Karman T., 1939, T AM SOC MECH ENG, V61, P705

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