Mixed convection heat transfer in the entrance region of horizontal annuli

被引：36
|
作者：
Islam, N
Gaitonde, UN
Sharma, GK [1 ]
机构：
[1] Indian Inst Technol, Dept Mech Engn, Bombay 400076, Maharashtra, India
[2] Aligarh Muslim Univ, ZH Coll Engn & Technol, Dept Engn Mech, Aligarh 202002, Uttar Pradesh, India
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2001年 / 44卷 / 11期
关键词：
D O I：
10.1016/S0017-9310(00)00223-4
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present study deals with a numerical investigation of steady laminar mixed convection heat transfer in a horizontal concentric annulus using air and water as the working fluid. Special attention has been paid to the entrance region effect. The thermal boundary condition chosen is that of uniform heat flux at the inner wall and an adiabatic outer wall. The basic numerical procedure used is the SIMPLE algorithm [Int. J. Heat Mass Transfer 15 (2972) 1787] which uses the finite difference method for solving the momentum and energy equations. The investigations reveal that the Nusselt numbers for air are considerably greater than the corresponding values for fully developed mixed convection values over a significant portion of the annular duct. The numerical results were supplemented with some experimentally obtained data. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2107 / 2120
页数：14
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