TURBULENT MIXED CONVECTION IN ASYMMETRICALLY HEATED VERTICAL CHANNEL

被引：3
|
作者：
Mokni, Ameni [1 ,2 ]
Mhiri, Hatem [2 ]
Le Palec, Georges [1 ]
Bournot, Philippe [1 ]
机构：
[1] IUSTI UMR CNRS, Marseille, France
[2] Ecole Natl Ingenieurs Monastir, Unite Therm & Environm, Monastir, Tunisia
来源：
THERMAL SCIENCE | 2012年 / 16卷 / 02期
关键词：
vertical channel; jet; asymmetric heating; mixed convection; NATURAL-CONVECTION; ENHANCEMENT; INFINITE; PLATES; FLOW;
D O I：
10.2298/TSCI090403018M
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this paper an investigation of mixed convection from vertical heated channel is undertaken. The aim is to explore the heat transfer obtained by adding a forced flow, issued from a flat nozzle located in the entry section of a channel, to the up-goingfluid along its walls. Forced and free convection are combined studied in order to increase the cooling requirements. The study deals with both symmetrically and asymmetrically heated channel. The Reynolds number based on the nozzle width and the jet velocity is assumed to be 3.10(3) and 2.10(4); whereas, the Rayleigh number based on the channel length and the wall temperature difference varies from 2.57-10(10) to 5.15-10(12). The heating asymmetry effect on the flow development including the mean velocity and temperature, the local Nusselt number, the mass flow rate, and heat transfer are examined.
引用
收藏
页码：503 / 512
页数：10
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