Nusselt number correlation for natural convection from vertical cylinders with vertically oriented plate fins

被引：45

作者：

An, Byoung Hoon ^{[1
]}

Kim, Hyun Jung ^{[1
]}

Kim, Dong-Kwon ^{[1
]}

机构：

[1] Ajou Univ, Dept Mech Engn, Suwon 443749, South Korea

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2012年 / 41卷

基金：

新加坡国家研究基金会;

关键词：

Nusselt number; Natural convection; Plate-fin heat sink; Cylinder; Heat transfer; HEAT-TRANSFER; TUBE;

D O I：

10.1016/j.expthermflusci.2012.03.010

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, we propose a correlation for estimating the Nusselt number for natural convection from cylinders with vertically oriented plate fins. For this purpose, extensive experimental investigations are performed for various fin numbers, fin heights, and base temperatures. The present correlation is applicable when the Rayleigh number, fin-height-to-cylinder-diameter ratio, and fin number are in the range 100,000-600,000, 1/6-1/2, and 9-72, respectively. From the correlation, a contour map depicting the thermal resistance as a function of the fin number and fin thickness is presented. The contour map shows the fin number and fin thickness at which the thermal resistance is minimized. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：59 / 66

页数：8

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