THERMAL ANALYSIS OF NATURAL CONVECTION AND RADIATION HEAT TRANSFER IN MOVING POROUS FINS

被引：15

作者：

Ndlovu, Partner L. ^{[1
,2
]}

Moitsheki, Raseelo J. ^{[1
]}

机构：

[1] Univ Witwatersrand, Sch Comp Sci & Appl Math, Private Bag 3, ZA-2050 Johannesburg, South Africa

[2] Stand Bank South Africa, 30 Baker St, ZA-2196 Johannesburg, South Africa

来源：

FRONTIERS IN HEAT AND MASS TRANSFER | 2019年 / 12卷

基金：

新加坡国家研究基金会;

关键词：

Analytical Solaria; DTM; Darcy's model; heat transfer; fins; CONDUCTION PROBLEM; GENERATION;

D O I：

10.5098/hmt.12.7

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this article, the Differential Transform Method (DTM) is used to perform thermal analysis of natural convective and radiative heat transfer in moving porous fins of rectangular and exponential profiles. This study is performed using Darcy's model to formulate the governing heat transfer equations. The effects of porosity parameter, irregular profile and other thermo-physical parameters, such as Peclet number and the radiation parameter are also analyzed. The results show that the tin rapidly dissipates heat to the surrounding temperature with an increase in the values of the porosity parameter and the dimensionless time parameter. The results also show that the heat transfer rate in an exponential profile with negative power factor is much higher than the rectangular profile.

引用

页数：8

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