Numerical simulation of heat transfer and flow of cooling air in triangular wavy fin channels

被引：8

作者：

Ni Ming-long ^{[1
,2
]}

Chen Ya-ping ^{[1
]}

Dong Cong ^{[1
]}

Wu Jia-feng ^{[1
]}

机构：

[1] Southeast Univ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China

[2] Jiangsu Elect Power Design Inst, Nanjing 211102, Jiangsu, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2014年 / 21卷 / 07期

基金：

中国国家自然科学基金;

关键词：

triangular wavy fins; heat transfer coefficients; pressure drops; plate-fin heat exchangers; air cooling; FLUID-FLOW; EXCHANGER;

D O I：

10.1007/s11771-014-2238-3

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Numerical computation models of air cooling heat transfer and flow behaviors in triangular wavy fin channels (TWFC) were established with structural parameters of fins considered. The air side properties of heat transfer coefficient and pressure drop are displayed with variable structural parameters of fins and inlet velocities of cooling air. Within the range of simulation, TWFC has the best comprehensive performance when inlet velocity v(in)=4-10 m/s. Compared with those of straight fins, the simulation results reveal that the triangular wavy fin channels are of higher heat transfer performances especially with the fin structural parameters of fin-height F-h=9.0 mm, fin-pitch F-p=2.5-3.0 mm, fin-wavelength lambda=14.0-17.5 mm and fin-wave-amplitude A=1.0-1.2 mm. The correlations of both heat transfer factor and friction factor are presented, and the deviations from the experimental measurements are within 20%.

引用

页码：2759 / 2765

页数：7

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