NDLI: Numerical Simulation of Laminar Forced Convection of Pin-Fin Heat-Sink Array in a Channel by Using Porous Approach

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Numerical Simulation of Laminar Forced Convection of Pin-Fin Heat-Sink Array in a Channel by Using Porous Approach

Content Provider	MDPI
Author	Jeng, Tzer-Ming Tzeng, Sheng-Chung
Abstract	This work used a porous approach model to numerically investigate the fluid flow and heat transfer characteristics of the pin-fin heat-sink array in a rectangular channel with in-line arrangement. The air flow through the channel was laminar. The pin-fin heat sinks with various porosities and pin-fin numbers were employed. The relative center-to-center longitudinal and transverse distances between adjacent heat sinks were changed. The results indicate that the Nusselt number of various heat-sink arrays increased with decreasing the relative center-to-center transverse distance, but not varied with the relative center-to-center longitudinal distance. For the typical pin-fin heat-sink arrays, the Nusselt number changed slightly for the heat sinks with 0.358–0.556 porosity, but increased by 11.7%–24.8% when the porosity increased from 0.556 to 0.750, and then dropped obviously when the porosity exceeded 0.750. Increasing the number of pin fins continuously could increase Nusselt number. However, when the number of pin fins was large, the Nusselt number increased with the number of pin fins slowly. The present numerical simulation has been validated by the typical experiment. Finally, a semi-empirical correlation of Nusselt number for each heat sink in the heat-sink array was proposed.
File Size	5510144
Ending Page	1868
Page Count	23
Starting Page	1846
File Format	PDF
e-ISSN	20763417
DOI	10.3390/app5041846
Journal	Applied Sciences
Issue Number	4
Volume Number	5
Language	English
Publisher Date	2015-12-16
Access Restriction	Open
Subject Keyword	porous approach pin-fin heat sink heat-sink array heat transfer
Content Type	Text
Resource Type	Article

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