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http://dx.doi.org/10.3795/KSME-B.2011.35.2.145

A Numerical Study of the Effects of Heat Transfer and Fluid Flow on Tube Insertion Length in Computer-Cooling Radiators  

Choi, Jin-Tae (Dept. of Mechanical Engineering, Korea Univ.)
Kwon, Oh-Kyung (Energy System Technology Center, Korea Institute of Industrial Technology)
Yun, Jae-Ho (Energy System Technology Center, Korea Institute of Industrial Technology)
Kim, Yong-Chan (Dept. of Mechanical Engineering, Korea Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.2, 2011 , pp. 145-152 More about this Journal
Abstract
The performance of flat-tube radiators with louvered fins was numerically investigated for different tube insertion lengths. The results of numerical analysis using CFX-11 were compared with experimental results. In this study, three types of flat-tube radiators with louvered fins were considered. An experiment was conducted to validate the numerical results. Flow rate ratio (FR) and Stotal were introduced to understand the uniformity of flow distribution easily. The results of numerical analysis revealed that the heat transfer rate and pressure drop increased as the mass flow rate increased. Further, the results showed that the heat transfer rate of sample 3 with h/D = 0.5 was higher than that of the other samples. The pressure drop increased as the insertion length toward the header part increased, and the pressure drop in the case of sample 3 appeared to be the highest. The factor Stotal showed that the uniformity of the flow distribution in the case of sample 1 with h/D = 0 was higher than that in the case of the other samples.
Keywords
CPU Cooling; Electronic Devices; Flat-Tube; Liquid-Cooling; Louver-Fin; Radiator;
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Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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