Abstract
This study explores the cooling performance associated with single-phase hybrid micro-channel/micro-jet-impingement cooling method. A parametric study on the geometrical and operating parameters of hybrid cooling is numerically investigated. Appreciable temperature drop on the bottom surface of the micro-channel is achieved as a result of the strong impingement effects caused by reduced diameter of jet inlets, while the temperature on the bottom surface of the micro-channel increases with increasing the number of jet inlets due to weak impingement effects. The results also show that mean convective heat transfer coefficient of bottom wall can be achieved up to 11152 W/m2K using five jet inlets with diameter of 0.19 mm each.
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This work is supported by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 1615009756).
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Recommended by Associate Editor Seong Hyuk Lee
Seong Hoon Kim received B.S. degree from Sungkyunkwan University, Korea, in 2017. He is currently a M.S. candidate. His research interest includes two-phase heat transfer and its mechanistic modeling.
Hong-Cheol Shin received M.S. degree from Sungkyunkwan University, Korea, in 2018. He is currently a Ph.D. candidate. His research interest includes two-phase heat transfer and its mechanistic modeling.
Sung-Min Kim is an Assistant Professor at Sungkyunkwan University from 2015. He received his Ph.D. degree from Purdue University, USA, in 2012. His research interests include two-phase flow and heat transfer, high-heat-flux and high-efficiency heat transfer system, thermal energy storage, and high-performance fluid machinery.
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Kim, S.H., Shin, HC. & Kim, SM. Numerical study on cooling performance of hybrid micro-channel/micro-jet-impingement heat sink. J Mech Sci Technol 33, 3555–3562 (2019). https://doi.org/10.1007/s12206-019-0649-7
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DOI: https://doi.org/10.1007/s12206-019-0649-7