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Abstract:
With the continued improvement in integration and power density of electronic devices, it is difficult to simultaneously achieve excellent temperature uniformity and cooling performance with the increasing heat flux of electronic component. Herein, a multi-jet impinging system with trapezoidal fins and secondary channels, which can be used to efficiently cool the electronic component, is proposed. The effects of different jet arrangement patterns and geometric parameters on heat transfer in the heat sinks were investigated through numerical simulations. Individual parameter analysis was conducted, and the numerical results provided deep insight into heat transfer and flow mechanism. The unilateral jet arrangement patterns yielded larger heat transfer coefficients and pressure drops, but the bilateral jet arrangement pattern exhibited better comprehensive performance. The jet patterns with quasi-symmetric flow and heat transfer features showed a better dissipation performance, and the temperature difference of the heated surface was 2. To investigate the influences of the parameters comprehensively, the Taguchi optimization method was subsequently employed to analyze their effects on the pressure drop, heat transfer coefficient, and overall performance. Finally, the optimal parameter combinations and contribution ratios were obtained. The jet pattern and fin angle demonstrated the largest and smallest degrees of influence, respectively, among the optimization objectives. The proposed hybrid heat sink exhibited a better comprehensive performance than other types of heat sinks owing to the small product of the thermal resistance and pump power. The study provides a valuable perspective on multi-jet impinging system for electronic device cooling. © 2021 Elsevier Masson SAS
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Source :
International Journal of Thermal Sciences
ISSN: 1290-0729
Year: 2021
Volume: 164
3 . 4 7 6
JCR@2019
ESI Discipline: ENGINEERING;
ESI HC Threshold:30
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 5
SCOPUS Cited Count: 35
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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