Numerical study and optimizing on micro square pin-fin heat sink for electronic cooling

Zhao, Jin; Huang, Shanbo; Gong, Liang; Huang, Zhaoqin

doi:10.1016/j.applthermaleng.2015.08.105

Cited by 166 publications

(36 citation statements)

References 21 publications

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“…The numerical results revealed that hexagon pin fin offers the lowest thermal resistance with better uniformity while the circular pin fin induce the lowest pressure drop. A similar study was reported by Zhao et al [4], who conducted optimization of the heat transfer performance of micro-channel heat sinks with square pin fins. Both pin-fin porosity and located angle were evaluated and the result indicated a strong dependency of the cooling performance on both parameters and an optimum value of these parameters offer higher cooling performance.…”

Section: Introductionsupporting

confidence: 56%

Entropy Generation and Heat Transfer Performance in Microchannel Cooling

Kurnia

Lim

Chen

et al. 2019

Entropy

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Owing to its relatively high heat transfer performance and simple configurations, liquid cooling remains the preferred choice for electronic cooling and other applications. In this cooling approach, channel design plays an important role in dictating the cooling performance of the heat sink. Most cooling channel studies evaluate the performance in view of the first thermodynamics aspect. This study is conducted to investigate flow behaviour and heat transfer performance of an incompressible fluid in a cooling channel with oblique fins with regards to first law and second law of thermodynamics. The effect of oblique fin angle and inlet Reynolds number are investigated. In addition, the performance of the cooling channels for different heat fluxes is evaluated. The results indicate that the oblique fin channel with 20° angle yields the highest figure of merit, especially at higher Re (250–1000). The entropy generation is found to be lowest for an oblique fin channel with 90° angle, which is about twice than that of a conventional parallel channel. Increasing Re decreases the entropy generation, while increasing heat flux increases the entropy generation.

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Section: Introductionsupporting

confidence: 56%

Entropy Generation and Heat Transfer Performance in Microchannel Cooling

Kurnia

Lim

Chen

et al. 2019

Entropy

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“…The proposed flow structures improve the temperature uniformity of the microchannel, which can be useful for the laminar heat transfer enhancement researches employing triangular, square and circular pin-fins [25][26][27][28]. As shown in Figure 3, when Re = 200, compared to Figure 2, the highest temperature region of pin-fin with both fillet and bulb has changed from the rear of the cylinder to the vortex region near the corner when Re changes from 50 to 200.…”

Section: Flow Structure and Temperature Distributionmentioning

confidence: 94%

Effects of Endwall Fillet and Bulb on the Temperature Uniformity of Pin-Fined Microchannel

Pan

et al. 2017

Entropy

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Endwall fillet and bulb structures are proposed in this research to improve the temperature uniformity of pin-fined microchannels. The periodical laminar flow and heat transfer performances are investigated under different Reynolds numbers and radius of fillet and bulb. The results show that at a low Reynolds number, both the fillet and the bulb structures strengthen the span-wise and the normal secondary flow in the channel, eliminate the high temperature area in the pin-fin, improve the heat transfer performance of the rear of the cylinder, and enhance the thermal uniformity of the pin-fin surface and the outside wall. Compared to traditional pin-fined microchannels, the flow resistance coefficient f of the pin-fined microchannels with fillet, as well as a bulb with a 2 µm or 5 µm radius, does not increase significantly, while, f of the pin-fined microchannels with a 10 µm or 15 µm bulb increases notably. Moreover, Nu has a maximum increase of 16.93% for those with fillet and 20.65% for those with bulb, and the synthetic thermal performance coefficient TP increases by 16.22% at most for those with fillet and 15.67% at most for those with bulb. At last, as the Reynolds number increases, heat transfer improvement of the fillet and bulb decreases.

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“…Similarly, Rubio-Jimenez et al [4] numerically investigate the influence of pin-fin density with both online and staggered distribution. Zhao [5] investigated the effects of square pin-fin density and angle on thermal performance, and obtain the optimal design. Furthermore, the geometrical characteristic also affects the performance of pin-fin heat sink.…”

Section: Introductionmentioning

confidence: 99%

Multi-factors Optimization Design of Pin-Fin Structure Using Respond Surface Method

Wang¹,

Chen²,

Tate³

2018

Proceedings of the 2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 201

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This study aims to find out the optimized solution for coupled effects of parameters. Different turbulence models were studied and RSM (Response Surface Methodology) was the most appropriate one to deal with optimization of target and investigate interaction of different parameters. In design height and diameter of cylindrical pin-fin was adopted as control parameters, according to numerical simulation the thermal resistance and pressure loss of pin-fin heat sink indicated improving tendency with increasing the both parameters. Sensitivity analysis was conducted to investigate the correlation of two geometrical parameters to response target. Less head loss and better cooling efficiency were achieved from an optimized structure.

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Numerical study and optimizing on micro square pin-fin heat sink for electronic cooling

Cited by 166 publications

References 21 publications

Entropy Generation and Heat Transfer Performance in Microchannel Cooling

Entropy Generation and Heat Transfer Performance in Microchannel Cooling

Effects of Endwall Fillet and Bulb on the Temperature Uniformity of Pin-Fined Microchannel

Multi-factors Optimization Design of Pin-Fin Structure Using Respond Surface Method

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