Thermal performance of micro-channel heat sink with metallic porous/solid compound fin design

Gong, Liang; Li, Yongtong; Zhang, Bai; Xu, Minghai

doi:10.1016/j.applthermaleng.2018.03.065

Cited by 71 publications

(13 citation statements)

References 26 publications

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“…They concluded that the finned metal foam heat sink outperforms the plate-fin heat sink, and the contact thermal resistance effect on thermal performance is negligible when reasonable interface bonding material is used. Gong et al [10] numerically analyzed the effects of metal foam/ solid compound fin design on the hydraulic and thermal performances, as depicted in Fig. 15.…”

Section: Metal Foam Heatmentioning

confidence: 99%

“…The effectiveness of heat transfer augmentation of metal foam heat sink is also evaluated by using the performance factor (pf) [10,49,83], defined in Eq. (2), which is utilized to estimate the heat transfer enhancement of metal foam heat sink compared to the base model at the condition of the same pumping power consumption.…”

Section: Metalmentioning

confidence: 99%

“…Metal foam offers considerable thermal-hydraulic and application advantages of lightweight, large specific area, high thermal conductivity, and intensive fluid mixing capability [7]. These desirable properties can significantly enhance convective heat transfer, which makes them a promising candidate for compact heat sinks [8], which have been demonstrated in some electronics thermal management applications [9][10][11]. Metal foam is also regarded as a promising material in other modern thermal engineering applications, such as compact heat exchangers, energy absorption, solar receivers, air conditioning systems, high power batteries, heat pipes, catalytic support, etc.…”

Section: Introductionmentioning

confidence: 99%

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A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

Gong

et al. 2021

Journal of Electronic Packaging

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High porosity metal foams offer large surface area per unit volume and have been considered as effective candidates for convection heat transfer enhancement, with applications as heat sinks in electronics cooling. In this paper, the research progress in thermo-hydraulic performance characterization of metal foams and their application as heat sinks for electronics cooling are reviewed. We focus on natural convection, forced convection, flow boiling, and solid/liquid phase change using phase change materials (PCMs). Under these heat transfer conditions, the effects of various parameters influencing the performance of metal foam heat sink are discussed. It is concluded that metal foams demonstrate promising capability for heat transfer augmentation, but some key issues still need to be investigated regarding the fundamental mechanisms of heat transfer to enable the development of more efficient and compact heat sinks.

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Section: Metal Foam Heatmentioning

confidence: 99%

Section: Metalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

Gong

et al. 2021

Journal of Electronic Packaging

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“…al. (2018) developed an approach to develop finned metal foam heat sinks with applications in electronics cooling [29]. The study presented the results as a function of fin spacing and foam size.…”

Section: Numerical Modelingmentioning

confidence: 99%

Determining the Thermal Effects of Channels on Porous Heat Sinks Under Forced Convection Conditions with Nanofluid: An Experimental and Numerical Study

Welsford¹

2021

Preprint

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The present study determines the effects which foam metals and Nanofluid have on the performance of a simulated CPU. The present study employs yAl2O3-water Nanofluid and 6061- T6 Aluminum foam metal with a porosity of 0.91 and permeability of 40 pores per linear inch formed in bulk media and porously filled channels. The concentrations evaluated are 0.1%, 0.3%, and 0.6% by volume. The study shall consider both original empirical results and numerical results obtained from COMSOL Multiphysics, showing good agreement with a maximum error of 4.3%. The present study. When considering the average Nusselt number as the representation of the strength of the heat transfer mechanism, and as such ignoring pumping requirements, it is shown that the use of porously filled channels interacting with 0.6% Nanofluid produces the most effective combination. However, when pumping power is relevant, a combination of bulk porous media interacting with 0.3% Nanofluid is observed. The results obtained herein can be applied to the cooling of electronics, or any other system wherein a general inward heat flux is applied.

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“…They found that the pulsating flow enhances the heat transfer as well as the temperature uniformity over the heated surface. In addition, Gong et al analyzed the effect of the porous fins on thermal performance and determine the optimal dimensionless porous fin thickness. Welsford et al studies the role of metal foam for heat storage utilizing nanofluid.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance of finned aluminum heat sink filled with ERG aluminum foam: Experimental and numerical approach

Bayomy

Saghir

2020

Int J Energy Res

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Summary The rapid improvements in electronic devices have led to a high demand for effective cooling techniques. The purpose of this study was to investigate the heat transfer characteristics and performance of different aluminum heat sinks filled with aluminum foam for an Intel core i7 processor. The aluminum foam heat sinks were subjected to water flow covering the non‐Darcy flow regime (300‐600 Reynolds numbers). The bottom side of the heat sinks was heated with a heat flux between 8.5 and 13.8 W/cm2. Three different heat sinks were examined in this study. Models A, B, and C contained two, three and four channels, respectively. Each channel gap was filled with ERG aluminum foam. The distributions of the local surface temperature and the local Nusselt number were measured for each heat sink design. The experimental data were compared with the numerical results. The average Nusselt number was obtained for the range of Reynolds numbers, and an empirical correlation of the average Nusselt number as a function of the Reynolds number was derived for each heat sink. The pressure drop across the characteristics of each heat sink design was measured. The thermal performance of each aluminum foam heat sink was evaluated based on the average Nusselt number and the required pumping power. The experimental results revealed that model B achieved the highest average Nusselt number compared with models A and C. However, model C had the highest surface to volume ratio; the thermal boundary layers, which are formed on adjacent fin surfaces inside the aluminum foam, interface with each other causing a reduction in the overall heat transfer. The numerical results were in good agreement with experimental data of local Nusselt number and local temperature with maximum relative errors of 2% and 1%, respectively.

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Thermal performance of micro-channel heat sink with metallic porous/solid compound fin design

Cited by 71 publications

References 26 publications

A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

Determining the Thermal Effects of Channels on Porous Heat Sinks Under Forced Convection Conditions with Nanofluid: An Experimental and Numerical Study

Thermal performance of finned aluminum heat sink filled with ERG aluminum foam: Experimental and numerical approach

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