Performance enhancement of heat sink with branched and interrupted fins

Ray, Rashmi; Mohanty, A. K.; Patro, Pandab; Tripathy, Kartik Chandra

doi:10.1016/j.icheatmasstransfer.2022.105945

Cited by 20 publications

(4 citation statements)

References 43 publications

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“…They changed the temperature difference (ΔT) between the fin base and the environment in the range of 10 °C to 60 °C (1.1×10 5 ≤ Ra ≤ 6.1×10 5 ). As a result, it has been observed that all heat sink designs provide better performance by branching the fins, taking into account the change in heat transfer rate (Q), specific heat transfer rate (Q/m), efficiency and Nusselt number (Nu) [10].…”

Section: Literature Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Optimum fin spacing of rectangular fins on aluminum heat sinks plates

KAYA,

KAYA

2023

Proc. Rom. Acad. Ser. A - Math. Phys. Tech. Sci. Inf. Sci.

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Aluminum heat sink cooling fin which are especially used for cooling electronic circuits, are directly related to their heat transfer capability and design. In heat transfer, the most important factors are the surface area where the heat is taken, the fin length, the distance between the fins, the airflow rate, and the thermal conductivity. In this study, the effects of the width between the fins on the heat transfer were investigated. In the study, the dimensions of the rectangular finned cooling plate were 200 mm in width, 200 mm in length, 25 mm in fin height, fin spacing between 4 and 2.5 mm, fin thickness of 0.5 mm and the number of fins between 100 and 66 pieces. The plate surface dimensions were kept constant, the fin spacing was narrowed, and the number of fins was increased. It was measured that the total heat wool transferred from the fins on the plate surface increased. The airflow rate was increased from the side surface of the plate and it was observed that the total heat load ejected from the rectangular fins increased.

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Section: Literature Studiesmentioning

confidence: 99%

“…As the distance D' between the fins on the plate increases, the amount of heat transfer also changes. The most suitable fin D' spacing (10) is determined according to the cooling plate that transfers the most heat [28]…”

Section: Large Fin Spacingmentioning

confidence: 99%

Optimum fin spacing of rectangular fins on aluminum heat sinks plates

KAYA,

KAYA

2023

Proc. Rom. Acad. Ser. A - Math. Phys. Tech. Sci. Inf. Sci.

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“…They concluded that better performance was achieved in the triangular pin-fin MWCNT heat sink as compared to others. Rahul et al [9] numerically explored the heat transfer enhancement in HS with branched and interrupted fins. They reported that HS with branched fins yielded better performance, and they further suggested that higher performance is obtained in HS with branched fins when the symmetrically oriented secondary fins of the branched fins are far from the base of the plate.…”

Section: Theoretical Referencementioning

confidence: 99%

Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin

Fetuga¹,

Olakoyejo²,

Adelaja³

et al. 2022

ITEGAM

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“…The study highlighted the importance of the proper selection of optimization objective functions, wherein, for the rectangular fin heat sink, the optimal constructs were based on the minimization of the MTR and ETR when the fin material function was set to 0.4. Ray et al [9] proposed a variety of designs using various configurations of branched and interrupted fins. Five innovative designs consisting of different permutations of branched and interrupted fins were proposed and analyzed.…”

Section: Introductionmentioning

confidence: 99%

A Parametric Design Study of Natural-Convection-Cooled Heat Sinks

McCay,

Nimmagadda,

Ali

et al. 2023

Fluids

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Effective natural-convection-cooled heat sinks are vital to the future of electronics cooling due to their low energy demand in the absence of an external pumping agency in comparison to other cooling methods. The present numerical study was carried out with ANSYS Fluent and aimed at identifying a more-effective fin design for enhancing heat transfer in natural convection applications for a fixed base-plate size of 100 mm × 100 mm under an applied heat flux of 4000 W/m2. The Rayleigh number used in the present study lied within the range of 2.6 × 106 to 4.5 × 106. Initially, a baseline case with rectangular fins was considered in the present study, and it was optimized with respect to fin spacing. This optimized baseline case was then validated against the semi-empirical correlation from the scientific literature. Upon good agreement, the validated model was used for comparative analysis of different heat sink configurations with rectangular, trapezoidal, curved, and angled fins by constraining the surface area of the heat transfer. The optimized fin spacing obtained for the baseline case was also used for the other heat sink configurations, and then, the fin designs were further optimized for better performance. However, for the angled fin case, the optimized configuration found in the scientific literature was adopted in the present study. The proposed novel curved fin design with a shroud showed a 4.1% decrease in the system’s thermal resistance with an increase in the heat transfer coefficient of 4.4% when compared to the optimized baseline fin case. The obtained results were further non-dimensionalized with the proposed scaling in terms of the baseline case for the two novel heat sink cases (trapezoidal, curved).

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Performance enhancement of heat sink with branched and interrupted fins

Cited by 20 publications

References 43 publications

Optimum fin spacing of rectangular fins on aluminum heat sinks plates

Optimum fin spacing of rectangular fins on aluminum heat sinks plates

Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin

A Parametric Design Study of Natural-Convection-Cooled Heat Sinks

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