Numerical Evaluation of Flow and Heat Transfer in Plate-Pin Fin Heat Sinks with Various Pin Cross-Sections

Zhou, Feng; Catton, I.

doi:10.1080/10407782.2011.588574

Cited by 117 publications

(58 citation statements)

References 36 publications

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“…The Nusselt number and pressure drop predictions are now compared with those of Zhou & Catton [3] for flow past PFHSs with solid pin fins. …”

Section: Validation Against Previous Studiesmentioning

confidence: 99%

“…As discussed above and following Leung & Probert [26], who found that with temperature differences of 40 o C and 77.5 o C for polished aluminium fins, the radiative heat loss is less than 5% and 8%, respectively of total heat transfer rate, radiative heat transfer is neglected. Air density and viscosity are assumed to be constant and equal to those at the inlet temperature of 25 o C. This model combines the accurate formulation of the k-model in the near-wall region with the free-stream independence of the k-one in the far field, and has been shown to predict highly separated flows accurately in a number of previous validation studies, Menter [27], Zhou & Catton [3].…”

Section: Conjugate Heat Transfer Modelmentioning

confidence: 99%

“…Following Zhou & Catton [3] and Leung & Probert [26], the thermal airflow through the heat sink is modelled using the k-SST model with automatic wall function treatment. As discussed above and following Leung & Probert [26], who found that with temperature differences of 40 o C and 77.5 o C for polished aluminium fins, the radiative heat loss is less than 5% and 8%, respectively of total heat transfer rate, radiative heat transfer is neglected.…”

Section: Conjugate Heat Transfer Modelmentioning

confidence: 99%

“…Convective heat transfer to heat sinks with extended surface fins provides the required heat transfer management in several important applications, including engines and turbine blades in the aerospace industry, automotive vehicle heat exchangers and gas-cooled nuclear reactors, Sahin et al [1,2]. At a smaller scale, convective heat transfer to air as it flows over a network of fins is also the most common approach to cooling microelectronics due to is low cost, availability and reliability, Zhou & Catton [3]. The surface fins offer a practical means of achieving large heat transfer area, without excessive primary surface area, and act as turbulence promoters thus further enhancing heat transfer rates.…”

Section: Introductionmentioning

confidence: 99%

“…Chiang's [5] experimental optimisation using Taguchi methods, they cannot overcome the intrinsic limitation that air flows smoothly through the heat sink channels, due to the parallel plate arrangement, limiting the achievable heat transfer rates. Pin fin heat sinks (PFHSs) can be an effective alternative to plate fin heat sinks since they have the advantage of hindering the development of the thermal boundary layer on smooth surfaces responsible for limiting the heat transfer rates in plate fin designs, Zhou & Catton [3]. Several previous investigations of heat transfer and pressure drops of PFHSs have demonstrated clearly their superiority over plate fin designs and have attempted to optimise these by studying, for 3 example, the effect of pin cross-sectional shape Soodphakdee et al [6], Jonsson & Moshfeghor [7] and the benefits of combining plate and pin fins within compound heat sinks, Yang & Peng [8,9].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

An experimental and computational investigation of thermal air flows through perforated pin heat sinks

Al‐damook

Kapur

Summers

et al. 2015

Applied Thermal Engineering

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“…The Nusselt number and pressure drop predictions are now compared with those of Zhou & Catton [3] for flow past PFHSs with solid pin fins. …”

Section: Validation Against Previous Studiesmentioning

confidence: 99%

Section: Conjugate Heat Transfer Modelmentioning

confidence: 99%

Section: Conjugate Heat Transfer Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An experimental and computational investigation of thermal air flows through perforated pin heat sinks

Al‐damook

Kapur

Summers

et al. 2015

Applied Thermal Engineering

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Numerical investigation of hydrothermal performance over perforated conical pin heat sinks

Al‐Karooshi,

Chahrour,

Khalil

et al. 2023

Heat Trans

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Over the past few decades, researchers have shown significant interest in enhancing the thermal efficiency of heat sinks while simultaneously increasing the power generation capacity of electronic devices and reducing their size. In this study, the focus lies on the originality of employing conical perforated pin heat sinks with multiple perforations (N = 0, 1, 2, and 3) and various conical pins inclination angles (Φ = 0°, 1°, 2°, 3°, and 4°). The study aimed to numerically investigate the effects of a perforated conical pin and cone inclination angle on heat transfer, pressure drop, CPU temperature, and hydrothermal performance (HTP) across the heat sinks using a three‐dimensional, turbulent flow as k–ω SST model combined with the thermal conjugate model. A validated CFD model is employed to conduct a parametric analysis of the effects of the quantity and placement of circular holes. A summary of the results reveals that Model B3 exhibited the highest HTP value, reaching approximately 1.15 at U = 10 m/s, with a commendable reduction in heat sink mass of over 18%. Ultimately, the perforated conical pin heat sink demonstrates the potential to fulfill the primary objective of this investigation, which is achieving an overall improvement in Nusselt number, CPU temperature, pressure drop, and reduced heat sink mass.

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Experimental and numerical studies of the effect of perforation configuration on heat transfer enhancement of pin fins heat sink

Alpha,

Aondover,

Kuhe

2024

Heat Trans

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In this study, experimental and computational studies of the impact of forced convective flow on the heat transfer characteristics of staggered pin fins with perforations are investigated in a rectangular channel at constant heat flux with Reynolds numbers (Re) of 2 × 103–12 × 103. In particular, cylindrical pin fins with circular longitudinal (L) perforation, longitudinal/transverse (LT) perforation, and longitudinal/transverse/vertical (LTV) perforation perforations are compared to solid pin fins to find out how adding different perforation arrays affects overall heat transfer performance and also to find the best perforation configuration for maximum performance. ANSYS‐FLUENT is employed for numerical simulation, validated by experimental data. Experimental validation is conducted by attaching the heat sink to a Peltier module, inducing heat generation through current on one face in the Armfield Free and Forced Convection Heat Transfer Service Units HT 19 and HT10XC. Results highlight significant increases in Nusselt number (Nu) for perforated pins compared to solid pins, with L perforations at 8%, LT perforations at 33%, and 67% for LTV perforated pins due to transverse perforations that act as slots, which stir up the primary flow and induce secondary flow generated by vertical perforations. Regarding pressure drops, L perforations reduce by 9%, LT by 19%, and LTV by 27% compared to solid pins. The overall enhancement ratio peaks at the minimum Reynold number, notably achieving a 38% increase in the LTV perforation pin fin array. This innovative study holds promise for diverse electronic applications, offering enhanced heat transfer performance in electronic cooling systems.

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Numerical Evaluation of Flow and Heat Transfer in Plate-Pin Fin Heat Sinks with Various Pin Cross-Sections

Cited by 117 publications

References 36 publications

An experimental and computational investigation of thermal air flows through perforated pin heat sinks

An experimental and computational investigation of thermal air flows through perforated pin heat sinks

Numerical investigation of hydrothermal performance over perforated conical pin heat sinks

Experimental and numerical studies of the effect of perforation configuration on heat transfer enhancement of pin fins heat sink

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