Hydrothermal performance of inline and staggered arrangements of airfoil shaped pin-fin heat sinks: A comparative study

Babar, Hamza; Wu, Hongwei; Ali, Hafız Muhammad; Zhang, Wenbin

doi:10.1016/j.tsep.2022.101616

Cited by 14 publications

(2 citation statements)

References 46 publications

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“…Pan et al [14] proposed a staggered pin fin configuration which can considerably improve the heat dissipation rate in heat sinks. In this context, the configuration and size of the pins were able to reduce the recirculation zones and hot spots behind the pins [15,16] and consequently increased the heat transfer coefficients in the cooling system.…”

Section: Introductionmentioning

confidence: 99%

Effect of Trenched Hemispherical Pin Fins on Cooling Performance of Heat Sink

Yousfi,

Bellahcene,

Alqurashi

et al. 2024

Adv. Sci. Technol. Res. J.

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Pin fins have the potential to improve the thermal performance of various engineering devices. Modified pin fins could further increase their thermal performance in a passive way at lower cost. This study is aimed at numerically investigating the thermal performance of trenched hemispherical pin fins heat sink (THPFHS) and the influence of parameters including the trench number (N = 1, 3 and 5) and thickness (e = 1 to 5 mm). The simulations were performed using a computational fluid dynamics (CFD) software considering turbulent air flow conditions. Results showed that the use of aluminum fins fitted with one trench in the middle of the hemispherical pin fin considerably increased the local heat transfer. Furthermore, all studied configurations show high thermal performance factor (HTPF) compared with the conventional cylindrical pin fins heat sink (CPFHS). For this new configuration (THPFHS), Nu increases by 45% while the thermal resistance reduces by 42%, compared to the baseline case. On the other hand, this improved performance results in 50% pressure drop penalty. Moreover, the obtained results showed a significant improvement in the performance mainly at high Re.

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Section: Introductionmentioning

confidence: 99%

Effect of Trenched Hemispherical Pin Fins on Cooling Performance of Heat Sink

Yousfi,

Bellahcene,

Alqurashi

et al. 2024

Adv. Sci. Technol. Res. J.

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“…It is concluded in the study that the pin fins having larger length of pin at the entrance and having shorter longitudinal pitch at exit proved the better way to improve the heat transfer rate in the pin fin heat sink. In their study Hamza Babar et al [10] experimentally evaluated the inline and staggered pinfins heat sink having airfoil shape to determine their overall performance in electronic systems. The Reynolds number is varied from 600 to 860 and heating power varied from 75 W to 125 W to do the comparative study.…”

Section: Introductionmentioning

confidence: 99%

Computational Study on Forced Convection Heat Transfer in Pin Fin Heat Sink (PFHS) with Inclined Wings

Gurav,

Purohit,

Nalavade

2023

J. Phys.: Conf. Ser.

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Fins are used to enhance the rate of heat dissipation by increasing convection. The total amount of conduction, convection, or radiation of an object determines the amount of heat it transfers. A pin fin heat sink is acts as a heat exchanger and transfers the heat generated by an electronic or a mechanical device to a fluid medium, where it is dissipated away from the device which helps in proper functioning of device. The present investigation deals with the CFD simulation of heat dissipation and fluid flow behavior of pin fin heat sink with straight and inclined wings. The results show that pin fin with straight wings or wings at 0 degrees dissipate more heat than pin fin with inclined wings at 15 degrees.

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Investigation of pin and perforated heatsink cooling efficiency and temperature distribution

Göksu

2024

J Therm Anal Calorim

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The uneven temperature distribution resulting from thermal stresses in heat sinks is a significant issue in modern electronic devices. This numerical investigation utilizes fluid to analyze the cooling, flow, and heat transfer characteristics of eight different heat sink designs. These include pin–fin heat sinks with circular, triangular, square, and hexagonal cross-sections, as well as their perforated versions. The results show that the thermal resistance range for all geometries was between Rth = 0.29 and 0.51 K W−1. The circular cross-section pin structure was found to be the most efficient in terms of thermal resistance, while the triangular perforated structure was the least efficient. The narrow and low temperature distribution indicates a high cooling potential for the heat sink. It has been observed that the temperature range studied is between 308.732 and 315.273 K. The circular cross-section pin structure is most efficient in terms of homogeneous distribution between 308.73 and 311.306 K. The pin-type structure with a square cross-section attained the maximum Performance Evaluation Criteria (PEC) of 1.1872 at P = 689 Pa, while the pin-type structure with a triangular cross-section attained the lowest PEC of 0.67 at P = 2750 Pa. The investigation revealed that, in relation to PEC, perforated structures had superior performance compared to other pin designs, except for the square-section pin structure. This research found that measuring the efficiency of a heat sink based just on thermal resistance or average temperature distribution is not enough; the PEC criteria must also be taken into account.

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Hydrothermal performance of inline and staggered arrangements of airfoil shaped pin-fin heat sinks: A comparative study

Cited by 14 publications

References 46 publications

Effect of Trenched Hemispherical Pin Fins on Cooling Performance of Heat Sink

Effect of Trenched Hemispherical Pin Fins on Cooling Performance of Heat Sink

Computational Study on Forced Convection Heat Transfer in Pin Fin Heat Sink (PFHS) with Inclined Wings

Investigation of pin and perforated heatsink cooling efficiency and temperature distribution

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