Article
Thermodynamics
Yacine Khetib, Khaled Sedraoui, Abdellataif Gari
Summary: This study numerically investigated a micro-pin-fin heat sink to improve its cooling capability and productivity. It found that the RS configuration had the maximum heat transfer while also yielding the maximum pressure drop.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Yigit Serkan Sahin, Beytullah Ismet Toprak, Ismail Solmaz, Ozgur Bayer
Summary: With the rapid development in the electronics industry, the thermal management of high power density electronic products has become crucial. This study proposes an integrated heat sink composed of aluminum foam and pin-finned heat sink configurations as an effective solution for the thermal management of such electronic products. Through numerical investigation and experimental examination, the integrated heat sink demonstrates favorable heat removal and pressure drop characteristics under various design conditions.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Ziqiang He, Yunfei Yan, Li Zhang
Summary: The study found that micro heat sinks with arc ribbed pin-fins exhibit the best comprehensive performance, and staggered ribs arrangement performs better than in-line ribs arrangement. The average Nu number increases first and then decreases with the increase in rib width.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Yu Xu, Jiale Wang, Tong Li
Summary: This paper investigates the melting behavior of pin-fin heat sinks based on phase change materials under hypergravity conditions. The results show that hypergravity significantly affects the melting process, but the effect weakens with increasing hypergravity. The heat transfer enhancement due to pin-fins in the heat sinks is counteracted by their inhibition of heat convection of the liquid phase change material under hypergravity. Furthermore, hypergravity increases the tilt angle of the liquid level and the width of the unsubmerged area on the heating wall, potentially resulting in overheating damage.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Mohanad A. Alfellag, Hamdi E. Ahmed, Mohammed Gh Jehad, Marwan Hameed
Summary: The numerical investigation compared the Metal Foam Pin-Fin Heat Sink (MFPFHS) to the traditional Solid Pin-Fin Heat Sink (SPFHS) and found that the MFPF exhibited superior heat dissipation and reduced frictional losses. The study also showed that increasing the pin diameter ratio and the number of pins in the MFPF resulted in significant heat transfer enhancement and performance evaluation criteria improvement.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Thermodynamics
Ahmet Ali Sertkaya, Mukaddes Ozdemir, Eyub Canli
Summary: In this study, pin fin and plate heat sinks were investigated in terms of natural convection and radiation heat transfer by experimental means. It was found that increasing the number of pin fins up to a threshold can improve thermal performance, but beyond that threshold, the thermal convection coefficient decreases significantly. Increasing the number of pin fins partly compensates the reduction in thermal convection coefficient by increasing the surface area up to a certain level.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Ramaswamy Devakottai Sundaram, Srivatsan Madhavan, Prashant Singh, Srinath Ekkad
Summary: Combining array jet impingement with concentric micro pin-fins leads to enhanced heat dissipation without significant increase in pumping power. Additive manufacturing allows for the production of roughness elements with high accuracy, improving the manufacturability of such configurations. Experimental and numerical studies were conducted to characterize the heat transfer performance and validate the computational model, demonstrating the effectiveness of concentric micro pin-fins in heat transfer applications.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Daxiang Deng, Long Zeng, Wei Sun, Guang Pi, Yue Yang
Summary: A new type of open-ring pin fin microchannels (ORPFM) was proposed for advanced microchannel heat sinks, with inline arrangement showing improved boiling heat transfer, reduced pressure drop, and more stable flow boiling process at high heat fluxes through experimental investigation.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Amin Shahsavar, Mohammad Shahmohammadi, Ighball Baniasad Askari
Summary: The study demonstrates the significant influence of different fin heights on the hydrothermal performance and heat transfer of a pin-fin heat sink, with 2.25mm fin height showing a more uniform vorticity distribution and the highest Performance Evaluation Criterion (PEC), while 1.5mm fin height exhibits the lowest entropy generation rate.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Yanpei Huang, Qi Yang, Jianyin Miao, Kai Tang, Jingquan Zhao, Jinyin Huang, Yuandong Guo
Summary: This study proposes a radial micro pin-fin heat sink for heat dissipation of high-heat-flux hotspots, which combines the advantages of micro pin-fin structure and central inlet jet configuration. Experimental results show that this heat sink can maintain stable and outstanding heat transfer performance under different experimental conditions.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Ahmad Reza Roozbehi, Mohammad Zabetian Targhi, Mohammad Mahdi Heyhat, Ala Khatibi
Summary: This numerical study investigates the modification of the hexagonal pin fin geometry to enhance the thermal and hydraulic performance of a heat sink. The results show that a vertex angle of 60 degrees and a relative length of 1 yield the optimum performance of the heat sink.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Review
Energy & Fuels
Prabhakar Bhandari, Kamal S. Rawat, Yogesh K. Prajapati, Diwakar Padalia, Lalit Ranakoti, Tej Singh
Summary: Recent advancements in technology have highlighted the importance of micro pin fin heat sinks in dissipating heat flux. This review paper systematically analyzes the different aspects of micro pin fin design and suggests optimal design parameters for single phase fluid flow. Additionally, the study explores the potential of innovative pin fins, such as piranha, open ring, and lattice structures, in achieving effective cooling.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Young Jin Lee, Sung Jin Kim
Summary: The study optimizes the distribution of fin density using the Kriging method to reduce thermal resistance and weight.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
M. Abadi, A. A. Ranjbar, M. Gorzin, R. Bahrampoury, M. J. Hosseini
Summary: In this study, the influence of rotational angle of splitters attached to pin fins on the heat transfer performance was investigated for two cases of identical and opposite directions. The results showed that for the identical-direction case, as the angle increased, the heat transfer performance and turbulent kinetic energy increased, and the friction factor and pressure drop also increased. For the opposite-direction case, the heat transfer performance decreased from 0 to 45 degrees, but increased from 45 to 90 degrees, and the friction factor and pressure drop also increased.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
M. Abadi, A. A. Ranjbar, M. Gorzin, R. Bahrampoury, M. J. Hosseini
Summary: The influence of the rotational angle of splitters attached to pin fins on heat transfer improvement was investigated in this study. The results showed that, for the identical-direction case, as the angle increased, the average Nusselt number, turbulent kinetic energy, friction factor, and pressure drop increased. For the opposite-direction case, the friction factor and pressure drop also increased, and the Nusselt number decreased from 0 to 45 degrees but increased from 45 to 90 degrees.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
