Comparative thermo-hydraulic analysis of periodic stepped open micro pin-fin heat sink

• Autorzy: Bhandari Prabhakar , Vyas Bhavesh , Padalia Diwakar , Ranakoti Lalit , Prajapati Yogesh Kumar , Bangari Raghubeer Singh

Identyfikatory

DOI

10.24425/ather.2024.151228

• Języki publikacji: EN

Abstrakty

EN

There is no doubt that the miniaturization of various electronic devices, including processors, servers, micro-electromechanical system devices, etc. has resulted in increased overall performance. However, there is a major problem with thermal management in these devices, as well as in many others. One of the most promising solutions is liquid cooled microchannel heat sink. In the current work, different cases of open micro pin-fin configurations of heat sink were considered. The configurations considered were a uniform height micro pin-fin heat sink, three-stepped unidirectional micro pin-fin heat sink and three-stepped bi-directional micro pin-fin heat sink. These configurations were also oriented in two dissimilar fashions, i.e. inline and staggered, so the total of six heat sink configurations are compared and analysed. Using single phase water as a coolant and copper as a substrate, these configurations were simulated numerically for different Reynolds numbers (10−160) under heat flux of 500 kW/m2 . It can be concluded that at low Reynolds numbers, steepness does not contribute much in both inline and staggered arrangements, while at higher Reynolds numbers, 3 stepped staggered configurations has revealed the best performance due to boosted fluid mixing and more projecting secondary flow. Furthermore, bi-directionality in steepness shows augmented performance only in inline arrangement.

Słowa kluczowe

EN

open microchannel heat sink; periodic stepped; out of plane fluid mixing; thermo-hydraulic performance; numerical analysis

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2024
• Tom: Vol. 45, no. 3
• Strony: 99--105
• Opis fizyczny: Bibliogr. 33 poz., rys.

Twórcy

autor

Bhandari Prabhakar

• Department of Mechanical Engineering, School of Engineering and Technology, K. R. Mangalam University, Gurugram-122103, Haryana, India

autor

Vyas Bhavesh

• Department of Electrical and Electronics Engineering, School of Engineering and Technology, K. R. Mangalam University, Gurugram-122103, Haryana, India

autor

Padalia Diwakar

• Department of Physics, School of Basic and Applied Sciences, K. R. Mangalam University, Gurugram-122103, Haryana, India

autor

Ranakoti Lalit

• Department of Mechanical Engineering, Graphic Era Deemed to Be University, Dehradun-248002, Uttarakhand, India

autor

Prajapati Yogesh Kumar

• Department of Mechanical Engineering, BIT Sindri, Dhanbad-828123, Jharkhand, India

autor

Bangari Raghubeer Singh

• Department of Mechanical Engineering, Graphic Era Hill University, Dehradun-248002, Uttarakhand, India

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Uwagi

[1] This work was supported by the K. R. Mangalam University, Gurugram, Haryana (India) through a Seed Research Grant (KRMU/ADMIN/SEED/2022-23/3493(B).

[2] Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).