THERMAL SCIENCE

International Scientific Journal

Numan Habib

,

Muftooh Ur Rehman Siddiqi

,

Muhammad Tahir

THERMAL ANALYSIS OF PROPOSED HEAT SINK DESIGN UNDER NATURAL CONVECTION FOR THE THERMAL MANAGEMENT OF ELECTRONICS

ABSTRACT
The rapid development in the field of electronics has led to high power densities and miniaturization of electronic packages. Because of the compact size of electronic devices, the rate of heat dissipation has increased drastically. Due to this reason, the air-cooling system with a conventional heat sink is insufficient to remove large quantity of heat. A novel macro-channel ‘L-shaped heat sink’ is pro-posed and analyzed to overcome this problem. The thermal resistance and fluid-flow behavior under natural convection, of the novel and conventional air-cooled heat sink designs, are analyzed. Governing equations are discretized and solved across the computational domain of the heat sink, with 3-D conjugate heat transfer model. Numerical results are validated through experimentation. The effect of parameters i.e., fin height, number of fins and heat sink size, on the thermal resistance and fluid-flow are reported. Examination of these parameters provide a better physical understanding from energy conservation and management view point. Substantial increase in the thermal performance is noted for the novel ‘L-shaped heat sink’ compared to the conventional design.
KEYWORDS
heat sink, L-shape heat sink, novel design, thermal management, thermal analysis, heat transfer
PAPER SUBMITTED: 2021-04-02
PAPER REVISED: 2021-05-16
PAPER ACCEPTED: 2021-05-20
PUBLISHED ONLINE: 2021-11-06
DOI REFERENCE: https://doi.org/10.2298/TSCI210402307H
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 2, PAGES [1487 - 1501]
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Thermal analysis of proposed heat sink design under natural convection for the thermal management of electronics

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence