Paper Key : IRJ************299
Author: Masoud Hatamigarousi,Peyman Norouzi Givi,Latifeh Arazipoor,Narges Fathali
Date Published: 03 Jan 2025
Abstract
This study investigates the thermal performance of rectangular microchannels using computational fluid dynamics (CFD) simulations, validated against experimental data. Various geometric configurations, including pins positioned at the entrance, exit, and distributed along the entire channel, were analyzed to optimize heat transfer. The results reveal that the "Pin in Front" configuration provides the best balance, outperforming the "All pin" configuration by 6% and the "Pin in back" configuration by 12% in thermal performance at low Reynolds numbers. At higher Reynolds numbers, the differences reduce to 2% and 5%, respectively, while the "Pin in Front" configuration consistently exhibits superior performance. Furthermore, increasing the pin height from 400 m to 700 m improves the Nusselt number by 22.5% at low Reynolds numbers and 20.5% at high Reynolds numbers, highlighting the importance of surface modifications in enhancing convective heat transfer. These findings provide critical insights for the design and optimization of advanced microchannel heat sinks for high-power applications.
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