Thermal Science

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OPTIMIZATION OF MICRO PIN-FIN HEAT SINK WITH STAGGERED ARRANGEMENT

ABSTRACT

The effect of the pin-fin shapes on the overall performance of the carbon nanotube bundles as porous micro pin-fins with in-line and staggered arrangement for the heat transfer and pressure drop is studied using FLUENT 15.0. The results of the study revealed that at 100 < Re < 2000, triangle has the best performance followed by square, rectangle, hexagon and circle in 1 mm height, 15 mm width, and 45 mm length silicon rectangular mini-channel. The staggered configuration gave better heat transfer performance than in-line arrangement at all Reynolds numbers for all shapes with up to 19% thermal improvement but with up to 79% pressure drop differential. On a mini-channel surface with nanotube fins, the nanofluid (0.001 to 1%) increases the thermal performance up to 40% in comparison with water. The best thermal performance enhancement of 106% was obtained by using staggered triangular fins with larger fin height of 0.75 mm, smaller fin width of 0.5 mm, and spacing double the fin width and 0.01% CuO-water nanofluid followed by 103% with 0.01% Al2O3-water in comparison to channels with inline circular fins and water.

KEYWORDS

electronic cooling, computational fluid dynamics, pin-fin, mini-channels, nanofluid, carbon nanotube

PAPER SUBMITTED: 2016-12-21

PAPER REVISED: 2017-09-20

PAPER ACCEPTED: 2017-09-22

PUBLISHED ONLINE: 2017-10-07

DOI REFERENCE: https://doi.org/10.2298/TSCI161221202A

CITATION EXPORT: view in browser or download as text file

THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE No. 6, PAGES [2919 - 2931]

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Optimization of micro pin-fin heat sink with staggered arrangement

© 2026 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

THERMAL SCIENCE

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Kozhikkatil Sunil Arjun

Rakesh Kumar

OPTIMIZATION OF MICRO PIN-FIN HEAT SINK WITH STAGGERED ARRANGEMENT