THERMAL SCIENCE

International Scientific Journal

Vinod K. Venkiteswaran

,

Cheah C. Yee

,

Chia C. Ming

COMPARATIVE STUDY OF HEAT AND FLUID FLOW CHARACTERISTICS OF PARALLEL AND OFFSET STRIP FIN MICRO-CHANNELS USING CFD SIMULATIONS

ABSTRACT
The primary aim of this study was to consider novel configurations of water-cooled micro-channel layout and compare them with existing configurations. The authors emphasize on establishing a benchmark based on investigations by earlier researchers and numerically analysing them. As a first attempt, offset strip fins are compared with existing parallel fins in terms of subsequent flow fields and temperature profiles. In offset types designated as A and B, the highest velocities occur at the side channels because of the straight wall allowing smooth flow through the channel. Generally, for offset type, the velocity increases after the sidewalls towards the centre. Type A configuration had an uneven velocity profile because of its staggered channel entrance. The lowest average temperature was observed in parallel heat sinks, followed by type A and type B. Causes are discussed for the observed differences and criteria are suggested for the selection of an appropriate geometry of offset fins. An efficient cooling system will ensure effective working of equipment resulting in low energy consumption and better sustainability. This work opens a platform for research on various other configurations and their use in micro-channel cooling.
KEYWORDS
micro-channel, parallel fins, offset strip fins, numerical simulation
PAPER SUBMITTED: 2017-12-26
PAPER REVISED: 2018-04-03
PAPER ACCEPTED: 2018-04-04
PUBLISHED ONLINE: 2018-09-23
DOI REFERENCE: https://doi.org/10.2298/TSCI171226264V
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Issue 5, PAGES [1973 - 1985]
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Comparative study of heat and fluid flow characteristics of parallel and offset strip fin micro-channels using CFD simulations

© 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