Title: Effect of cannelure fin configuration on compact aircooling heat sink
Authors: Wang, Chi-Chuan
Yang, Kai-Shing
Liu, Yang-Ping
Chen, Ing Youn
Department of Mechanical Engineering
Keywords: Heat sink;Interrupted fin;Dimple/cavity vortex generator;Cannelure
Issue Date: 1-Jul-2011
Abstract: The present study proposed a novel cannelure fin structure applicable to compact air-cooled heat sink under cross flow condition. A total of eight heat sinks were made and tested, including plain fin, oblique dimple type (I), oblique dimple type (II), straight cannelure, full oblique cannelure, half oblique cannelure with dimple/cavity type, half oblique cannelure with dimple/cavity type (II), and full oblique cannelure with dimple/cavity. Test results indicate that the proposed full cannelure fin along with the dimple/cavity structure can attain approximately 25% increase of heat transfer performance, and accompanies a friction reduction of about 20%. Moreover, converse to those interrupted fin or triangular vortex generator, it is found that the proposed fin structure still offers significant augmentation in fully developed region. The observed IR image of the temperature measurement of the test fin configurations also confirms the measurements. (C) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.applthermaleng.2011.02.003
ISSN: 1359-4311
DOI: 10.1016/j.applthermaleng.2011.02.003
Volume: 31
Issue: 10
Begin Page: 1640
End Page: 1647
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