期刊
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
卷 82, 期 -, 页码 62-71出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2014.03.016
关键词
Heat transfer; Natural convection; Interrupted fins; Optimum gap; Experimental study; Numerical simulation
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Mathematics of Information Technology and Complex Systems (MITACS)
Steady-state external natural convection heat transfer from vertically-mounted rectangular interrupted fins is investigated numerically and experimentally. FLUENT software is used to develop a 2-D numerical model for investigation of fin interruption effects. A custom-designed testbed was developed and 12 different aluminum alloy heatsinks with various geometric dimensions are machined and tested to verify the theoretical results. A comprehensive experimental-numerical parametric study is performed to investigate the effects of fin spacing, and fin interruption. Our results show that adding interruptions to vertically-mounted rectangular fins can enhance the thermal performance considerably and that an optimum fin interruption exists. A new compact correlation is proposed for calculating the optimum interruption length. The results of this work can be used to improve natural heat transfer from enclosures in a variety of electronics, power electronics and telecom applications. (c) 2014 Elsevier Masson SAS. All rights reserved.
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