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TECHNICAL PAPERS

Minimization of Heat Sink Mass Using CFD and Mathematical Optimization

[+] Author and Article Information
K. J. Craig, D. J. de Kock, P. Gauché

Department of Mechanical and Aeronautical Engineering, University of Pretoria, Pretoria 0002, South Africa

J. Electron. Packag 121(3), 143-147 (Sep 01, 1999) (5 pages) doi:10.1115/1.2792676 History: Received December 01, 1998; Revised April 01, 1999; Online November 05, 2007

Abstract

This paper describes the use of CFD and mathematical optimization to minimise heat sink mass given a maximum allowable heat sink temperature, a constant cooling fan power and heat source. Heat sink designers have to consider a number of conflicting parameters. Heat transfer is influenced by, amongst others, heat sink properties (such as surface area), airflow bypass and the location of heat sources, whilst size and/or mass of the heat sink needs to be minimized. This multiparameter problem lends itself naturally to optimization techniques. In this study a commercial CFD code, STAR-CD, is linked to the DYNAMIC-Q method of Snyman. Five design variables are considered for three heat source cases. Optimal designs are obtained within six design iterations. The paper illustrates how mathematical optimization can be used to design compact heat sinks for different types of electronic enclosures.

Copyright © 1999 by The American Society of Mechanical Engineers
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