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International Heat Transfer Conference 11

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

OPTIMIZATION OF VERTICAL PIN-FIN HEAT SINKS IN NATURAL CONVECTIVE HEAT TRANSFER

Madhusudan Iyengar
Laboratory of the Thermal Management of Electronics, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA

Avram Bar-Cohen
Laboratory of the Thermal Management of Electronics, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455; and Defense Advanced Research Projects Agency (DARPA), Microsystems Technology Office, University of Maryland, College Park, MD

DOI: 10.1615/IHTC11.3540
pages 501-506

Abstract

The Aihara correlation is used to determine the optimal spacing and diameter for an isothermal array of fixed volume, appropriate for use with electronic equipment. A least-material optimization of these arrays is performed by extending the use of least-material single pin-fins to multiple pin-fin arrays. This analysis provides an engineering upper bound for heat dissipation from a fixed base area. The influence of the length of the pin-fin on the optimal horizontal spacing and diameter, and the optimal heat dissipation, from a fixed base area, are discussed, with reference to a specified heat sink configuration.

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