Combination technique for improving natural convection cooling in electronics

Document Type

Article

Publication Date

1-1-2007

Abstract

The combination of an appropriately placed cross-flow opening and a strategically positioned transversely vibrating plate is proposed as a means of augmenting pure natural convection in a vertical channel. This method is intended to provide a more efficient, reliable, and consumer conscious alternative to conventional techniques for lower power dissipating devices where standard natural convection cooling proves insufficient. Two-dimensional numerical simulations are employed to investigate this combination method using models consisting of a vertical channel containing two rectangular heat sources which are attached to a vertical mounting board, as well as a transversely oscillating plate and a cross-flow opening in the mounting board area between the two heat sources. Varied parameters and geometric configurations are studied. The results indicate the combined effects of the vibrating plate and the opening flow have the potential to cause significant improvement in the thermal conditions over pure natural convection. As much as a 70% improvement in the local heat transfer coefficient from that for a system with a board opening but without a vibrating plate was attained. © 2006 Elsevier SAS. All rights reserved.

Identifier

33750726112 (Scopus)

Publication Title

International Journal of Thermal Sciences

External Full Text Location

https://doi.org/10.1016/j.ijthermalsci.2006.03.007

ISSN

12900729

First Page

76

Last Page

92

Issue

1

Volume

46

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