Heat transfer mechanisms in an impinging synthetic jet for a small jet-to-surface spacing

被引：142

作者：

Valiorgue, P. ^{[1
]}

Persoons, T. ^{[1
]}

McGuinn, A. ^{[1
]}

Murray, D. B. ^{[1
]}

机构：

[1] Univ Dublin Trinity Coll, Dept Mech Engn, Dublin 2, Ireland

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2009年 / 33卷 / 04期

基金：

爱尔兰科学基金会;

关键词：

Synthetic jet; Convective heat transfer; Vortex quantification; Particle image velocimetry; Critical stroke length;

D O I：

10.1016/j.expthermflusci.2008.12.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Impinging synthetic jets have been identified as a promising technique for cooling miniature surfaces like electronic packages. This study investigates the relation between the convective heat transfer characteristics and the impinging synthetic jet flow structure, for a small jet-to-surface spacing H/D = 2, dimensionless stroke length 1 < L-0/D < 22, and Reynolds number 1000 < Re < 4300. The heat transfer measurements show evidence for a power law relationship between the Reynolds and Nusselt number for a constant stroke length. A critical stroke length L-0/H = 2.5 has been identified. Using phase-resolved particle image velocimetry, vortex quantification is applied to elucidate the influence of the impinging vortex on the time-averaged heat transfer distribution. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：597 / 603

页数：7

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