Jet impingement cooling of a discretely heated portion of a protruding pedestal with a single round air jet

被引：23

作者：

Fleischer, AS ^{[1
]}

Nejad, SR ^{[1
]}

机构：

[1] Villanova Univ, Ctr Adv Commun, Dept Mech Engn, Villanova, PA 19085 USA

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2004年 / 28卷 / 08期

关键词：

jets; jet impingement; impingement heat transfer;

D O I：

10.1016/j.expthermflusci.2004.01.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The influence of a protruding pedestal oil impinging jet heat transfer is investigated. A discretely heated portion of a protruding pedestal is exposed to a single circular impinging air jet with Re = 10,000-30,000. Jet exit diameters of 3.5, 9.5 and 21 mm are positioned at jet exit-to-surface distances of 2-5 diameters. The nondimensional heat transfer over the discretely heated portion of the pedestal is compared to a flat plate design to gauge the effects of Reynolds number, jet diameter and jet exit-surface spacing. In all cases, the presence of the protruding pedestal downstream is found to increase heat transfer. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：893 / 901

页数：9

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