Heat transfer characteristics of impinging air jets under a fixed pumping power condition

被引：35

作者：

Choo, Kyo Sung ^{[1
]}

Kim, Sung Jin ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Sch Mech Aerosp & Syst Engn, Taejon 305701, South Korea

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2010年 / 53卷 / 1-3期

关键词：

Impinging jet; Impingement; Heat transfer; THERMAL-CHARACTERISTICS; MASS-TRANSFER; FLUID-FLOW; EXCHANGER; SUBJECT; COST; SINK; GAS;

D O I：

10.1016/j.ijheatmasstransfer.2009.09.027

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Heat transfer characteristics of an impinging air jet are experimentally investigated under a fixed pumping power condition. The effects of dimensionless pumping power (P-pump(center dot) = 1.4 x 10(10)-6.7 x 10(12)) on the Nusselt number are considered. The focus is on cases where the nozzle-to-plate spacing is equal to or less than one nozzle diameter (H/d <= 1.0). The results show that the Nusselt number is independent of the nozzle-to-plate spacing under fixed pumping power conditions, while the Nusselt number increases with decreasing the nozzle-to-plate spacing under fixed flow rate conditions. Based on the experimental results, new correlations for the stagnation and average Nusselt numbers of the impinging jet are developed as a function of the pumping power alone. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.

引用

页码：320 / 326

页数：7

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