Nonlinear flow and heat transfer dynamics of a slot jet impinging on a slightly curved concave surface

被引：24

作者：

Eren, H

Celik, N

Yesilata, B ^{[1
]}

机构：

[1] Harran Univ, Dept Mech Engn, TR-63300 Sanliurfa, Turkey

[2] Firat Univ, Dept Engn Mech, TR-23279 Elazig, Turkey

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2006年 / 33卷 / 03期

关键词：

impinging jet; heat transfer; flow dynamics; concave surface; rectangular slot;

D O I：

10.1016/j.icheatmasstransfer.2005.09.012

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The nonlinear flow and heat transfer characteristics for a slotjet impinging on a slightly curved concave surface are experimentally studied here. The effects of jet Reynolds number on the jet velocity distribution and circumferential Nusselt numbers are examined. The nozzle geometry is a rectangular slot and the dimensionless nozzle-to-surface distance equals to L* = 8. The constant heat fluxes are accordingly applied to the surface to obtain an impingement cooling by the air jet at ambient temperature. The measurements are made for the jet Reynolds numbers of 8617, 13350 and 15415. New correlations for local, stagnation point, and average Nusselt numbers as a function of jet Reynolds number and dimensionless circumferential distance are reported. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：364 / 371

页数：8

共 23 条

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Chan TL, 2003, EXP FLUIDS, V34, P140, DOI [10.1007/s00348-002-0546-0, 10.1007/S00348-002-0546-0]

[2] Heat transfer characteristics of a slot jet impinging on a semi-circular convex surface [J].