Flow visualization of a round jet impinging on cylindrical surfaces

被引：156
|
作者：
Cornaro, C [1 ]
Fleischer, AS [1 ]
Goldstein, RJ [1 ]
机构：
[1] Univ Minnesota, Inst Technol, Dept Mech Engn, Minneapolis, MN 55455 USA
来源：
EXPERIMENTAL THERMAL AND FLUID SCIENCE | 1999年 / 20卷 / 02期
基金：
美国国家科学基金会;
关键词：
jets; jet impingement; vortex; ring vortex; curved surface; flow visualization;
D O I：
10.1016/S0894-1777(99)00032-1
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Smoke wire flow visualization is used to investigate the behavior of a round jet issuing from a straight tube and impinging on concave and convex surfaces with high relative curvature values. Local velocity and turbulence intensity measurements of the free jet are correlated to the formation of the visualized ordered-flow structures. Visualization of the impinging jet shows the initiation and growth of ring vortices in the jet shear layer and their interaction with the cylindrical surfaces. Effects of relative curvature, nozzle diameter, nozzle-to-surface distance and Reynolds number on the jet flow structure are described. (C) 1999 Elsevier Science Inc. All rights reserved.
引用
收藏
页码：66 / 78
页数：13
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