SEPARATED-REATTACHING FLOW OVER A BACKSTEP WITH UNIFORM NORMAL MASS BLEED

被引:32
作者
YANG, JT
TSAI, BB
TSAI, GL
机构
[1] Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu
来源
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 1994年 / 116卷 / 01期
关键词
D O I
10.1115/1.2910236
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The effect of normal mass bledd into the separated-reattaching flow behind a backward-facing step has been experimentally investigated. Results of LDA measurements showed that normal mass bleed suppressed the reverse horizontal velocity, the reverse flow rate, turbulence intensity, and Reynolds shear stress within the whole recirculating zone. An analysis of the distributions of vertical velocity and turbulence intensity indicates that the interaction between the injected fluid and the main stream began at 0.4 step height and became significant after 0.8 step height behind the backstep.
引用
收藏
页码:29 / 35
页数:7
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