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RESEARCH PAPERS

Separated-Reattaching Flow Over a Backstep With Uniform Normal Mass Bleed (Data Bank Contribution)

[+] Author and Article Information
Jing-Tang Yang, Bor-Bin Tsai, Go-Long Tsai

Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043

J. Fluids Eng 116(1), 29-35 (Mar 01, 1994) (7 pages) doi:10.1115/1.2910236 History: Received August 10, 1992; Revised November 10, 1993; Online May 23, 2008

Abstract

The effect of normal mass bleed 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.

Copyright © 1994 by The American Society of Mechanical Engineers
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