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Title: Separated-reattaching flow over a backstep with uniform normal mass bleed

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.

Authors:
; ;  [1]
  1. (National Tsing Hua Univ., Hsinchu (Taiwan, Province of China). Dept. of Power Mechanical Engineering)
Publication Date:
OSTI Identifier:
7113842
Resource Type:
Journal Article
Journal Name:
Journal of Fluids Engineering; (United States)
Additional Journal Information:
Journal Volume: 116:1; Journal ID: ISSN 0098-2202
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; TURBULENT FLOW; MASS TRANSFER; EXPERIMENTAL DATA; LASER DOPPLER ANEMOMETERS; MIXING; MOMENTUM TRANSFER; ANEMOMETERS; DATA; FLUID FLOW; INFORMATION; MEASURING INSTRUMENTS; NUMERICAL DATA; 420400* - Engineering- Heat Transfer & Fluid Flow

Citation Formats

Yang, J.T., Tsai, B.B., and Tsai, G.L.. Separated-reattaching flow over a backstep with uniform normal mass bleed. United States: N. p., 1994. Web. doi:10.1115/1.2910236.
Yang, J.T., Tsai, B.B., & Tsai, G.L.. Separated-reattaching flow over a backstep with uniform normal mass bleed. United States. doi:10.1115/1.2910236.
Yang, J.T., Tsai, B.B., and Tsai, G.L.. Tue . "Separated-reattaching flow over a backstep with uniform normal mass bleed". United States. doi:10.1115/1.2910236.
@article{osti_7113842,
title = {Separated-reattaching flow over a backstep with uniform normal mass bleed},
author = {Yang, J.T. and Tsai, B.B. and Tsai, G.L.},
abstractNote = {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.},
doi = {10.1115/1.2910236},
journal = {Journal of Fluids Engineering; (United States)},
issn = {0098-2202},
number = ,
volume = 116:1,
place = {United States},
year = {1994},
month = {3}
}