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RESEARCH PAPERS

Turbulence Structure of Plane Surface-Jets in a Weak Coflowing Stream for Different Initial Wake Conditions

[+] Author and Article Information
R. Martinuzzi

Department of Mechanical and Material Engineering, The University of Western Ontario, London, Ontario, N6A 5B9

A. M. Zaghloul, W. Al-Qaraguli, R. E. Baddour

Department of Civil and Environmental Engineering, The University of Western Ontario, London, Ontario, N6A 5B9

J. Fluids Eng 120(1), 76-82 (Mar 01, 1998) (7 pages) doi:10.1115/1.2819666 History: Received February 20, 1996; Revised October 01, 1997; Online December 04, 2007

Abstract

Plane turbulent surface-jets, in the presence of a weak coflowing ambient current, were experimentally investigated using a single-component Laser Doppler Velocimeter. This study is concerned with the influence on the turbulent mixing characteristics of the relative speed ratio, U′a , and the wake generated behind the plate separating the jet from the ambient stream at the exit. Data were analyzed for similarity characteristics, surface speed decay, jet growth rate, jet momentum flux, jet volume flux, and turbulence decay. An integral analysis of the governing equations was also conducted to examine the turbulent entrainment properties of the surface jets.

Copyright © 1998 by The American Society of Mechanical Engineers
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