Journal of Fluid Mechanics



On the organized motion of a turbulent plane jet


R. A.  Antonia a1, L. W. B.  Browne a1, S.  Rajagopalan a1 and A. J.  Chambers a1
a1 Department of Mechanical Engineering, University of Newcastle, N.S.W. 2308, Australia

Article author query
antonia ra   [Google Scholar] 
browne lw   [Google Scholar] 
rajagopalan s   [Google Scholar] 
chambers aj   [Google Scholar] 
 

Abstract

Measurements of space–time correlations of longitudinal and normal velocity fluctuations and of temperature fluctuations support the existence of counter-rotating spanwise structures appearing alternately on opposite sides of the jet centreline in the self-preserving region of the flow. The frequency of these structures closely satisfies self-preservation. The asymmetric arrangement of the structures is first observed downstream of the position where the jet mixing layers nominally merge but upstream of the onset of self-preservation. Closer to the jet exit, the space–time correlations indicate the existence of spanwise structures that are symmetrical about the centreline.

(Published Online April 20 2006)
(Received August 9 1982)
(Revised April 19 1983)



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