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An experimental investigation of an axisymmetric jet in a co-flowing air stream

Published online by Cambridge University Press:  29 March 2006

R. A. Antonia  and
R. W. Bilger
R. A. Antonia
Affiliation:
Department of Mechanical Engineering, University of Sydney
R. W. Bilger
Affiliation:
Department of Mechanical Engineering, University of Sydney
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Abstract

An experimental investigation of the flow development of an axisymmetric jet exhausting into a moving air stream is made for two values of the ratio of jet velocity to external air velocity. The u-component turbulence intensity and Reynolds shear stress measurements together with the dissipation length scales inferred from measured u-component spectra suggest that the turbulence similarity assumptions are incorrect for the present flow situation. A discussion of the turbulence structure of the flow indicates that self-preservation does not apply for this situation and that the flow far downstream depends strongly on the complete past history.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 61 , Issue 4 , 18 December 1973 , pp. 805 - 822
Copyright
© 1973 Cambridge University Press

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