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Plane turbulent buoyant jets. Part 1. Integral properties

Kotsovinos, Nikolas E. and List, E. John (1977) Plane turbulent buoyant jets. Part 1. Integral properties. Journal of Fluid Mechanics, 81 (1). pp. 25-44. ISSN 0022-1120. doi:10.1017/S002211207700189X.

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An integral technique suggested for the analysis of turbulent jets by Corrsin & Uberoi (1950) and Morton, Taylor & Turner (1956) is re-examined in an attempt to improve the description of the entrainment. It is determined that the hypothesis of Priestley & Ball (1955), that the entrainment coefficient is a linear function of the jet Richardson number, is reasonable, and that two empirically determined plume parameters are sufficient to describe the transition of buoyant jets to plumes. The results of a series of experiments in which both time-averaged velocity and time-averaged temperature profiles were recorded in a substantial number of plane turbulent buoyant jets of varying initial Richardson numbers are used to verify the basic ideas. In addition, measurements of the mean tracer flux in a series of buoyant jets indicate that as much as 40% of the transport in plumes is by the turbulent flux.

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Additional Information:Copyright © 1977 Cambridge University Press. Reprinted with permission. (Received 28 January 1976 and in revised form 9 June 1976) The authors gratefully acknowledge the support of this work by the U.S. National Science Foundation, more recently through Grant no. ENG75-02985 and earlier by Grant no. GK-35774X.
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Deposited On:04 Oct 2006
Last Modified:08 Nov 2021 20:23

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