Characterization of turbulent jets from high-aspect-ratio rectangular nozzles

Mi, J. and Deo, R. C. and Nathan, G. J. (2005) Characterization of turbulent jets from high-aspect-ratio rectangular nozzles. Physics of Fluids, 17 (6). pp. 1-4. ISSN 1070-6631


Turbulent free jets issuing from rectangular slots with various high aspect ratios s15–120d are characterized. The centerline mean and rms velocities are measured using hot-wire anemometry over a downstream distance of up to 160 slot heights at a slot-height-based Reynolds number of
10 000. Experimental results suggest that a rectangular jet with sufficiently high aspect ratios (>= 15) may be distinguished between three flow zones: an initial quasi-plane-jet zone, a transition zone, and a final quasi-axisymmetric-jet zone. In the quasi-plane-jet zone, the turbulent velocity field is statistically similar, but not identical, to those of a plane jet.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Awaiting Author version, which may be deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Maths and Computing
Date Deposited: 15 Apr 2010 01:49
Last Modified: 07 Nov 2013 05:54
Uncontrolled Keywords: plane jet; nozzle aspect ratio; jet mixing; Reynolds number
Fields of Research : 09 Engineering > 0915 Interdisciplinary Engineering > 091508 Turbulent Flows
09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
09 Engineering > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1063/1.1928667

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