An investigation of the influence of nozzle aspect ratio on the velocity field of turbulent plane jet

Deo, R. C. and Mi, J. and Nathan, G. J. (2004) An investigation of the influence of nozzle aspect ratio on the velocity field of turbulent plane jet. In: 15th Australasian Fluid Mechanics Conference (AFMC 2004), 13-17 Dec 2004, Sydney, Australia.

Abstract

The effect of nozzle aspect ratio (w/H) (major axis to minor axis ratio) on the velocity field of a turbulent plane jet is investigated using a hot-wire anemometer. The aspect ratios investigated were in the range 10 < w/H < 60. The initial turbulence intensity proles exhibit a lower intensity at higher aspect ratios although this is probably caused by the nozzle whose proles change with aspect ratio. The length of the potential core and the normalized mean and rms velocities are all found to be a function of wH, in both the near and far field. Lower aspect ratio leads to faster decay of the mean velocity. Most investigations on aspect ratio effects have been on rectangular jets, hence this work is unique in its own right. Overall, the dependence of the current plane jet on aspect ratio is quite significant.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright is held by the University of Sydney.
Depositing User: Dr Ravinesh C Deo
Faculty / Department / School: Historic - Faculty of Sciences - Department of Maths and Computing
Date Deposited: 14 Apr 2010 10:58
Last Modified: 07 Nov 2013 06:09
Uncontrolled Keywords: plane jet; fluid mixing; initial conditions
Fields of Research (FOR2008): 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
09 Engineering > 0915 Interdisciplinary Engineering > 091508 Turbulent Flows
09 Engineering > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/7400

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