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Further study of high speed single free jets

Published online by Cambridge University Press:  04 July 2016

G. H. Moustafa
G. H. Moustafa*
Affiliation:
Department of Power Mechanical Engineering, College of Engineering and Technology Menoufia University, Shbien El-Kom Egypt
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Abstract

Experiments to study the behaviour of a compressible free jet issuing from an axisymmetric convergent nozzle are reported. Detailed measurements of the mean flow field for subsonic, sonic and underexpanded sonic jets was made within the pressure ratio range of 1.13 to 4. The results show that the spread and decay rates of the jet vary significantly with pressure ratio. The results further indicate the radial velocity/total pressure collapse within the two-dimensional shear layer data. The underexpanded jet propagates to a greater distance downstream than the low speed jets; this leads to enhancement of the far field mixing.

Type
Research Article
Information
The Aeronautical Journal , Volume 97 , Issue 965 , May 1993 , pp. 171 - 176
Copyright
Copyright © Royal Aeronautical Society 1993 

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References

1. Glass, D.R. Effect of acoustic feedback on the spread and decay of supersonic jets, AIAA J, 1968, 6, pp 1890–1897.Google Scholar
2. Krothapalli, A., Mcdaniel, J. and Baganoff, D. Effect of slotting on the noise of an axisymmetric supersonic jet, AIAA J, December 1990, 28, pp 2136–2138.Google Scholar
3. Miller, P. and Seel, M.W. The application of high pressure ejectors to reaction control systems, Aeronaut J, November 1991, 95, (949), pp 297–312.Google Scholar
4. Gutmark, E., Schadow, K.C. and Bicker, C.J. Near acoustic field and shock structure of rectangular supersonic jets, AIAA J, July 1990, 28, pp 1163–1170.Google Scholar
5. Quinn, W.R. On mixing in an elliptic turbulent free jets, Phys Fluid, October 1989, Al(10), pp 1716–1722.Google Scholar
6. Quinn, W.R. Mean flow and turbulence measurements in a triangular turbulent free jet, Intl J Heat Fluid Flow, September 1990, 11, pp 220–224.Google Scholar
7. Moustafa, G. H. Experimental and Numerical Investigations of Subsonic, Sonic and Supersonic Multiple Free Jets, PhD Thesis, Indian Institute of Technology Kanpur, India, August 1992.Google Scholar
8. Gutmark, E., Schadow, K.C. and Bicker, C.J. Mode switching in supersonic circular jets, Phys Fluids, 1989, Al(5), pp 869–878.Google Scholar
9. Norum, T.D. Supersonic rectangular jet impingement noise experiments, AIAA J, July 1991, 29, pp 1051–1057.Google Scholar
10. Namer, I. and Otugen, M.V. Velocity measurements in a plane turbulent air jet at moderate Reynolds numbers, Expt Fluid, 1988, 6, pp 387–399.Google Scholar
11. Halleen, R.M. A literature review on subsonic free turbulent shear flow, AFOSR, TN-5444, 1964.Google Scholar
12. Lau, J.C., Morris, P.J. and Fisher, M.J. Measurements in subsonic and supersonic free jets using a laser velocimeter, J Fluid Mech, 1979, 93, pp 1–27.Google Scholar
13. Koplin, M.A. Mixing in turbulent axially symmetric free jets, J Spacecr, 1964, pp 403–408.Google Scholar
14. Gutmark, E., Bowman, H.L. and Schadow, K.C. Flow and acoustic features of a supersonic tapered nozzle, Expts Fluid, 1992, 13, pp 49–55.Google Scholar