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Studies on twin elliptic jets

Published online by Cambridge University Press:  04 July 2016

S. Elangovan ,
A. Solaiappan  and
E. Rathakrishnan
S. Elangovan
Affiliation:
Department of Aerospace EngineeringIndian Institute of Technology, Kanpur, India
A. Solaiappan
Affiliation:
Department of Aerospace EngineeringIndian Institute of Technology, Kanpur, India
E. Rathakrishnan
Affiliation:
Department of Aerospace EngineeringIndian Institute of Technology, Kanpur, India
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Extract

Non circular jets are emerging as a new class of passive control mechanism of jet flow. Jets issuing from non circular nozzles, rectangular, square, triangular, elliptic etc, are found to entrain several times more ambient fluid than equivalent axisymmetric nozzles. Non circular jets are generally referred to as non axisymmetric or three-dimensional jets. The increased entrainment of these asymmetric jets, particularly that of elliptic jets, has attracted the attention of many researchers. As asymmetric jets, multiple jets of different geometric configurations have also been proved to be effective in passive control of the jet flowfield. Multiple asymmetric jets may be expected to emerge as an effective method of passively controlling the jets. Many researchers have studied the flow field of single three dimensional jets and multiple circular or plane jets. But studies on multiple threedimensional jets are very limited. Pani and Dash studied the flowfield of three-dimensional single and multiple free jets. Their observed mean velocity distribution results were in agreement with the theoretical profiles.

Type
Technical Note
Information
The Aeronautical Journal , Volume 100 , Issue 997 , September 1996 , pp. 295 - 296
Copyright
Copyright © Royal Aeronautical Society 1996 

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Footnotes

†

Formerly Gurunanak Dev Engineering College, Bidar, Karnataka, India.

References

1. Schadow, K.C., Wilson, K.J., Lee, M.J. and Gutmark, E. Enhancement of mixing in ducted rockets with elliptic gas-generator nozzles, AIAA paper, 84-1260, 1984.Google Scholar
2. Husain, H.S. and Hussain, A.K.M.F. Controlled excitation of elliptic jet, Phys Fluids, 1983, 26, pp 2763—2765.Google Scholar
3. Gutmark, E. and Ho, CM. Near field pressure fluctuations of an elliptical jet, AIAA J, 1985, 23, pp 354—358.Google Scholar
4. Ho, CM. and Gutmark, E. Vortex induction and mass entrainment in a small-aspect-ratio elliptic jet, J Fluid Mech, 1987, 179, pp 383— 405.Google Scholar
5. Hussain, F. and Husain, H.S. Elliptic jets. Part 1: Characteristics of unexcited and exited jets, J Fluid Mech, 1989, 208, pp 257—320.Google Scholar
6. Husain, H.S. and Hussain, F. Elliptic jets. Part 2: Dynamics of coherent structures: pairing, J Fluid Mech, 1991, 233, pp 439—482.Google Scholar
7. Quinn, W.R. On mixing in an elliptic turbulent free jet, Phys Fluids, 1989, 1, pp 1716—1722.Google Scholar
8. Moustafa, G.H. and Rathakrishnan, E. Studies on the flow field of multijet with square configuration, AIAA J, 1993, 31, (7), pp 1189—1190.Google Scholar
9. Pani, B. and Dash, R. Three-dimensional single and multiple free jets, J Hydraulic Eng, 1983, 109, (2), pp 254—269.Google Scholar
10. Chue, S.H. Pressure probes for fluid measurements, Prog Aero Sci, 1975, 16, pp 147—223.Google Scholar