Hostname: page-component-6766d58669-mzsfj Total loading time: 0 Render date: 2026-05-25T05:06:19.210Z Has data issue: false hasContentIssue false
  • English
  • Français

The flow development in a shielding jet

Published online by Cambridge University Press:  04 July 2016

J. N. Baker
J. N. Baker*
Affiliation:
Department of Mechanical Engineering., (Fluid Mechanics Division), University of Liverpool
Get access Rights & Permissions [Opens in a new window]

Summary

The flow from a high aspect ratio rectangular nozzle has been studied, so as to provide data to aid prediction of the effectiveness of this type of jet flow for acoustic shielding. Flow parameters investigated in both stationary and parallel, coflowing, airstreams, include axial centre-line velocity decay, jet width growth and velocity profile similarity. The existence of significant velocity peaks towards the edge of the jet in the plane of the major axis was observed, together with an unexpected interaction on this jet flow by an adjacent circular and subsonic jet.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 88 , Issue 871 , January 1984 , pp. 435 - 443
Copyright
Copyright © Royal Aeronautical Society 1984 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

Footnotes

*

Now at Thornton Research Centre, Chester, England

References

1. Cowan, S. J. and Crouch, R. W. Transmission of sound through a two-dimensional shielding jet. Paper 73-1002, AIAA Aero-Acoustics Conference, Seattle, Washington, 1973.Google Scholar
2. Van Der Hegge Zijnen, B. G. Measurements of the velocity distribution in a plane turbulent jet of air. Applied Scientific Research, 1957-58. A7.Google Scholar
3. Bradbury, L. J. S. and Riley, J. The spread of a turbulent plane jet issuing into a parallel moving airstream. Journal of Fluid Mechanics, 1967. 27.Google Scholar
4. Bradbury, L. J. S. Simple expressions for the spread of turbulent jets. Aeronautical Quarterly, May 1967.Google Scholar
5. Schlichting, H. Boundary layer theory. McGraw-Hill, 1979. Chapter XXIV, 4th English Edition.Google Scholar
6. Sforza, , Steiger, and Trentacoste, . Studies on three-dimensional viscous jets. AIAA Journal, May 1966.Google Scholar
7. Sforza, and Trentacoste, . Further experimental results for three-dimensional viscous jets. AIAA Journal, May 1967.Google Scholar
8. Kurn, A. G. Observations of the flow from a rectangular nozzle. RAE TR 74073, June 1974.Google Scholar
9. Reichardt, H. Gesetzmassigkeiten der Freien turbulenz. VDI-Forschungsheft 414 (1942), 2nd Edition, 1951. As quoted by Schlichting (5).Google Scholar
10. Gibbings, J. C. The combination of a contraction with a supersonic nozzle for a wind tunnel. Ingenieur-Archiv, 35. Band 4. Heft, 1966. S.269-275.Google Scholar
11. Davies, M. G. and Oldfield, D. E. S. Tones from a choked axisymmetric jet. Acustica. 1962, 12,No.4, Pt.l,257, Pt. 2, 267.Google Scholar
12. Davies, M. G. A note on the radiaton and cell pattern of choked jets. Journal of Sound and Vibration, 1964, 1, Pt 3, 298.Google Scholar
13. Kotsovinos, N. E. A note on the spreading rate and virtual origin of a plane turbulent jet. Journal of Fluid Mechanics, 1976, 77 Google Scholar
14. Bradshaw, P. Effect of external disturbances on the spreading rate of a plane turbulent jet. Journal of Fluid Mechanics, 1977, 80.Google Scholar
15. Gibbings, J. C. The choked jet flowing into a stationary atmosphere. The Aeronautical Journal of the Royal Aeronautical Society, August 1975, 79, No. 776, 368.Google Scholar