Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-13T01:30:44.685Z Has data issue: false hasContentIssue false

Experiments on jet flows and jet noise far-field spectra and directivity patterns

Published online by Cambridge University Press:  28 March 2006

Erik Mollo-Christensen
Affiliation:
Massachusetts Institute of Technology, Cambridge, Mass.
Marc A. Kolpin
Affiliation:
Massachusetts Institute of Technology, Cambridge, Mass.
John R. Martuccelli
Affiliation:
Massachusetts Institute of Technology, Cambridge, Mass.

Abstract

The results of measurements of far-field sound emitted from jets are reported. The narrow-band power spectral density of the sound in the far field was measured for three jet diameters, three Mach numbers, and five angular positions. The intensity distribution of mean-square pressure fluctuation in the far field in several wide frequency ranges were also measured. The similarity relations found from the experiments are reported.

Type
Research Article
Copyright
© 1964 Cambridge University Press

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.)

References

Fitzpatrick, H. M. & Lee, R. 1952 Measurements of noise radiated by subsonic air jets. David Taylor Model Basin, Rep. no. 83, Regular Ser.Google Scholar
Franken, P. A. 1958 Review of information on jet noise. Noise Control, 4, 816.Google Scholar
Gerrard, J. H. 1956 An investigation of the noise produced by a subsonic air jet. J. Aero. Sci. 23, 85566.Google Scholar
Kolpin, M. A. 1962 Flow in the mixing region of a jet. Mass. Inst. Tech. Aero-Sci. Res. Lab. Tech. Rep. no. 92–3.Google Scholar
Lassiter, L. W. & Hubbard, H. H. 1952 Experimental studies of noise from subsonic jets in still air. Nat. Adv. Comm. Aero., Wash., Tech. Note, no. 2757.Google Scholar
Lighthill, M. J. 1954 On sound generated aerodynamically. II. Proc. Roy. Soc. A, 222, 132.Google Scholar
Lighthill, M. J. 1961 Sound generated aerodynamically; the Bakerian Lecture. Royal Aircraft Establishment Tech. Memo. Dir. 8.Google Scholar
Merle, M. 1957 Nouvelles recherches sur la structure des jets à grande vitesse et les fréquences ultrasonores emises. J. Phys. Radium, 18, 66595.Google Scholar
Mollo-Christensen, E. & Narasimha, R. 1960 Sound emission from jets of high subsonic velocities. J. Fluid Mech. 8, 4960.Google Scholar