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Quantitative schlieren measurements in a supersonic turbulent jet

Published online by Cambridge University Press:  29 March 2006

M. R. Davis
M. R. Davis
Affiliation:
School of Mechanical and Industrial Engineering, The University of New South Wales, Kensington, Australia
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Abstract

This paper describes the results of a series of measurements made using a single beam schlieren system to investigate the density fluctuations present in the initial region of a supersonic axisymmetric turbulent jet with a Mach number of 1-82 in the flow a t the nozzle exit. A preheater was used to reduce the difference between the jet static temperature and that of the surrounding air to a relatively low level. The results show that significant density fluctuations are present in the potential core of the jet and that the distribution of fluctuating intensity across the shear layer differs from that obtained with a subsonic jet without preheating.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 51 , Issue 3 , 8 February 1972 , pp. 435 - 447
Copyright
© 1972 Cambridge University Press

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References

Becker H. A., Hottel, H. C. & Williams G. C.1967 On the light scatter technique for the study of turbulence and mixing. J. Fluid Mech., 30, 259–284.Google Scholar
Davis M. R.1971 Measurements in a subsonic turbulent jet using a quantitative schlieren technique. J. Fluid Mech., 46, 631–656.Google Scholar
Fisher, M. J. & Johnston K. D.1970 Turbulence measurements in supersonic, shock free jets by the optical crossed-beam method. N.A.S.A. Tech. Note, D-5206.
Fisher, M. J. & Krause F. R.1967 The crossed-beam correlation technique. J. Fluid Mech., 28, 705–717.Google Scholar
Funk, B. H. & Johnston K. D.1970 Laser schlieren crossed-beam measurements in a supersonic jet shear layer. A.I.A.A. J., 8, 2074–5.Google Scholar
Quigg, G. C. & Catchpole B. G.1956 The calibration of five axisymmetrical supersonic nozzles covering the Mach number range 1.2 to 3.0. Aero. Res. Lab., Melbourne, ARL ME-158.
Roe G. C.1970 An optical study of turbulence. J. Fluid Mech., 43, 607–35.Google Scholar
Wilson, L. N. & Damkevala R. J.1970 Statistical properties of turbulent density fluctuations. J. Fluid Mech., 43, 291–303.Google Scholar