Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-09T15:22:21.371Z Has data issue: false hasContentIssue false
  • English
  • Français

Turbulent front structure of an axisymmetric compressible wake

Published online by Cambridge University Press:  28 March 2006

Anthony Demetriades
Anthony Demetriades
Affiliation:
Philco-Ford Corporation, Newport Beach, California
Get access Rights & Permissions [Opens in a new window]

Abstract

Intermittency measurements have been performed within the first 100 virtual diameters of an axisymmetric compressible wake. The primary measurements, performed with the hot-wire anemometer, concerned the intermittency factor and the frequency of ‘zero crossings’. The intermittent flow covered most of the wake profile but for a narrow region about the axis, and was found to be normally distributed around the average front position. The latter, along with the extent of the front standard deviation, was found to agree numerically with expectations based on low speed wakes and to grow as the 1/3 power of axial distance. A weak periodicity of the front was detected at a wavelength about nine times greater than the longitudinal scale of turbulent velocity fluctuations. This periodicity affects the turbulent spectra.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 34 , Issue 3 , 2 December 1968 , pp. 465 - 480
Copyright
© 1968 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

Behrens, W. 1963 GALCIT Hypersonic Project IM-15, Calif. Inst. of Techn., Pasadena, Calif.
Bradbury, L. J. S. 1965 Aero. Quart. 15, 281.
Corrsin, S. & Kistler, A. L. 1953 NACA TR 1244, Washington, D.C.
Corrsin, S. & Uberoi, M. S. 1950 NACA TR 998, Washington, D.C.
Gartshore, I. S. 1966 J. Fluid Mech. 24, 89.
Gibson, C. H., Lin, S. C. & Chen, C. C. 1967 AIAA Paper, no. 67–20. New York, N.Y.
Grant, H. L. 1958 J. Fluid Mech. 4, 149.
Hwang, N. H. C. & Baldwin, L. V. 1966 Trans. Am. Soc. Mech. Engr. Ser. D, J. Basic Engr. 88, 261.
Levensteins, Z. L. & Krumins, M. V. 1967 AIAA J. 5, 1596.
Reichardt, H. & Ermshaus, R. 1962 Int. J. Heat Mass Tr. 5, 251.
Schapker, R. L. 1966 AIAA J. 4, 1979.
Townsend, A. A. 1956 The Structure of Turbulent Shear Flow. Cambridge University Press.
Townsend, A. A. 1966 J. Fluid Mech. 26, 689.