Hostname: page-component-6bb9c88b65-2jdt9 Total loading time: 0 Render date: 2025-07-23T01:23:23.161Z Has data issue: false hasContentIssue false
  • English
  • Français

On the breakdown of the wave packet trailing a turbulent spot in a laminar boundary layer

Published online by Cambridge University Press:  21 April 2006

A. Glezer ,
Y. Katz  and
I. Wygnanski
A. Glezer
Affiliation:
Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ 85721, USA
Y. Katz
Affiliation:
Department of Fluid Mechanics and Heat Transfer, Tel-Aviv University, Tel-Aviv, Israel
I. Wygnanski
Affiliation:
Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ 85721, USA Department of Fluid Mechanics and Heat Transfer, Tel-Aviv University, Tel-Aviv, Israel
Get access Rights & Permissions [Opens in a new window]

Abstract

The evolution of two oblique wave packets trailing, a transitional spot in a laminar boundary layer was investigated in order to determine the extent of the interaction between the packets and the spot. The experimental investigation, carried out on two slightly different laminar boundary layers characterized by Falkner-Skan constants of β = 0 and β = 0.2, revealed that very small pressure gradients can have significant effects on the stability of the laminar boundary layer and the rate at which it is contaminated by a turbulent spot. Some simple, novel statistical procedures for treating the data were developed and were used to accentuate the understanding of the physical processes governing transition to turbulence.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 198 , January 1989 , pp. 1 - 26
Copyright
1989 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.)

Article purchase

Temporarily unavailable

References

Antonia, R. A., Chambers, A. J., Sokolov, M. & Van Atta, C. W.1981 J. Fluid Mech. 108, 317.
Cantwell, B., Coles, D. & Dimotakis, P., 1978 J. Fluid Mech. 87, 641.
Chambers, F. W. & Thomas, A. S. W.1983 Phys. Fluids 26, 1160.
Coles, D. & Barker, S. J., 1975 In Turbulent Mixing in Nonreacting and Reacting Flows (ed. S. N. B. Murthy), p. 285. Plenum.
Corrsin, S. & Kistler, A. L., 1955 Free stream boundaries of turbulent flows. NACA Rep. 161244.Google Scholar
Gad-El-Hak, M., Blackwelder, R. F. & Riley, J. J., 1981 J. Fluid Mech. 110, 73.
Gaster, M.: 1975 Proc. R. Soc. Lond. A A347, 271.
Gaster, M. & Grant, I., 1975 Proc. R. Soc. Lond. A 347, 253.
Glezer, A. & Coles, D. E., 1988 An experimental study of a turbulent vortex ring. J. Fluid Mech. (submitted).Google Scholar
Klebanoff, P. S., Tidstrom, K. D. & Sargent, L. M., 1962 J. Fluid Mech. 12, 1.
Kovasznay, L. S. G., Komoda, H. & Vasudeva, B. R., 1962 In Proc. Heat Transfer and Fluid Mechanics Institute, p. 1. Stanford University Press.
Matsui, T.: 1980 In Laminar-Turbulent Transition (ed. R. Eppler & H. Fasel), p. 288. Springer.
Morkovin, M. V.: 1969 Critical evaluation of transition from laminar to turbulent shear layers with emphasis on hypersonically travelling bodies. Flight Dynamic Lab. Rep. AFFDL-TR-68 149.Google Scholar
Perry, A. E., Lim, T. T. & Teh, E. W., 1981 J. Fluid Mech. 104, 387.
Schubauer, G. B. & Klebanoff, P. S.1956 Contributions on the mechanics of boundary layer transition. NACA Rep. 1289.Google Scholar
Schubauer, G. B. & Skramstad, H. K.1948 Laminar boundary layer oscillations on a flat plate. NACA Rep. 909.Google Scholar
Van Atta, C. W. & Helland, K. N.1980 J. Fluid Mech. 100, 243.
Wazzan, A. R., Okamura, T. T. & Smith, A. M. O.1968 Spatial and temporal stability charts for the Falkner-Skan boundary layer profiles. DAC 67086. Sept. 1. 1968, McDonnell Douglas Corp.
Wygnanski, I. J. & Champagne, F. H., 1973 J. Fluid Mech. 59, 281.
Wygnanski, I. & Fiedler, H., 1970 J. Fluid Mech. 41, 327.
Wygnanski, I. J., Haritonidis, J. H. & Kaplan, R. E., 1979 J. Fluid Mech. 92, 505.
Wygnanski, I. J., Sokolov, M. & Friedman, D., 1975 J. Fluid Mech. 69, 283.
Wygnanski, I. J., Zilberman, M. & Haritonidis, J. H., 1982 J. Fluid Mech. 123, 69.
Zilberman, M.: 1981 On the interaction of transitional spots and generation of a synthetic turbulent boundary layer. Ph.D. thesis. Tel-Aviv University.
Zilberman, M., Wygnanski, I. J. & Kaplan, R. E., 1976 Phys. Fluids Suppl. 20, S258.