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Large scales in the developing mixing layer

Published online by Cambridge University Press:  11 April 2006

F. K. Browand  and
P. D. Weidman
F. K. Browand
Affiliation:
Division of Engineering and Applied Mechanics, University of Southern California, Los Angeles
P. D. Weidman
Affiliation:
Division of Engineering and Applied Mechanics, University of Southern California, Los Angeles
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Abstract

A new experimental technique is described for the study of the interactions between the large-scale vortical features in the two-dimensional mixing layer. Detector probes above and below the mixing layer are used to monitor the large-scale structure. Conditional sampling is performed in a moderate Reynolds number developing flow, by using phase and amplitude information from these detector probes. It is shown that significant Reynolds-stress production is associated with the pairing interaction in which two vortical structures combine to form a single, larger vortical structure.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 76 , Issue 1 , 14 July 1976 , pp. 127 - 144
Copyright
© 1976 Cambridge University Press

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References

Blackwelder, R. F. & Kaplan, R. E. 1976 J. Fluid Mech. 76, 89.
Brown, G. L. & Roshko, A. 1971 The effect of density differences on the turbulent mixing layer. Turbulent Shear Flows, AGARD Current Paper, no. 93, 23.1—23 12Google Scholar
Brown, G. L. & Roshko, A. 1974 On density effects in turbulent mixing layers. J. Fluid Mech. 64, 775.Google Scholar
Kim, H. T., Kline, S. J. & Reynolds, W. C. 1971 The production of turbulence near a smooth wall in a turbulent boundary layer. J. Fluid Mech. 50, 133.Google Scholar
Kline, S. J., Reynolds, W. C., Schraub, F. A. & Runstadler, P. W. 1967 The structure of turbulent boundary layers. J. Fluid Mech. 30, 741.Google Scholar
Liepmann, H. W. & Laufer, J. 1947 Investigation of free turbulent mixing. N.A.C.A. Tech. Note, no. 1257.
Stuart, J. T. 1967 On finite amplitude oscillations in laminar mixing layers. J. Fluid Mech. 29, 417.Google Scholar
Townsend, A. A. 1956 The Structure of Turbulent Shear Flow. Cambridge University Press.
Willmarth, W. W. & Lu, S. S. 1972 Structure of the Reynolds stress near the wall. J. Fluid Mech. 55, 65.Google Scholar
Winant, C. D. & Browand, F. K. 1974 Vortex pairing: the mechanism of turbulent mixing layer growth at moderate Reynolds number. J. Fluid Mech. 63, 237.Google Scholar