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The fluctuating pressure field in a supersonic turbulent boundary layer

Published online by Cambridge University Press:  28 March 2006

A. L. Kistler  and
W. S. Chen
A. L. Kistler
Affiliation:
Yale University
W. S. Chen
Affiliation:
Now at R.C. Sparkplug Company, El Segundo, California.
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Abstract

The pressure fluctuations caused by a turbulent boundary layer on a solid surface have been obtained over the Mach number range 1·33-5·00. The root-mean-square values of the pressures are found to be proportional to the local skin friction. The proportionality constant is not a strong function of Mach number in the range investigated but is larger than the previously obtained subsonic values by about a factor of 2. The space-time correlations with the space separation in the direction of the mean flow are characterized by a convection speed Uc, and this speed falls from 0·8 of the free-steam velocity at M = 1·33 to 0·6 at M = 5. The peak value of the correlation coefficient falls to one-half for a spatial separation of the measuring points of about two-tenths of the boundary layer thickness.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 16 , Issue 1 , May 1963 , pp. 41 - 64
Copyright
© 1963 Cambridge University Press

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