Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-04T18:33:13.745Z Has data issue: false hasContentIssue false
  • English
  • Français

The crossed-beam correlation technique

Published online by Cambridge University Press:  28 March 2006

M. J. Fisher  and
F. R. Krause
M. J. Fisher
Affiliation:
IIT Research Institute, Chicago, Illinois
F. R. Krause
Affiliation:
National Aeronautics and Space Administration, George C. Marshall Space Flight Center, Huntsville, Alabama
Get access Rights & Permissions [Opens in a new window]

Abstract

This paper describes an experimental technique which allows estimates of local turbulent properties of a shear layer to be obtained without the necessity of inserting a probe into the flow field. The probe is replaced by two beams of radiation, which pass through the entire flow field in two mutually perpendicular directions. It is shown that, although each beam independently reflects only an integral of the flow properties along the entire path between the source and detector, the covariance between the two detected signals does yield local turbulent information.

To verify the validity of the technique, experimental results are presented for the shear layer of a subsonic jet and are shown to be in good agreement with published hot-wire data.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 28 , Issue 4 , 22 June 1967 , pp. 705 - 717
Copyright
© 1967 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

Davies, P. O. A. L. 1965 Turbulence structure in free shear layers. AIAA Paper no. 65–805.Google Scholar
Davies, P. O. A. L. & Fisher, M. J. 1963 Statistical properties of the turbulent velocity fluctuations in the mixing region of a round subsonic jet. University of Southampton. AASU Rept. no. 233.Google Scholar
Davies, P. O. A. L., Fisher, M. J. & Barratt, M. J. 1963 The characteristics of the turbulence in the mixing region of a round jet J. Fluid. Mech. 15, 337–67.Google Scholar