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Yaw Probe used as Preston Tube

Published online by Cambridge University Press:  04 July 2016

N. Rajaratnam  and
D. Muralidhar
N. Rajaratnam
Affiliation:
Department of Civil Engineering, University of Alberta, Edmonton, Canada
D. Muralidhar
Affiliation:
Department of Civil Engineering, University of Alberta, Edmonton, Canada
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Summary

In this note it is suggested that the three-tube yaw probe be placed on the boundary and used as a Preston tube to measure the boundary shear stress when both its magnitude and direction are unknown. The calibration results necessary for this method are also presented herein.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 72 , Issue 696 , December 1968 , pp. 1059 - 1060
Copyright
Copyright © Royal Aeronautical Society 1968 

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References

1. Preston, J. H. The determination of turbulent skin friction by means of nitot tubes, Journal of the Royal Aeronautical Society, pp 109–121, Vol. 58, February 1954.Google Scholar
2. Hornung, H. G. and Joubert, P. N. The mean velocity profile in three dimensional turbulent boundary layers, Journal of Fluid Mech, Vol 15, 1963.Google Scholar
3. Sigalla, A. Experiments with pitot tubes used for skin friction measurement, The British Iron and Steel Research Association Rept., March 1958.Google Scholar
4. Rajaratnam, N. and Muralidhar, D. Yaw and pitch probes, Tech Report, Dept of Civil Engg, Univ of Alberta, Edmonton, Canada, Sept 1967.Google Scholar
5. Patel, V. C. Calibration of the Preston tube and limitations on its use in pressure gradients, Journal of Fluid Mech, Vol 23, 1965.Google Scholar