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Measurement of Skin Friction using a Rectangular Mouthed Preston Tube

Published online by Cambridge University Press:  04 July 2016

Alan Quarmby
Affiliation:
The University of Manchester Institute of Science & Technology
H. K. Das
Affiliation:
The University of Manchester Institute of Science & Technology

Summary

Measurements of skin friction were made with a set of rectangular mouthed pitot tubes of constant thickness ratio. The results gave a unique calibration between skin friction and pressure recorded by the tube when plotted after the method of Preston it the outside thickness is taken as the representative length. The calibration curve differs from that for circular Preston tubes when the effective centre of the pitot mouth lies within the sublayer.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1969 

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References

1. Preston, J. H. The Determination of Turbulent Skin Friction by Means of Pitot Tubes. JRAeS, Vol 58, p 109, February 1954.Google Scholar
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