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Effect of sandpaper roughness and stream turbulence on the laminar layer and its transition

Published online by Cambridge University Press:  04 July 2016

J. C. Gibbings  and
S. M. Al-Shukri
J. C. Gibbings
Affiliation:
Department of Mechanical EngineeringUniversity of Liverpool, UK
S. M. Al-Shukri
Affiliation:
Department of Mechanical EngineeringUniversity of Liverpool, UK
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Abstract

The work reported here was an experimental study of the combined influence of a sandpaper rough surface and a stream turbulence upon laminar and transitional boundary layers. Data correlations were obtained using the previously determined parameter of an equivalent Nikuradse size of roughness. These correlations are derived for the development of the laminar layer in thickness and profile shape factor, for the onset and the length of transition and for the distribution of intermittency through transition. Further fundamental differences in flow behaviour from those in a rough pipe have been found to add to those already reported.

Type
Research Article
Information
The Aeronautical Journal , Volume 101 , Issue 1001 , January 1997 , pp. 17 - 24
Copyright
Copyright © Royal Aeronautical Society 1997 

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