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An investigation of dynamic stall through the application of leading edge roughness

Published online by Cambridge University Press:  04 July 2016

R.B. Green  and
R.A.McD. Galbraith
R.B. Green
Affiliation:
Department of Aerospace EngineeringUniversity of Glasgow
R.A.McD. Galbraith
Affiliation:
Department of Aerospace EngineeringUniversity of Glasgow
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Abstract

The dynamic stall characteristics of a NACA 0015 performing ramp-up motions are considered. Pressure data show the development and convection of structures at the leading and trailing edges, which indicate differing degrees of what are described as leading edge and trailing edge stall mechanisms. When a transition strip is placed at the leading edge, the characteristics of leading edge stall predominate, and the growth of the structure at the trailing edge is suppressed. In addition the stall vortex convection speed is observed to alter significantly, which is interpreted as a change in the vortex origin, size, strength and trajectory.

Type
Technical Note
Information
The Aeronautical Journal , Volume 98 , Issue 971 , January 1994 , pp. 17 - 19
Copyright
Copyright © Royal Aeronautical Society 1994 

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