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Dynamic stall vortex convection: thoughts on compressibility effects

Published online by Cambridge University Press:  04 July 2016

R. B. Green  and
R. A. McD. Galbraith
R. B. Green
Affiliation:
Department of Aerospace Engineering, University of GlasgowGlasgow, UK
R. A. McD. Galbraith
Affiliation:
Department of Aerospace Engineering, University of GlasgowGlasgow, UK
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Abstract

This paper considers the convection of the dynamic stall vortex. A brief discussion of existing data is given. A comparison of two sets of data from different experimental facilities is then presented, and it is indicated that an important anomaly exists concerning the behaviour of the dynamic stall vortex. It emerges that freestream Mach number is the only parameter that can account for the observed differences. The importance of this parameter is then discussed in the context of vorticity flux from the aerofoil surface.

Type
Research Article
Information
The Aeronautical Journal , Volume 100 , Issue 999 , November 1996 , pp. 367 - 372
Copyright
Copyright © Royal Aeronautical Society 1996 

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