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Concerning Dynamic Stall

Published online by Cambridge University Press:  07 June 2016

F.T. Smith
F.T. Smith*
Affiliation:
Mathematics Department, Imperial College, London
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Summary

The unsteady breakdown or stall of streamlined flow near the rounded leading edge of an aerofoil, as the small angle of attack is raised above its critical stall value, is studied theoretically for large Reynolds number motion. The unsteady developments take place first over a relatively slow time scale but then the corresponding solution breaks down with a singularity, forcing a switch to a faster and more nonlinear process. The latter involves a very pronounced local bulge appearing in the flow displacement, accompanied by reversed flow at the aerofoil surface, and comparisons with experimental observations of dynamic stall are noted.

Information

Type
Research Article
Information
Aeronautical Quarterly , Volume 33 , Issue 4 , November 1982 , pp. 331 - 352
Copyright
Copyright © Royal Aeronautical Society. 1982

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References

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