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On short-scale inviscid instabilities in flow past surface-mounted obstacles and other non-parallel motions

Published online by Cambridge University Press:  04 July 2016

F.T. Smith
Affiliation:
Department of Mathematics, University College , London
R. J. Bodonyi
Affiliation:
Department of Mathematical Sci, IUPUI, Indianapolis, USA

Summary

A theoretical investigation of short-scale inviscid instability in boundary-layer flow past an obstacle on a surface is described, with the application to trip-wire transition and wall roughness effects in mind. An analytical model and computational results show that the occurrence of an inflexion point in a local velocity profile is necessary but not sufficient for the instability to arise.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1985 

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