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The linear inviscid secondary instability of longitudinal vortex structures in boundary layers

  • Philip Hall (a1) and Nicola J. Horseman (a2)

Abstract

The inviscid instability of a longitudinal vortex structure within a steady boundary layer is investigated. The instability has wavelength comparable with the boundary-layer thickness so that a quasi-parallel approach to the instability problem can be justified. The generalization of the Rayleigh equation to such a flow is obtained and solved for the case when the vortex structure is induced by curvature. Two distinct modes of instability are found; these modes correspond with experimental observations on the breakdown process for Görtler vortices.

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The linear inviscid secondary instability of longitudinal vortex structures in boundary layers

  • Philip Hall (a1) and Nicola J. Horseman (a2)

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