Absolute instabilities of a finite length vortex street with external axial velocities

Tak Wai Chiu; Aaron Hanson Berney

Tak Wai Chiu University of Exeter
Aaron Hanson Berney University of Exeter

Abstract

This paper presents a numerical algorithm for the study of the absolute instability of a vortex street with external axial velocities and finite length vortices. The aim is that this will be of relevance to the study of the flow over slender bodies at yaw. The algorithm is based on the vortex dynamics momentum equation. Special core treatments have been implemented to tackle the problem of infinite self-induced velocity. A small perturbation method is then used to formulate the eigenvalue problem.

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References

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