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Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/8867

Title: Transition mechanisms within the boundary-layer flow over slender vs. broad rotating cones
Authors: Hussain, Z.
Garrett, Stephen J.
Stephen, S.O.
Issue Date: Jun-2010
Publisher: American Institute of Aeronautics and Astronautics (AIAA)
Citation: Proceedings of the 40th Fluid Dynamics Conference and Exhibit, 28 June - 1 July 2010, Chicago, Illinois, Paper AIAA-2010-4285.
Abstract: We describe progress in classifying the convective instability characteristics of the boundarylayer flow over the family of rotating cones. Existing experimental and theoretical studies are discussed which lead to the clear hypothesis of a centrifugal instability mode that dominates over slender cones and manifests as Görtler-type spiral vortices. Although a formulation consistent with the classic rotating-disk problem has been successful in predicting the stability characteristics over broad cones, it is unable to identify such a centrifugal mode as the half-angle is reduced. An alternative formulation is introduced and an asymptotic analysis summarized which identifies such a centrifugal mode.
Links: http://www.aiaa.org/content.cfm?pageid=2
http://hdl.handle.net/2381/8867
Type: Conference paper
Description: This paper was published as Proceedings of the 40th Fluid Dynamics Conference and Exhibit, 28 June - 1 July 2010, Chicago, Illinois, Paper AIAA-2010-4285. It is also available from http://www.aiaa.org/content.cfm?pageid=2. This paper appears here with the permission of the American Institute of Aeronautics and Astronautics, Inc.
Appears in Collections:Conference Papers & Presentations, Dept. of Mathematics

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