Boundary-layer transition on broad cones rotating in an imposed axial flow

Stephen Garrett, Z. Hussain, S. O. Stephen

Research output: Chapter in Book/Published conference outputConference publication


We present stability analyses for the boundary-layer flow over broad cones (half-angle ψ > 40°) rotating in imposed axial flows. Preliminary convective instability analyses are presented that are based on the Orr-Sommerfeld equation for a variety of axial-flow speeds. The results are discussed in terms of the limited existing experimental data and previous stability analyses on related bodies. The results of an absolute instability analysis are also presented which are intended to further those by Garrett & Peake21 through the use of a more rigorous steady-flow formulation. Axial flow is seen to delay the onset of both convective and absolute instabilities.

Original languageEnglish
Title of host publicationProceedings of the 39th AIAA Fluid Dynamics Conference, San Antonio, Tx, USA. Paper AIAA-2009-3810.
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
ISBN (Print)9781563479755
Publication statusPublished - 2009

Publication series

Name39th AIAA Fluid Dynamics Conference


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