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The inviscid axisymmetric stability of the supersonic flow along a circular cylinderThe supersonic flow past a thin straight circular cylinder is investigated. The associated boundary-layer flow (i.e. the velocity and temperature field) is computed; the asymptotic, far downstream solution is obtained, and compared with the full numerical results. The inviscid, linear, axisymmetric (temporal) stability of this boundary layer is also studied. A so-called 'doubly generalized' inflexion condition is derived, which is a condition for the existence of so-called 'subsonic' neutral modes. The eigenvalue problem (for the complex wavespeed) is computed for two free-stream Mach numbers (2.8 and 3.8), and this reveals that curvature has a profound effect on the stability of the flow. The first unstable inviscid mode is seen to disappear rapidly as curvature is introduced, while the second (and generally the most important) mode suffers a substantially reduced amplification rate.
Document ID
19900048861
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Duck, Peter W.
(Manchester, University United Kingdom)
Date Acquired
August 14, 2013
Publication Date
May 1, 1990
Publication Information
Publication: Journal of Fluid Mechanics
Volume: 214
ISSN: 0022-1120
Subject Category
Aerodynamics
Accession Number
90A35916
Funding Number(s)
CONTRACT_GRANT: NAS1-18605
CONTRACT_GRANT: NAS1-18107
Distribution Limits
Public
Copyright
Other

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