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Coherent motion in excited free shear flowsThe application of the inviscid instability approach to externally excited turbulent free shear flows at high Reynolds numbers is explored. Attention is given to the cases of a small-deficit plane turbulent wake, a plane turbulent jet, an axisymmetric jet, the nonlinear evolution of instabilities in free shear flows, the concept of the 'preferred mode', vortex pairing in turbulent mixing layers, and experimental results for the control of free turbulent shear layers. The special features often attributed to pairing or to the preferred mode are found to be difficult to comprehend; the concept of feedback requires further substantiation in the case of incompressible flow.
Document ID
19870043007
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wygnanski, Israel J.
(Tel Aviv University Israel)
Petersen, Robert A.
(Arizona, University Tucson, United States)
Date Acquired
August 13, 2013
Publication Date
February 1, 1987
Publication Information
Publication: AIAA Journal
Volume: 25
ISSN: 0001-1452
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 85-0539
Accession Number
87A30281
Funding Number(s)
CONTRACT_GRANT: NAG3-460
CONTRACT_GRANT: NSF MEA-82-10876
Distribution Limits
Public
Copyright
Other

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