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Turbulent vortex streets and the entrainment mechanism of the turbulent wakeThe results of an experimental investigation of a turbulent vortex street in the range from 1000 to 20,000 are presented. The vortex street was created by the motion of a circular cylinder in a motionless fluid (mercury). Photographs obtained showed that the turbulent street, created by the vortex shedding behind the cylinder, persisted at longer downstream distances and higher Reynolds numbers than previously reported in the literature. A theory was developed to account for the experimental measurements pertaining to the change of the geometrical characteristics, (the distance between the two rows of vortices and the longitudinal distance between two consecutive vortices on the same row), of the street in the downstream direction. The implications of the structure of the vortex street on the entrainment mechanism of the turbulent wake are discussed.
Document ID
19740044178
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Papailiou, D. D.
(Purdue University Lafayette, Ind.; California Institute of Technology, Jet Propulsion Laboratory, Propulsion Research , United States)
Lykoudis, P. S.
(Purdue University Lafayette, Ind., United States)
Date Acquired
August 7, 2013
Publication Date
January 8, 1974
Publication Information
Publication: Journal of Fluid Mechanics
Volume: 62
Subject Category
Fluid Mechanics
Accession Number
74A26928
Funding Number(s)
CONTRACT_GRANT: NSF GK-23694
Distribution Limits
Public
Copyright
Other

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