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On the decay of a turbulent vortex ring

Weigand, Alexander and Gharib, Morteza (1994) On the decay of a turbulent vortex ring. Physics of Fluids, 6 (12). pp. 3806-3808. ISSN 1070-6631. https://resolver.caltech.edu/CaltechAUTHORS:20130913-101706998

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Abstract

The spatiotemporal evolution of a turbulent vortex ring with an initial Reynolds number of 7500 is experimentally investigated using the technique of digital particle image velocimetry. The flow is initially characterized by the laminar/turbulent transition via azimuthal bending instabilities. After transition, the shedding of vorticity from peripheral regions of the ring is found to be responsible for the formation of a wake region. This shedding process results in the staircase‐like decay of the circulation and propagation speed of the vortex ring.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.868371 DOIArticle
http://pof.aip.org/resource/1/phfle6/v6/i12/p3806_s1PublisherArticle
Additional Information:© 1994 American Institute of Physics. Received 9 May 1994; accepted 16 August 1994. This work has been supported by the Office of Naval Research (ONR-URI Grant No. N00014-92-J-1610) under the program management of Dr. Edwin Rood.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR-URI)N00014-92-J-1610
Subject Keywords:VORTEX FLOW, TURBULENT FLOW, VELOCIMETERS, TRANSITION FLOW, INSTABILITY, WAKES, SHEAR FLOW, NOZZLES, FLOW VISUALIZATION, REYNOLDS NUMBER
Issue or Number:12
Classification Code:PACS: 47.27.Cn; 47.27.wb; 47.32.C-
Record Number:CaltechAUTHORS:20130913-101706998
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130913-101706998
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41316
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Sep 2013 21:15
Last Modified:03 Oct 2019 05:47

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