Chatelain, Philippe and Kivotides, Demosthenes and Leonard, Anthony (2003) Reconnection of Colliding Vortex Rings. Physical Review Letters, 90 (5). Art. No. 054501. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:CHAprl03
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We investigate numerically the Navier-Stokes dynamics of reconnecting vortex rings at small Reynolds number for a variety of configurations. We find that reconnections are dissipative due to the smoothing of vorticity gradients at reconnection kinks and to the formation of secondary structures of stretched antiparallel vorticity which transfer kinetic energy to small scales where it is subsequently dissipated efficiently. In addition, the relaxation of the reconnection kinks excites Kelvin waves which due to strong damping are of low wave number and affect directly only large scale properties of the flow.
|Additional Information:||©2003 The American Physical Society (Received 3 September 2002; revised 16 December 2002; published 6 February 2003) This research was partially supported by the Office of Naval Research and the Department of Energy.|
|Subject Keywords:||Navier-Stokes equations; vortices; flow simulation|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||26 Apr 2006|
|Last Modified:||18 Sep 2014 18:11|
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