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The density of organized vortices in a turbulent mixing layer

Moore, D. W. and Saffman, P. G. (1975) The density of organized vortices in a turbulent mixing layer. Journal of Fluid Mechanics, 69 (3). pp. 465-473. ISSN 0022-1120. http://resolver.caltech.edu/CaltechAUTHORS:20120806-132131523

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Abstract

It is argued on the basis of exact solutions for uniform vortices in straining fields that vortices of finite cross-section in a row will disintegrate if the spacing is too small. The results are applied to the organized vortex structures observed in turbulent mixing layers. An explanation is provided for the disappearance of these structures as they move downstream and it is deduced that the ratio of average spacing to width should be about 3·5, the width being defined by the maximum slope of the mean velocity. It is shown in an appendix that walls have negligible effect.


Item Type:Article
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http://dx.doi.org/10.1017/S0022112075001528DOIUNSPECIFIED
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=373515PublisherUNSPECIFIED
Additional Information:© 1975 Cambridge University Press. Received 16 September 1974. Published online: 29 March 2006. This work was made possible by a NATO research grant.
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Record Number:CaltechAUTHORS:20120806-132131523
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120806-132131523
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32945
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 Aug 2012 21:05
Last Modified:26 Dec 2012 15:50

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