Suryanarayanan, Saikishan ; Narasimha, Roddam (2010) Point-vortex simulations reveal universality class in growth of 2D turbulent mixing layers Fluid Dynamics . No pp. given. ISSN 0015-4628
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Abstract
A central but controversial issue in free turbulent shear flows has been the universality (or otherwise) of their growth rates. We resolve this issue here in the special case of a temporal 2D mixing layer in a point vortex gas by extensive high-precision numerical simulations, utilizing for the first time a powerful ensemble-averaging strategy. The simulations show that the momentum thickness of such a mixing layer grows at the universal asymptotic rate of 0.0167 0.00017 times the velocity differential across the layer over a wide range of initial conditions, often after very long transients.
Item Type: | Article |
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Source: | Copyright of this article belongs to Springer. |
ID Code: | 67530 |
Deposited On: | 31 Oct 2011 06:06 |
Last Modified: | 31 Oct 2011 06:06 |
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