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Toward coherently representing turbulent wall-flow dynamics

Published online by Cambridge University Press:  01 October 2013

J. C. Klewicki
J. C. Klewicki*
Affiliation:
Department of Mechanical Engineering, University of New Hampshire, Durham, NH 03824, USA Department of Mechanical Engineering, University of Melbourne, Melbourne, Vic 3010, Australia
*
†Email address for correspondence: [email protected]
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Abstract

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The complex dynamics of turbulent flow in the vicinity of a solid surface underlie numerous scientifically important processes, and pose persistently daunting challenges in many engineering applications. Since their discovery decades ago, coherent motions have presented a tantalizing prospective opportunity for constructing descriptions of wall-flow dynamics using only a relatively small number of elements. The veracity and reliability of such representations are, however, ultimately tied to their basis in the Navier–Stokes equations. In this regard, the study by Sharma & McKeon (J. Fluid Mech., vol. 728, 2013, pp. 196–238) constitutes an important contribution, as it not only provides insights regarding the mechanisms underlying wall-flow coherent motion formation and evolution, but does so within a Navier–Stokes framework.

JFM classification

Nonlinear Dynamical Systems: Low-dimensional models Turbulent Flows: Turbulence control Turbulent Flows: Turbulent boundary layers
Type
Focus on Fluids
Information
Journal of Fluid Mechanics , Volume 734 , 10 November 2013 , pp. 1 - 4
Copyright
©2013 Cambridge University Press 

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