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Interaction of surface waves with turbulence: direct numerical simulations of turbulent open-channel flow

Published online by Cambridge University Press:  26 April 2006

Vadim Borue ,
Steven A. Orszag  and
Ilya Staroselsky
Vadim Borue
Affiliation:
Applied and Computational Mathematics, Princeton University, Princeton, NJ 08544, USA
Steven A. Orszag
Affiliation:
Applied and Computational Mathematics, Princeton University, Princeton, NJ 08544, USA
Ilya Staroselsky
Affiliation:
Cambridge Hydrodynamics, Inc., PO Box 1403, Princeton, NJ 08542, USA
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Abstract

We report direct numerical simulations of incompressible unsteady open-channel flow. Two mechanisms of turbulence production are considered: shear at the bottom and externally imposed stress at the free surface. We concentrate upon the effects of mutual interaction of small-amplitude gravity waves with in-depth turbulence and statistical properties of the near-free-surface region. Extensions of our approach can be used to study turbulent mixing in the upper ocean and wind–sea interaction, and to provide diagnostics of bulk turbulence.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 286 , 10 March 1995 , pp. 1 - 23
Copyright
© 1995 Cambridge University Press

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