We report direct numerical simulations of incompressible unsteady open-channel flow. Two mechanisms of turbulence production are considered: shearat 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.
Interaction of surface waves with turbulence: direct numerical simulations of turbulent open-channel flow
Wechselwirkung zwischen Oberflaechenwellen und Wirbelbildung: direkte numerische Simulation einer offenen Kanalstroemung
Journal of Fluid Mechanics ; 286 ; 1-23
1995
23 Seiten, 12 Bilder, 19 Quellen
Article (Journal)
English