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ISSN Онлайн: 2642-0554

THE STRUCTURE OF TURBULENCE IN A SHALLOW WATER WIND-DRIVEN SHEAR CURRENT WITH LANGMUIR CIRCULATION

Andres E. Tejada-Martinez
Civil & Environmental Engineering University of South Florida Tampa, FL.

Chester E. Grosch
Center for Coastal Physical Oceanography and Ocean, Earth and Atmospheric Sciences, Old Dominion University, Norfolk, Virginia 23529, USA

Аннотация

Large-eddy simulation (LES) of Langmuir circulation in a wind-driven shear current in shallow water is reported. After the introduction and a brief description of the governing equations and the numerical method, we focus on the major differences in the dynamics between wind shear-driven Couette flow and the same flow with Langmuir circulation. This comparison will rely on flow visualizations and diagnostics including mean velocity profiles, invariants of the resolved Reynolds stress anisotropy tensor and balances of the transport equations for resolved mean turbulent kinetic energy and resolved Reynolds stress tensor.