Abonnement à la biblothèque: Guest
TSFP DL Home Archives Comité de direction

LES OF LANGMUIR TURBULENCE IN STABLY STRATIFIED FLOW

Guillaume Martinat
Center for Coastal Physical Oceanography, Old Dominion University 4111 Monarch Way, 23508, Norfolk, VA, USA

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

Résumé

Turbulent shear flows on shallow continental shelves (here shallow means that the interaction with the solid, no-slip bottom is important) are of great importance because of their role in vertical mixing as well as on the transport of sediment and bioactive material. The presence of a wave-field in these areas can lead to the appearance of Langmuir circulation (LC) which is known to strongly affect the dynamics of a turbulent flow. We investigate with large eddy simulation the influence of a stable stratification on Langmuir Circulation. Results show that LC intensity is reduced and then suppressed by an increasing statification.