首页|Large eddy simulation of the rotation effect on the ocean turbulence kinetic energy budget in the surface mixed layer

Large eddy simulation of the rotation effect on the ocean turbulence kinetic energy budget in the surface mixed layer

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A non-hydrostatic,Boussinesq,and three-dimensional large eddy simulation (LES) model was used to study the impact of the Earth's rotation on turbulence and the redistribution of energy in turbulence kinetic energy (TKE) budget.A set of numerical simulations was conducted,(1) with and without rotation,(2) at different latitudes (10°N,30°N,45°N,60°N,and 80°N),(3) with wave breaking and with Langmuir circulation,and (4) under different wind speeds (5,10,20,and 30 m/s).The results show that eddy viscosity decreases when rotation is included,indicating that rotation weakens the turbulence strength.The TKE budget become tight with rotation and the effects of rotation grow with latitude.However,rotation become less important under Langmuir circulation since the transport term is strong in the vertical direction.Finally,simulations were conducted based on field data from the Boundary Layer and Air-Sea Transfer Low Wind (CBLAST-Low) experiment.The results,although more complex,are consistent with the results obtained from earlier simulations using ideal numerical conditions.

large eddy simulation (LES)Earth rotationturbulence kinetic energy (TKE)

LI Shuang、SONG Jinbao、HE Hailun

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Ocean College, Zhejiang University, Hangzhou 310058, China

Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography , State Oceanic Administration(SOA), Hangzhou 310012, China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Basic Research Program of China (973 Program)National Basic Research Program of China (973 Program)and the Fund for Creative Research Groups by NSFC

41206015411060192011CB4035012012CB41740241121064

2014

海洋湖沼学报(英文版)
中国海洋湖沼学会

海洋湖沼学报(英文版)

CSTPCDCSCDSCI
影响因子：0.386
ISSN：2096-5508
年,卷(期)：2014.32(5)
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