Large eddy simulation of turbulence in ocean surface boundary layer at Zhangzi Island offshore

LI Shuang; SONG Jinbao; HE Hailun; HUANG Yansong

doi:10.1007/s13131-013-0326-0

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Article Navigation > Acta Oceanologica Sinica > 2013 > 32(7): 8-13

LI Shuang, SONG Jinbao, HE Hailun, HUANG Yansong. Large eddy simulation of turbulence in ocean surface boundary layer at Zhangzi Island offshore[J]. Acta Oceanologica Sinica, 2013, 32(7): 8-13. doi: 10.1007/s13131-013-0326-0

Citation:

LI Shuang, SONG Jinbao, HE Hailun, HUANG Yansong. Large eddy simulation of turbulence in ocean surface boundary layer at Zhangzi Island offshore[J]. Acta Oceanologica Sinica, 2013, 32(7): 8-13. doi: 10.1007/s13131-013-0326-0

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Large eddy simulation of turbulence in ocean surface boundary layer at Zhangzi Island offshore

doi: 10.1007/s13131-013-0326-0

1.
Key Laboratory of Ocean Circulation andWaves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Ocean College, Zhejiang University, Hangzhou 310058, China
2.
Key Laboratory of Ocean Circulation andWaves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
3.
State Key Laboratory of Satellite Ocean EnvironmentDynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
4.
South China Sea Marine Engineering Surveying Center, South China Sea Branch, State Oceanic Administration, Guangzhou 510300, China

Received Date: 2012-03-20
Rev Recd Date: 2012-10-18

Abstract

Abstract

This study uses a large eddy simulation (LES) model to investigate the turbulence processes in the ocean surface boundary layer at Zhangzi Island offshore. Field measurements at Zhangzi Island (39°N, 122°E) during July 2009 are used to drive the LESmodel. The LES results capture a clear diurnal cycle in the oceanic turbulence boundary layer. The process of the heat penetration and heat distribution characteristics are analyzed through the heat flux results from the LES and their differences between two diurnal cycles are discussed as well. Energy balance and other dynamics are investigated which show that the tide-induced shear production is the main source of the turbulence energy that balanced dissipation. Momentum flux near the surface shows better agreement with atmospheric data computed by the eddy correlationmethod than those computed by bulk formula.
- ocean surface boundary layer,
- large eddy simulation,
- turbulence,
- momentumflux,
- heat flux

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