Large eddy simulation of turbulence in ocean surface boundary layer at Zhangzi Island offshore
Large eddy simulation of turbulence in ocean surface boundary layer at Zhangzi Island offshore
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DOI：
10.1007/s13131-013-0326-0
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发表时间：
2013-07
影响因子：
1.4
通讯作者：
Shuang Li;Jinbao Song;Hailun He;Yansong Huang
中科院分区：
文献类型：
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作者：
Shuang Li;Jinbao Song;Hailun He;Yansong Huang
本文采用大涡模拟（LES）模式研究了獐子岛近海海洋表面边界层湍流过程。利用2009年7月在獐子岛（39°N, 122°E）的实测数据来驱动LES模型。LES结果在海洋湍流边界层中捕捉到一个清晰的日循环。利用LES热通量结果分析了热渗透过程和热分布特征，并讨论了两个日循环之间的差异。能量平衡和其他动力学研究表明，潮汐诱导的剪切产生是平衡耗散的湍流能量的主要来源。用涡相关法计算的近地表动量通量与大气数据的吻合度比用体积公式计算的要高。
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 LES model. 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 correlation method than those computed by bulk formula.