The large eddy simulation methods can be used to analysis and calculate the decay and transport rules of wake vortex in near ground phases, but it′s too complex and difficult to use.
采用大涡模拟方法可以分析和计算近地阶段尾涡消散和运动规律，但模型繁琐、计算复杂。
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In this paper the eddy viscosity hypothesis was given up and the explicit expressions of Renolds stresses have been deduced directly from the transport equations of Renolds stresses.