渤海三维潮流数值模拟
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摘要: 本模型以具有自由面的三维非线性Navier-Stokes方程为基本方程,经σ坐标变换得到模式方程。基于过程分裂法,将三维流动中的快过程与慢过程劈开,并对每部分选用适合其物理特性和数值行为的计算格式,然后耦联求解。应用本模型详细计算了渤海的三维潮运动。其中,潮波系统模拟获得理想的结果;采用十层模式计算了M2潮流,以较高的分辨率揭示了潮流的空间结构特征。最后本文给出了三维潮流预报的应用实例。
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