三维海洋紊流模型对杭州湾附近潮流场数值模拟

Numerical simulation of tidal flow near Hangzhou Bay with three dimensional ocean circulation model

采用一种半隐式三维海洋紊流模型对杭州湾及长江口附近的潮流场进行了数值模拟 .该模型在垂向上采用σ坐标 ,可以较精细地处理表面和底层、较好地模拟地形的垂向变化和密度分层对潮流场的影响 .潮汐流的潮位和潮流流速的二维、三维模拟结果与实测结果符合良好 .

A semi implicit three dimensional ocean circulation model is employed to simulate the tidal flow of Hangzhou Bay and Changjiang river estuary. σ coordinate is adopted in vertical direction. It permits the use of fine vertical resolution in the surface and bottom boundary layers. The effects of dramatically changing topography and density stratification can be taken into account. Numerical predictions of the tidal elevation and the tidal current agree well with the field data.