长江口边界拟合坐标的三维潮流数学模型  

3-D model of tidal currents in the Yangtze estuary with orthogonal curvilinear coordinates

作　　者：李禔来 窦希萍[2] 黄晋鹏[2] 

机构地区：[1]南京水文水资源研究所,江苏南京210024 [2]南京水利科学研究院河港研究所,江苏南京210029

出　　处：《水利水运科学研究》2000年第3期1-6,共6页

摘　　要：在正交曲线坐标系下 ,采用坐标变换、有限差分、交替隐式求解、动边界处理等方法 ,建立了边界拟合网格的三维潮流数学模型 .应用在长江口潮流场的计算中 ,得到了与长江口实测潮位、流速和流向相一致的结果 。In orthogonal curvilinear coordinates, a numerical model of the three dimensional unsteady flow of the Yangtze estuary is presented. Boundary fitted grid, coordinate transformation, and finite difference , alternating direction implicit and moving boundary methods are adopted. The tidal levels and velocities are obtained by calculating the tidal currents in the estuary. The model reflects the flow variance in the complicated geographical conditions and the numerical results are in good agreement with the measured data.

关 键 词：潮流 边界拟合网格 三维数学模型 长江口 

分 类 号：P731.23[天文地球—海洋科学]