长江口边界拟合坐标的三维潮流数学模型

李褆来; 窦希萍; 黄晋鹏

引用本文:	李褆来,窦希萍,黄晋鹏.长江口边界拟合坐标的三维潮流数学模型[J].水利水运工程学报,2000,(3):1-6

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长江口边界拟合坐标的三维潮流数学模型
李褆来¹,窦希萍²,黄晋鹏²
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

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 ,能较好地反映长江口复杂边界和地形下的三维潮流场变化

关键词: 潮流,边界拟合网格,三维数学模型,长江口

DOI：

分类号:TV14

基金项目:

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

LI Ti-lai¹,DOU Xi-ping²,HUANG Jin-peng²

Abstract:

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.

Key words: tidal currents,boundary fitted grid,three dimensional numerical model,the Yangtze estuary