长江口三维潮流数值计算及动力分析  

A 3-D HYDRODYNAMICAL MODEL FOR TIDAL CURRENT FIELD OF THE YANGTZE RIVER ESTUARY

作　　者：于凤香[1] 宋志尧[1] 李瑞杰[1] 

机构地区：[1]河海大学海岸及海洋工程研究所,江苏南京210098

出　　处：《海洋湖沼通报》2003年第3期14-23,共10页Transactions of Oceanology and Limnology

基　　金：河海大学科技创新基金(项目编号:2001410543);国家自然科学基金(资助编号:49971064);江苏省重点实验室开放基金(资助编号;1640703005)

摘　　要：采用三维动力学数学模型对长江口潮流场进行了计算,对长江口潮流流态在一个潮周期内逐时进行了分析,并对长江口南支盐水倒灌从动力学角度进行了初步探讨。计算结果表明:文中模型较好地重演长江口潮流场,可以用于大型复杂河口工程实际中的潮流场的计算和分析。A 3-D Hydrodynamic model is used for computing and analyzing the tidal currents for the Yangtze River Estuary in this paper. On the basis of tidal currents analysis, the elementary dynamic mechanisms of salt water flowing backwards form the south branch to the north are discussed. It combines curvilinear orthogonal coordinates in the horizontal direction with Sigma mapping in the vertical direction to calculate and analyze the water level and tidal currents. It shows that the results of calculation are in good agreement with the results of the field data. The model can be used in large estuarine engineering projects such as the Yangtze River Estuary.

关 键 词：长江口 三雏水动力学数学模型 潮流场 曲线正交坐标 潮流流态 潮周期 

分 类 号：TV131.3[水利工程—水力学及河流动力学] P731.2[天文地球—海洋科学]