钱塘江涌潮二维数值模拟  

2D numerical simulation of tidal bore in Qiantang River

作　　者：潘存鸿[1] 林炳尧[1] 毛献忠[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020

出　　处：《海洋工程》2007年第1期50-56,共7页The Ocean Engineering

基　　金：国家自然科学基金资助项目(40106010);浙江省自然科学基金资助项目(M403054)

摘　　要：采用基于准确Riemann解的Godunov格式,求解包括底坡项的二维浅水流动方程,应用WLF(water level-bottom topogra-phy formulation)方法求解Riemann解。经实测涌潮资料验证,较好地模拟了钱塘江涌潮的发生、发展及其衰减的过程,复演了涌潮的相交、反射和一线潮等现象,对钱塘江涌潮宏观规律的认识有所加深。2D shallow-water equations with bottom topography are solved by Godunov-type scheme based on the exact Riemann solution, which is gotten by using WLF （Water Level-Bottom Topography Formulation）, The mathematical model is applied to simulate the formation, evolution and dissipation of the tidal bore in the Qiantang River. A good agreement is made between the computed and field measurements, and it also numerically replicates the phenomena of the intersecting, reflection of the tidal bores, and line-type tidal bore, which leads to more understanding about the tidal bores in the Qiantang River.

关 键 词：钱塘江 Godunov格式 涌潮 数值模拟 

分 类 号：TV131.4[水利工程—水力学及河流动力学]