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涌潮数值模拟新进展 潘存鸿 林炳尧 毛献忠 (浙江省水利河口研究院,浙江 杭州 310020) 摘要:采用基于Godunov格式的水位方程法(Watcr Level Formulation)求解包括底坡项的二维浅水流动方程,用于底Riemann解处理动边界问题。在典型浅水间断流动算例验证的基础上,经钱塘江河口实测涌潮资料验证,较好地模拟了钱塘江涌潮的发生、发展及其衰减的过程,复演了涌潮的机交和反射、一线潮等现象,对钱塘江涌潮宏观规律的认识有所增加。
A New Progress in Numerical Simulation of Gully PENG Cun-hong LIN Bing-yao MAO Xian-zhong (Zhejiang Provincial Institute of Water Conservancy and Estuary, Hangzhou 310020, China) Abstract: The two-dimensional shallow water flow equations including the slope term are solved by Watcr Level Formulation based on Godunov format. Bottom Riemann solution to the moving boundary problem. Based on the verification of a typical example of intermittent flow in shallow water, the tidal current data of Qiantang Estuary are validated to better simulate the occurrence, development and attenuation of the tidal current in the Qiantang River, Tidal wave and other phenomena, the understanding of the macro laws of the tidal surges in the Qiantang River has increased.