在有限体积法的框架下采用无结构网格,应用Steger-warming型的向量分裂格式求解黎曼初值问题的外法向数值通量,通过设置临界水深选取涨落潮期间曼宁系数模拟了钱塘江潮波的整体变形,并比较了沿程测点潮位数值计算与实测值。结果表明,该法可行、精度高、稳定性好,能较好地复演钱塘江潮位暴涨过程及涌潮的宏观特性。 In the framework of finite volume method, unstructured grids are used. The Steger-warming vector splitting scheme is used to solve the external normal fluxes of the initial Riemannian problem. By setting the critical water depth, the Manning coefficient during the tide and the tide is selected to simulate the Qiantang River tidal wave The overall deformation, and compared with the measuring point tide median calculation and the measured value. The results show that the method is feasible, accurate and stable. It can reproduce the macroscopic characteristics of the surge in Qiantang River tide and the tidal surges.