本文应用有限差分法,对杭州湾采用二维模型,对钱塘江采用一维模型进行了潮波联合数值计算,得到了全日、半日(M_2)和浅水(M_4)分潮的调和常数,计算结果比单纯的二维模型结果更符合杭州湾潮汐潮流的实际情况,并得出了关于余水位和余流的更可信的结果。 In this paper, by using the finite difference method, a two-dimensional model was adopted for Hangzhou Bay and a one-dimensional model of Qiantang River was used to calculate the harmonic constants of tidal waves in the whole day, half day (M_2) and shallow water (M_4). The calculation results Which is more in line with the actual situation of tidal tide in Hangzhou Bay than pure two-dimensional model results and leads to more credible results on remaining water level and residual flow.