本文提出了一种不恒定流一、二维联解的计算方法,一维采用隐式差分法,二维采用加权余量法逼近的三节点三角形单元,在时间方向上采用经过Newton—Raphson 迭代处理的加权差分法,一、二维连接点处流量采用 G.GRAY流量计算公式。本方法在珠江磨刀门口门整治一、二维联解潮流计算中,较好地复演了天然河网与海区潮流运动规律。 In this paper, we propose a method of calculating the first and the second-dimensional coherent solutions of unsteady flow. One-dimensional three-node triangular elements approximated by implicit difference method and two-dimensional weighted residual method are used in Newton-Raphson iteration Weighted differential method, a, two-dimensional connection point at the flow G.GRAY flow calculation formula. The method in the Pearl River Shaodong door remediation of a two-dimensional solution to the calculation of the tide, a good repeat of the natural river network and the trend of the movement of the sea.