长江口北支涌潮的一维数值模拟

Research on One-dimension Numerical Simulation in Tide Flow Computation

本文利用二阶TVD格式对长江口北支的涌潮现象进行了一维的数值模拟,成功捕捉了涌潮现象。高阶TVD格式原用于计算气动力学中激波的自动捕捉,具有高分辨率、高精度、不产生假振而且适应性强等性能。本文涌潮现象的计算结果与实际观测结果基本相符,说明了这类格式也适用于求解水动力学中的间断问题。

This paper presents the one-dimension numerical simulation of the tide at North branch of Changjiang estuary by using second-order TVD scheme successfully. High order TVD scheme has been used for capturing Shock on the field of aerodynamics, and has the character of well discrimination, precise and no fake oscillation, The simulation of tide is according to the actual phenomena so that such numerical scheme can be used for discontinuous solution.