Coupling method of 1D and 2D hydrodynamic models based on spatial topology

摘要

#$%^&*AU2020101587A420200910.pdf#####ABSTRACT of DESCRIPTION The invention discloses a coupling method of one-dimensional(1D) and twodimensional(2D) hydrodynamic models based on spatial topology, which comprises the following steps as follows: Developing a 1D hydrodynamic model, wherein the ID hydrodynamic model comprises a ID river network model used for simulating the stream flow in the river network and the situation of buildings which are affected by floods, and a ID pipe network model used for simulating the water flow situation in the urban pipe network; Developing a 2D hydrodynamic model, wherein the 2D hydrodynamic model is used for simulating a 2D shallow water flow on the land surface; Based on the ID river network model and the 2D hydrodynamic model, develop the coupling method of ID and 2D model for the surface of city;Based on the ID pipe network model and the 2D hydrodynamic model, develop the coupling method of ID and 2D model for the flow between the surface and underground of the city. The invention provides a robust coupling mode, which can adapt to the coupling calculation requirements for different types of floods; By this flexible ID and 2D coupling generalization mode, the simulating problems of flood propagation in small rivers and streets can be effectively solved.2/3 n 2 1 Figure 2 River chanrel 2D domain Forward fiwconneet Fgecur Figure 3