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摘要
In the context of global warming and urbanization, urban flood is becoming more and more serious. In order to minimize the losses caused by urban flood disasters and improve the emergency treatment level of sudden heavy rainfall events in cities, it is of great significance to carry out research on urban flood numerical simulation technology. From the perspective of refined and efficient simulation of urban flood, this paper reviews the research progress of urban flood model and CPU —GPU heterogeneous parallel computing, systematically summarizing the construction methods of runoff yield and concentration model, one —dimensional channel/drainage network model, two—dimensional surface model, coupled model, fast urban flood model and the key technologies of CPU-GPU heterogeneous parallel computing. In view of the shortcomings of the current urban flood model research, it is necessary to carry out the full physical mechanism simulation research of urban flood process, and deeply analyze the applicability, simulation accuracy and computational efficiency of the full hydrodynamic urban flood model. It is also necessary to realize the rapid simulation of one—dimensional channel/drainage network and two—dimensional surface inundation of urban flood model based on heterogeneous parallel computing technology, which lays a foundation for the refined and efficient simulation of urban rainstorm and flood. ? 2023 China Water Power Press.
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