期刊
ADVANCES IN METEOROLOGY
卷 2017, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2017/2819308
关键词
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资金
- National Natural Science Foundation of China [50979062]
- International S&T Cooperation Projects
- IWHR Research& Development Support Program [JZ0145B222017]
- Ministry of Science and Technology of China [2012DFG21780]
Hydrodynamic models were commonly used for flood risk management in urban area. This paper presents initial efforts in developing an urban flood inundation model by coupling a one-dimensional (1D) model with a two-dimensional (2D) model to overcome the drawbacks of each individual modelling approach, and an additional module is used to simulate the rainfall-runoff process in study areas. For the 1D model, the finite difference method is used to discretize the Saint-Venant equations. An implicit dual time-stepping method (DTS) is then applied to a 2D finite volume model for an inundation simulation to improve computational efficiency. A total of four test cases are applied to validate the proposed model; its performance is demonstrated by a comparison with an explicit scheme and previously published results (an extensive physical experiment benchmark case, a vertical linking example, and two real drainage cases with actual topography). Results demonstrate that the proposedmodel is accurate and efficient in simulating urban floods for practical applications.
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