NUMERICAL SIMULATION OF FLOOD ESTIMATION FOR GIS-BASED LOCAL INUNDATION MAP
This study simulated the flood inundations of the Nakdong River catchment running through Yangsan, a small city located in the south eastern area of Korea by using the depth averaged two-dimensional hydrodynamic numerical model. The numerical model employs the staggered grid system including moving boundary and a finite different method to solve the Saint-Venant equations. A second order upwind scheme is used to discretize the nonlinear convection terms of the momentum equations, whereas linear terms are discretized by a second order Leap-frog scheme (Cho and Yoon, 1998). The numerical model was applied to a real topography to simulate the flood inundation of the Yangsan basin in Yangsan. The numerical result for urban district was reasonable in view of the urban flood damage when compared with field measurement and then it will be able to predict the inundation area efficiently for prospective flood events such as 100, 200 and 500 year flood events. These results can be essentially utilized to construct the inundation map after building the GIS-based database in local public organizations in order to protect the life and property safely.
Saint-Venant equations Inundation Moving boundary Staggered grid
Jin Woo Lee Seung Oh Lee Yong-Sik Cho
Department of Civil Engineering, Hanyang University, 17 Haengdang-dong Seongdong-gu, Seoul 133-791, School of Urban and Civil Engineering, Hongik University, 72-1 Sangu-dong Mapo-gn, Seoul 121-791, Ko Department of Civil Engineering, Hanyang University, 17 Haengdang-dong Seongdong-gu, Seoui 133-791
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
98-101
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）