Author(s): Makoto Takeda; Naoki Matsuo
Linked Author(s): Naoki Matsuo
Keywords: Inundation analysis method; Ground elevation; Analysis grid; Numerical simulation
Abstract: Although inundation analysis methods are widely used and have presented effective information in examination of measures for water disaster, further improvements in precision and the effectiveness of analysis are desired. Recently, more detailed ground elevation data have been obtained by the development of survey technology. However, the usual analysis method treats only average ground elevation and average water depth in the analysis grid and detailed ground elevation data are not used effectively. The h-VA inundation analysis method has been proposed and examined by using various analysis conditions in this study. This method has the characteristics in which ground elevation in analysis grid is considered in inundation analysis. In this study, the nesting model with h-VA inundation analysis is developed and the validity and the effectiveness of this model are examined by using numerical experiment. From this study, especially, it is found that the nesting model in which the fine grid is set to the area around the dike break and the coarse grid is set to other area have good results.
Year: 2010