FLOOD EXPERIMENTS CONSIDERING INUNDATED BUILDINGS AND ITS APPLICATION TO VALIDATION OF FUNDAMENTAL INUNDATION MODEL

Abstract

 The purpose of this study is to develop a numerical inundation model considering the effects of inundated buildings. Flood experiments considering inundation inside of the buildings were carried out, and their measurement results were precisely reproduced by a numerical model which applies the Torricelli’s theorem to estimate the inflow discharge at the building boundaries. The inundation model was applied to a real-scale urban area to find the significant difference from the simulation results of the conventional model of the MLIT guideline. Consequently, the effects of inundated buildings are not negligible, and the Torricelli’s theorem is applicable to estimate the inflow discharge at the building boundaries. In addition, the treatment of the buildings with more comprecated configuration and how to determine the area and the height of small inlet of the building walls should be more discussed.