EXPERIMENTAL AND NUMERICAL STUDY ON INUNDATION FLOWS IN URBAN AREAS
Hydraulic experiments are carried out in a large channel to make detailed measurement of inundation flows that pass through model buildings. The inundation flows are caused by levee breach and change from supercritical flows into subcritical flows as they flow down. The model buildings are located in supercritical area or subcritical area. Then a refined two-dimensional shallow equation model is applied to the experiments. The present numerical model introduces the porosity to take into account the fraction of the land surface occupied by buildings and adopts the CIP-CLS2 scheme for accurate computation for convective processes. The comparisons between the experiments and the numerical simulations demonstrate that the present numerical model can reproduce the complex flow behavior, indicating its applicability to real inundation flows.
inundation flow levee breach large-scale ezperiment two-dimensional numerical model CIP-CLS2 scheme
Yoshihisa Kawahara Yasushi Ito Tatsuhiko Uchida
Department of Civil and Environmental Engineering, Hiroshima University 1-4-1 Kagamiyama, Higashi Hi River & Water Resources Division, Osaka Main Office, CTI Engineering, Co., Ltd.1-2-15 Otemae,Chno-ku Research and Development Initiative, Chuo University 1-13-27 Kasuga, Bunkyo-ku, Tokyo, Japan
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
246-251
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）