FLUME EXPERIMENTS AND NUMERICAL SIMULATIONS CONSIDERING ACTUAL BUILDING ARRANGEMENT AND FLOODWATER INFILTRATION INTO BUILDINGS

Abstract

 The flume experiments considering actual building arrangement and floodwater infiltration into buildings were carried out, observing the propagation process of inundation flow and measuring the water depth at several points. These measurement data were compared with the simulation results of three different numerical models: Unstructured mesh model, MLIT model, and Lumped building inundation model. It was found that the Lumped building inundation model, newly developed here, is an excellent model, which can reproduce the building inundation with time lag, and simulation cost is efficient with the similar coarse mesh system to the MLIT model, while the Unstructured mesh model has some difficulties in applying to an actual area for its finer mesh system.