Experiments and Development of a Model on the Inundated Flow with Floating Bodies

Abstract

Inundated flow with floating bodies was videotaped in Banda Aceh at the time of the 2004 Indian Ocean Tsunami, and attracted public attention. In light of the circumstances, this study presents a model for estimating the moving velocity of floating bodies, i. e., the current velocity of inundated flow with floating bodies in a steady state. The model adopts the notion of the bore theory regarding the floating bodies as a hypothetical fluid, and takes account of the resistance due to the floating bodies piling up at the surge front of inundated flow. Experiments are carried out to grasp the behavior of floating bodies at the surge front. Through examinations of the experimental results and the solutions of the model, it is concluded that the model is useful to estimate the inundated flow with floating bodies.