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Inundation Flow with Floating Objects under the Condition of a Movable Bed

2011; Volume: 67; Issue: 2 Linguagem: Inglês

10.2208/kaigan.67.i_311

1883-8944

Takashi Soma, Miki AZUMA, Hideo MATSUTOMI,

Earthquake and Tsunami Effects

Inundation flow with floating objects was witnessed and videotaped in Banda Aceh, Indonesia at the 2004 Indian Ocean Tsunami. With this background, a simple model for estimating such a flow was developed by the authors with a fixed bed in mind, where the model adopted the notion of the conventional bore theory regarding the floating objects as a hypothetical fluid, and took account of the resistance force due to the floating objects piling up at the surge front of the flow. However, as the flow is under the condition of a movable bed in most cases, laboratory experiments are newly carried out under its condition. Through the examination of experimental results and solutions of the model, whether the model is useful and basic characteristics of the inundation flow are discussed.