2023 Volume 79 Issue 17 Article ID: 23-17033
The Great East Japan Earthquake tsunami swept away and washed ashore many trees, vessels, and vehicles. In order to prevent such damage, it is necessary to understand the behavior of drifting debris and tsunami in ports and harbors. This study conducted drifting simulations of a floating body using DualSPHysics targeting the experiment conducted in a wave basin by Fujii et al.(2005), and the applicability of the model was evaluated. The coupling simulation with SWASH, DualSPHysics could simulate tsunami propagation by reducing the computational cost. The use of the mDBC well reproduced the drifting behavior of the floating body, and the 3D simulation was able to simulate the phenomenon of the floating body runup from the water to the land, although the reproducibility of the change in the moving speed due to the difference in the installation angle of the floating body remained as an issue.
