1. Pyroclastic Density Currents (PDC) behaviour and its prevention
1.1 3D Simulation of Dilute PDC
1.2 2D Shallow-Water Model
1.3 Simulation of PDC + Human model (DRUM)
2. Water accident in a river
2.1 Simulation Results by DRUM
Work of Mr. Tonoyama
2.1.1 Floating Process (Flow Velocity: 2.0m/s, Weir Height: 50cm)
2.1.2 Rotating Process (Flow Velocity: 0.75m/s, Weir Height: 50cm)
Above results were published from Annual Journal of Hydraulic Engineering, JSCE 65, Ⅰ_919-924, 2020. (in Japanese with English abstract)