Abstract
Trajectory of flying debris in an urban area strongly depends on the flow filed and the physical properties of the debris itself. In this study, the trajectories of spheres and rotating plates are predicted, by using the turbulence flow filed in an urban area (Kanda, Tokyo) obtained by LES. The results show that the debris in turbulent flow filed fly a longer distance than in uniform flow due to the large instantaneous wind pressure and velocity, and the rotating plates fly longer than spheres due to the existence the lift force.