Abstract
A body swept away by a water flow is calculated using an incompressible Smoothed Particle Hydrodynamics method and compared to experiments in order to develop a method which can predict the behavior of the floating body in flash flow. Although the translational motion of the body in the simulation agrees with the experimental result, a discrepancy is found in the rotational motions, showing that there is a room for improvement in the model. When the wall exists at the downstream end, the spherical body weakens the averaged hydrodynamic load to the downstream wall but increases the flow velocity. It is also shown that high pressure regions appear at the downstream wall right after the water flow reaches the wall.
