抄録
It is important to track the behavior of bottom sediment which does harm to water environment. The purpose of this study is to predict a series of natural phenomena, namely, natural wind creates currents in the water, and, in turn, stirs up the bottom sediment. In our numerical simulations transport of fluid (air and water) and mass (sediment) are examined simultaneously. From the numerical results influences of inflow (natural wind) velocity on the stirred bottom sediment was evaluated. It is discovered that bottom sediment moves more broadly and actively in larger inflow velocity. It is also revealed that oscillate flow occurs in the water. This may cause the sediment resuspension.
