抄録
In the numerical models of irregular successive saltation, the collision of saltating particle with bedmaterial particle is treated as the collision between two rigid bodies. While, on the movable bed, not only the bed-material particle colliding with the saltating particle but other particles in the neighborhood of the colliding particle are affected by the collision. In other words, the consideration as the granular material is required on the modeling of collision process on a movable bed.
In this study, the distinct element method is applied to collect the basic information on the collision process on a movable bed. The characteristics of the coefficient of restitution is investigated based on the numerical information for various kinds of conditions. The effect of the movable bed on the saltating particles are also examined based on the simulation of the successive saltation with taking the characteristics of the coefficient of restitution into account.
