Abstract
A numerical analysis is conducted for describing the bed-load layer as a solid/liquid two phase flow. The irregular successive saltation model for the solid phase is coupled with the k-ε model of turbulence for the liquid phase by considering the interphase momentum transport with the aid of the PSI-cell model. The present simulation estimate the velocity, the existing probability density and other characteristics of the bed-load motion: the height and length of saltation and so on. They are compared with the simulation under the clear-water assumption. Results of the present simulation show better agreements with the experiment than that of the simulation under the clear-water assumption.
