Numerical Simulation of Vertical Sorting in Sheetflow Sediment Transport by Two-Phase Turbulent Flow Model

Simulations of the vertical sorting under the oscillatory flow condition have been conducted by using one-way model without considering solid-liquid interaction. In this paper, simulation by two-way model to treat the solid-liquid and solid-solid interactions was performed by using the distinct element method for tracking particle motion. The influence on the flow field by the difference between one-way and two-way models on the vertical sorting process was investigated.