抄録
In this study, mechanisms of suspended sediment transport in the downstream region of a vegetated area that was modeled by a pile group were investigated by performing a flume experiment with the Particle Image Velocimetry (PIV) technique for particles of neutral buoyancy and relatively heavy materials. The MASCON model were additionally applied in order to reconstruct the three-dimensional information of flows in the region by using the velocity components on several horizontal planes obtained by the PIV analysis. The experimental results show that the heavy particles selectively follow the vertical motions of the relatively large-scale structures which are generated by the wakes of piles, and their behavior resemble the specific phenomenon that is called "trajectory bias."
