STUDY OF TRANSPORT PROCESSES OF LARGE WOOD DERIVED FROM HARDWOODS ON MOVABLE BED FLUME EXPERIMENT

Abstract

 The behavior of large wood (LW) during flood events has been an important issue in a river management filed, and in recent years there has been growing interest in the relationship between LW and sed-iment transport mechanisms. In this study, a simple PSM-type LW model was modified to calculate sweeping transport of LW pieces and applied to reproduce their behavior in an existing large-scale movable bed flume experiment. Relatively good reproducibility was obtained for the location of LW accumulation, and a high contribution from the drag term, which evaluates the orientation of LW pieces, was suggested.