ONE-WAY ANALYSIS FOR SEDIMENT TRANSPORT PROCESS NEAR RIVERBED BY USING A SOLID-LIQUID MULTIPHASE TURBULENCE MODEL

Abstract

 To protect river infrastructures (especially, river bridge piers) from the huge flood disaster, it is important to accurately calculate and predict the sediment transport process. The characteristic of flow field around the pier has unsteady and non-equilibrium. Therefore, understanding the sediment transport process of local scouring is a limit to the equilibrium sediment transport equations. In this study, we applied a high-concentration solid-liquid multiphase turbulence model (GAL-LES) to the sediment transport process near the riverbed, and one-way analysis was carried out for the purpose of to verify the effectivity and validity of this model. As a result, it was suggested that GAL-LES model can explain the sediment transport process of a high-concentration fluidized bed in comparison with DEM.