2025 Volume 81 Issue 16 Article ID: 24-16042
In recent years, the river structures have been damaged due to the huge floods. 3D flow field around the river structure affects on the sediment transport process (bedload and suspended sediments) directly, which makes strong unsteady and non-equilibrium characteristics. In addition, the suspended sediments also affect on the vortex structure, and it is important to consider the effect of interaction force between fluid and sediment. In this study, a solid-liquid multiphase turbulent flow model (GAL-LES model) is applied to a vertical jet scour experiment to clarify the effect of suspended sediment on the vortex structure. The results showed the applicability of the GAL-LES model to local flow through comparisons of lateral scour shape and maximum scour depth. Furthermore, the results indicated that the large vortex structure has been weaken due to suspended sediments, suggesting that the interaction between sediment transport and vortex structure appears appreciably.
