Part of #On CFD Modeling of Sediment Transport in Rivers# :
Publishing year : 2003
Conference : 6th International Conference on Civil Engineering
Number of pages : 8
Abstract: A computational modeling analysis of the flow and sediment transport and deposition in the meandering river models was performed. The river flow characteristics, including the mean velocity field and the Reynolds stress components, are evaluated. The simulation results were compared with the available experimental data of the river model and discussed. The Lagrangian tracking of individual particles was performed, and the transport and deposition of particles of various sizes in the meandering river were analyzed. Particular attention was given to sedimentation patterns of different size particles in the river-bend model. The flow patterns in the physical river were also studied. A Froude number-based scale ratio of 1: 100 was used, and the flow patterns in the physical and river models are compared. The result shows that the mean-flow quantities exhibit a dummy similarity, but the physical river turbulence parameters are different from the model. More strikingly, the particle sedimentation features in the physical and river models do not obey the expected similarity scaling.