ABSTRACT
The sediment transport modeling in rivers is a complex phenomenon, due to the diversity of its parameters. In fact, the choice of a model or a methodology that can better quantify sediment transport, remains always poorly understood. In this context, a new approach to studying the morphological evolution of rivers is proposed by Charru (2006) for turbulent flow. In further research, Lajeunesse realizes an experimental study to validate this model, and proposes a new formula to calculate the bed load transport rate. The current study focuses on the interactions between the water flow and sediments in rivers. First, a comparative analysis of empirical laws of bed load transport was conducted, where the variation of particles diameter was particularly considered. Second, we were interested in the study of the morphological changes in rivers. It was performed by means of a numerical modeling SISYPHE coupled with TELEMAC 2D. The analysis of simulations with experimental data showed acceptable results.
