Abstract
River channel processes with bank erosion are investigated by numerical models in comparison with field and experimental data. At first, a simplified numerical model is applied to the river morphology of the Meghna River in Bangladesh, and the relation between flow properties and the location of bank erosion is discussed. However, in the case of actual river, it is difficult to clarify main factors of bank erosion because of the complicated channel form and bank materials. Therefore, we conduct the experiments and numerical analyses of channel processes starting from initial meandering and straight plan forms, and the influence of hydraulic parameters and the behavior of sand bars on the rate of bank erosion are elucidated.
