Investigation of Velocity and Concentration Profiles of Turbidity Flow in River Bends

The purpose of this study was to investigate the behavior of high flow in bending with Erodible Bed, This paper presents a series of experiments in which saline gravity currents flowed through a sinuous channel model. This flume contains three successive bends with three different relative curvature radiuses:40, 80 and cm,8.5 m length, 20cm width and 70cm height. The results show, in condition of a constant discharge, increasing the concentration of the inlet current, the flow velocity of the body flow increases on a mobile bed. The rate of increase in velocity depends on changes in the form of the bed the flow rate of the body will be reduced to about 19%. The velocity of the forehead has increased in the conditions of the mobile bed by forming the form of the bed. So decrease shear stress and omit the bed form cause increasing the velocity of the forehead decrease about 6%.