Scouring of Sand Bars Due to Non-equilibrium Sediment Transport

Abstract

The scouring process of sand bars due to overflow is experimentally, theoretically and numerically studied. The bed load formula of Meyer Peter-Miuller is extended to include the effects of local slope and pressure gradient, by using the experimental results. The equation of motion is derived to describe the sand motion under non-equilibrium condition. Numerical computations based upon these relationships simulate very well the temporal change of the measured profiles of sand bars.