Abstract: In vegetated open channel flow, sediment transport is affected by both boundary shear and vegetation-induced turbulence. This study presents a theoretical derivation of the critical flow condition for incipient sediment ...

Abstract: In the derivation of his bedload formula, Bagnold approximated the critical near-bed flow velocity for incipient sediment motion as the particle settling velocity. However, this approximation has not yet been validated ...

Abstract: The Shields curve underestimates the critical shear stress for incipient sediment motion in shallow flow conditions. This study starts with a consideration of sediment transport based on Bagnold’s concept of stream power. ...

Abstract: This study evaluates sediment gradation effects on clear-water scour at bridge piers. By considering the average erosion and deposition rates in a pier-scour hole, the normalized equilibrium scour depth is theoretically ...

Abstract: The pickup probability of bedload sediment can be defined as the channel width fraction that is only associated with entrained particles. With this definition, the dimensionless bedload transport rate can be formulated as ...