Abstract: A nonlinear parabolic model for aggradation processes in alluvial rivers or channels is presented. A general exponential formula for the sediment transport relation is postulated to account for the nonequilibrium process. ...

Abstract: The exact linear solutions for the sediment transport and bed form evolution for one‐dimensional sediment‐water two‐phase motion have been obtained using the St. Venant shallow‐water equations with the assumption of ...