Aggradation in rivers due to overloading

Aggradation in rivers due to overloading

Ribberink, J.S.
Van der Sande, J.T.M.

Civil Engineering and Geosciences

Hydraulic Engineering

1984-01-01

The problem of aggradation in a river due to overloading is tackled with a mathematical model consisting of a set of one-dimensional (in space) basic equations in which the water motion is assumed to be quasi-steady and the sediment transport is determined by local conditions. Analytical solutions are presented of a linearized simple-wave model, parabolic model and the more general hyperbolic model. For large disturbances in the sediment transport the linearization is not allowed and an adapted solution of the hyperbolic model is obtained. Numerical computations with the complete set of basic equations learn that this solution yields better results for large disturbances but also for small disturbances. A validity diagram is presented for the different analytical models using only one dimensionless time parameter. An attempt is made to verify the analytical models with experiments of Soni et al (1980).

river dynamics
erosion

http://resolver.tudelft.nl/uuid:f386ff22-a323-4d5b-badb-517a02b94d04

TU Delft

0169-6548

Communications on hydraulics, 1984-01

Institutional Repository

report

(c) 1984 Ribberink, J.S., Van der Sande, J.T.M.