Author(s): J. S. Ribberink; J. T. M. Van Der Sande

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Abstract: 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 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 and small disturbances. A laboratory experimental verification of this adapted solution shows a satisfactory agreement between the measured and calculated aggradation.

DOI: https://doi.org/10.1080/00221688509499355

Year: 1985