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Morphological modelling of rivers with erodible banks

✍ Scribed by Erik Mosselman

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
217 KB
Volume
12
Category
Article
ISSN
0885-6087

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✦ Synopsis

A bank erosion mechanism and provisions to account for the associated planform changes and input of bank erosion products are added to a two-dimensional, depth-averaged model of river morphology. The model is applied to a reach of the meandering gravel-bed River OhrÏ e (Eger) in the former state of Czechoslovakia. The agreement with observations is poor, but this can be ascribed to shortcomings in the ¯ow and bed topography submodels rather than to shortcomings in the bank erosion submodel. Better results are expected when a threedimensional ¯ow model, equations for sediment mixtures and a bank accretion mechanism are included. This inclusion will have to be preceded by fundamental research on bank accretion mechanisms and on hiding and exposure eects in the relationship for the in¯uence of gravity pull on sediment transport direction.

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