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Kinematic wave model of bed profiles in alluvial channels

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Title: Kinematic wave model of bed profiles in alluvial channels
Author: Tayfur, Gokmen; Singh, Vijay P.
Abstract: A mathematical model, based on the kinematic wave (KW) theory, is developed for describing the evolution and movement of bed profiles in alluvial channels. The model employs a functional relation between sediment transport rate and concentration, a relation between flow velocity and depth and Velikanov's formula relating suspended sediment concentration to flow variables. Laboratory flume and field data are used to test the model. Transient bed profiles in alluvial channels are also simulated for several hypothetical cases involving different water flow and sediment concentration characteristics. The model‐simulated bed profiles are found to be in good agreement with what is observed in the laboratory, and they seem theoretically reasonable for hypothetical cases. The model results reveal that the mean particle velocity and maximum concentration (maximum bed form elevation) strongly affect transient bed profiles.
Description: An edited version of this paper was published by AGU. Copyright 2006 American Geophysical Union.
Publisher: American Geophysical Union
Subject: alluvial channel
bed profile evolution and movement
diffusion wave
kinematic wave
numerical model
sediment transport rate
Department: Civil Engineering
Biological and Agricultural Engineering
URI: http://dx.doi.org/10.1029/2005WR004089
Date: 2006-06-21

Citation

Tayfur, G., and V. P. Singh (2006), Kinematic wave model of bed profiles in alluvial channels, Water Resource Research, 42, doi:10.1029/2005WR004089. To view the published open abstract, go to http://dx.doi.org and enter the DOI.

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