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2015 | OriginalPaper | Chapter

4. Mathematic Modelling of Non-Equilibrium Suspended Load Transport, Reservoir Sedimentation, and Fluvial Processes

Authors : Qiwei Han, Mingmin He

Published in: Advances in Water Resources Engineering

Publisher: Springer International Publishing

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Abstract

This chapter consists of two parts: mechanism of non-equilibrium transport of non-uniform suspended load and its application to mathematical modelling. Based on a stochastic approach of sediment transport proposed by the authors, a 1D equation of non-equilibrium transport for each size group of non-uniform sediment is developed. The equations to predict the change of sediment concentration and the corresponding size distribution of suspended load and bed material are also derived. The concept that changes in size distribution are interrelated to sediment-carrying capacity is explored. These results reveal the essence of sediment transport of non-uniform sediment. In the second part, a mathematical model incorporating the mentioned equations to compute deposition and scouring in reservoirs as well as the fluvial processes of river channels has been developed. Verification of the model agrees well with field data.

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previous chapter River Channel Stabilization with Submerged Vanes

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Title: Mathematic Modelling of Non-Equilibrium Suspended Load Transport, Reservoir Sedimentation, and Fluvial Processes
Authors: Qiwei Han
Mingmin He
Publisher: Springer International Publishing
Book: Advances in Water Resources Engineering
Print ISBN: 978-3-319-11022-6

Electronic ISBN: 978-3-319-11023-3

Copyright Year: 2015
DOI: https://doi.org/10.1007/978-3-319-11023-3_4