Modelling of sediment transport and bed deformation in rivers with continuous bends

Hefang Jing, Chunguang Li, Yakun Guo, Lixiang Zhang, Lijun Zhu, Yitian Li

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A two dimensional (2D) RNG k–e sediment model including the effects of secondary currents is developed
to simulate the sediment transport and bed deformation in rivers with continuous bends. Non-uniform
suspended and bedload sediment transports and the variation of effective bed material size distribution
are included in the model. A semi-coupled scheme for sediment model is proposed, which can be used for
simulating both the long- and short term sediment transport whenever riverbed changes. The model is
applied to simulate the flow and sediment transport in the upper reach of the Yellow River which is a
typical natural river reach with continuous bends. The river bed deformations caused by suspended
and bedload sediments are investigated. Good agreement between the numerically simulated results
and the field measurements is obtained, indicating that the model is capable of simulating the sediment
transport and predicting the bed deformation of rivers having continuous bends with reasonable
Original languageEnglish
Pages (from-to)224-235
Number of pages12
JournalJournal of Hydrology
Early online date15 Jul 2013
Publication statusPublished - 30 Aug 2013



  • RNG k–ε turbulence model
  • bed deformation
  • suspended sediment
  • bedload sediment
  • bed material granularity

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