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A revised model for water flow, sediment transport, bed topography and grain size sorting in natural river bends
Author(s) -
Bridge John S.
Publication year - 1992
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/91wr03088
Subject(s) - sorting , bed load , sediment transport , geology , river bed , sediment , flow (mathematics) , grain size , hydrology (agriculture) , geotechnical engineering , channel (broadcasting) , shear stress , range (aeronautics) , geomorphology , mechanics , engineering , mathematics , physics , algorithm , aerospace engineering , electrical engineering
A revised model for the interaction of water flow, bed topography, and the rate and mean grain size of bed load in river bends is presented and compared with a large range of observational data. The model represents a modification of the approaches used by F. Engelund, J. S. Bridge, G. Parker, S. Ikeda, and coworkers. Model predictions generally agree with data from the River South Esk, Muddy Creek, River Dommel, and Hooke's laboratory channel. This simple model apparently performs at least as well as more complicated flow models. To make further improvements it is necessary to more accurately specify the interaction between local bed shear stress, sediment transport, and the local bed configuration.