A revised model for water flow, sediment transport, bed topography and grain size sorting in natural river bends

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.

[1]  A. Jacob Odgaard,et al.  River‐Meander Model. II: Applications , 1989 .

[2]  W. Dietrich,et al.  Bed Load Transport in a River Meander , 1984 .

[3]  Masashige Yamasaka,et al.  Bed Topography and Sorting in Bends , 1987 .

[4]  J. Bridge,et al.  Bed Load Grain Velocities and Sediment Transport Rates , 1984 .

[5]  W. Dietrich,et al.  Influence of the point bar on flow through curved channels , 1983 .

[6]  H. D. Vriend,et al.  Bed deformation in curved alluvial channels , 1985 .

[7]  Gary Parker,et al.  Secondary Flow in Mildly Sinuous Channel , 1989 .

[8]  P. Blondeaux,et al.  A unified bar–bend theory of river meanders , 1985, Journal of Fluid Mechanics.

[9]  G. Parker,et al.  Bend theory of river meanders. Part 1. Linear development , 1981, Journal of Fluid Mechanics.

[10]  Syunsuke Ikeda,et al.  Flow and Bed Topography in Curved Open Channels , 1976 .

[11]  F Engelund,et al.  FLOW AND BED TOPOGRAPHY IN CHANNEL BENDS , 1974 .

[12]  A. Jacob Odgaard,et al.  MEANDER FLOW MODEL. I: DEVELOPMENT , 1986 .

[13]  Syunsuke Ikeda,et al.  Bed Topography in Bends of Sand‐Silt Rivers , 1985 .

[14]  Syunsuke Ikeda,et al.  Flow and Bed Profile in Meandering Sand-Silt Rivers , 1986 .

[15]  J. Smith,et al.  A Model for Flow in Meandering Streams , 1984 .

[16]  W. Dietrich,et al.  Flow and Sediment Transport in a Sand Bedded Meander , 1979, The Journal of Geology.

[17]  A. Jacob Odgaard.  Bed Characteristics in Alluvial Channel Bends , 1982 .

[18]  J. R. Allen,et al.  Studies in Fluviatile Sedimentation: A Comparison of Fining-Upwards Cyclothems, with Special Reference to Coarse-member Composition and Interpretation , 1970 .

[19]  Lars Gottlieb,et al.  Three-dimensional flow pattern and bed topography in meandering channels , 1976 .

[20]  J. Bridge,et al.  Flow and sediment dynamics in a low sinuosity, braided river: Calamus River, Nebraska Sandhills , 1992 .

[21]  W. Dietrich.  Settling velocity of natural particles , 1982 .

[22]  H. J. De Vriend,et al.  COMPUTATION OF THE FLOW IN SHALLOW RIVER BENDS , 1980 .

[23]  A. Odgaard.  Transverse Bed Slope in Alluvial Channel Bends , 1981 .

[24]  J. Bridge,et al.  Flow and sedimentary processes in the meandering river South Esk, Glen Clova, Scotland , 1976 .

[25]  J. Bridge,et al.  The dynamics of a river bend: a study in flow and sedimentary processes , 1982 .

[26]  John F. Kennedy,et al.  TRANSVERSE BED SLOPES IN CURVED ALLUVIAL STREAMS , 1978 .

[27]  A. Jacob Odgaard,et al.  River-Meander Model: I. Development , 1989 .

[28]  G. Parker,et al.  Velocity Redistribution in Meandering Rivers , 1989 .

[29]  John F. Kennedy,et al.  Flow in alluvial-river curves , 1983 .

[30]  Bed topography and grain size in open channel bends , 1976 .

[31]  H. D. Vriend.  Velocity redistribution in curved rectangular channels , 1981, Journal of Fluid Mechanics.

[32]  R. Hooke.  Shear-Stress and Sediment Distribution in a Meander Bend , 1974 .

[33]  Jørgen Fredsøe,et al.  Hydraulic Theory of Alluvial Rivers , 1982 .

[34]  R. Hooke.  Distribution of Sediment Transport and Shear Stress in a Meander Bend , 1975, The Journal of Geology.

[35]  J. Bridge,et al.  Velocity profiles and bed shear stress over various bed configurations in a river bend , 1977 .

[36]  Chin-lien Yen.  BED TOPOGRAPHY EFFECT ON FLOW IN A MEANDER , 1970 .

[37]  A. Jacob Odgaard,et al.  Flow processes in a curved alluvial channel , 1988 .

[38]  Patricia L. Wiberg,et al.  Model for Calculating Bed Load Transport of Sediment , 1989 .

[39]  E. D. Andrews,et al.  Sorting of Bed Load Sediment by Flow in Meander Bends , 1985 .

[40]  H. J. De Vriend,et al.  A Mathematical Model Of Steady Flow In Curved Shallow Channels , 1977 .

[41]  J. Bridge.  Flow, bed topography, grain size and sedimentary structure in open channel bends: A three‐dimensional model: A reply , 1977 .

[42]  J. Bridge,et al.  A MODEL FOR THE ENTRAINMENT AND TRANSPORT OF SEDIMENT GRAINS OF MIXED SIZES, SHAPES, AND DENSITIES , 1992 .

[43]  Wolfgang Rodi,et al.  CALCULATION OF STRONGLY CURVED OPEN CHANNEL FLOW , 1979 .

[44]  A. Odgaard.  Meander Flow Model. II: Applications , 1986 .

[45]  Water Surface Configuration in Channel Bends , 1971 .

[46]  H. J. De Vriend,et al.  Main Flow Velocity in Short River Bends , 1983 .