Journal ArticleDOI
Sorting of Bed Load Sediment by Flow in Meander Bends
Gary Parker,E. D. Andrews +1 more
TLDR
In this article, a theory of two-dimensional bed load transport of graded material, including the effects of gravity on lateral slopes and secondary currents, is developed, coupled with a simple treatment of flow in bends, an analytically determined bend shape, and the condition of continuity of each grain size range in transport.Abstract:
Equilibrium sorting of coarse mobile bed load sediment in meander bends is considered. A theory of two-dimensional bed load transport of graded material, including the effects of gravity on lateral slopes and secondary currents, is developed. This theory is coupled with a simple treatment of flow in bends, an analytically determined bend shape, and the condition of continuity of each grain size range in transport to describe sorting. The theory indicates that the locus of coarse sediment shifts from the inside bank to the outside bank near the bend apex, as is observed.read more
Citations
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Journal ArticleDOI
Hydraulic Stream Ecology: Observed Patterns and Potential Applications
TL;DR: Hydraulic stream ecology provides methods to scale flow in lotic research, which will lead to an increase in replicability and predictability in studies of running water ecosystems.
Journal Article
Closure of "Bedload and Size Distribution in Paved Gravel-Bed Streams"
TL;DR: In this paper, the size distribution of bedload in paved gravel-bed streams was studied and a method for calculating bedload size distribution that accounts for deviation from similarity was developed.
MonographDOI
Mechanics of Sediment Transport
Ning Chien,Zhaohui Wan +1 more
TL;DR: In this paper, the authors present a synthesis of information gleaned from more than 800 papers spanning the fields of hydraulic engineering, mathematics, physics, geology, rheology and chemistry, giving the reader a profound understanding of the present status and direction of the industry's research efforts.
Journal ArticleDOI
Effects of hydraulic roughness on surface textures of gravel-bed rivers
TL;DR: In this article, the authors evaluate textural response by comparing reach-average median grain size (D50) to that predicted from the total bank-full boundary shear stress (t0 bf ), representing a hypothetical reference condition of low hydraulic roughness.
Journal ArticleDOI
Grain size along two gravel-bed rivers: statistical variation, spatial pattern and sedimentary links
Stephen P. Rice,Michael Church +1 more
TL;DR: In this paper, a new set of field data facilitates a detailed analysis of variations in bed material grain size within two confluent gravel-bed rivers in northeastern British Columbia, Canada.
References
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Journal ArticleDOI
A Sediment Transport Model for Straight Alluvial Channels
Frank Engelund,Jørgen Fredsøe +1 more
TL;DR: In this paper, a simple mathematical model for sediment transport in straight alluvial channels is presented, which is based on physical ideas related to those introduced by Bagnold (1954), was originally developed in two steps, the first describing the bed load transport and the second accounting for the suspended load.
Journal Article
Closure of "Bedload and Size Distribution in Paved Gravel-Bed Streams"
TL;DR: In this paper, the size distribution of bedload in paved gravel-bed streams was studied and a method for calculating bedload size distribution that accounts for deviation from similarity was developed.
Journal ArticleDOI
On why gravel bed streams are paved
Gary Parker,Peter C. Klingeman +1 more
TL;DR: In this paper, the authors investigated the effect of road pavement in poorly sorted gravel bed streams downstream of dams and found that the coarse half of the subpavement moves through a reach at a rate near that of the fine half.
Journal ArticleDOI
Flow and bed topography in channel bends
TL;DR: In this paper, a linearized flow equation was proposed to calculate the distribution of the bed shear stress in a meandering channel with fixed side walls, and the results were compared with experiments, concluding that the helical motion introduced by the channel curvature may be fairly well described.
Journal ArticleDOI
Bedload and Size Distribution in Paved Gravel-Bed Streams
TL;DR: In this paper, the authors used field data to study the size distribution of bedload in paved gravel-bed streams and found that all grain size ranges are of approximately equal transportability when the critical condition for breaking the pavement is exceeded.