Journal ArticleDOI
Flow Resistance in Gravel-Bed Rivers
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TLDR
In this article, a general approach for the estimation of the Darcy-Weisbach friction factor is presented and independent field data indicates that the method can be successfully applied to predict the resistance to uniform flow in gravel-bed rivers.Abstract:
The resistance to uniform flow in straight gravel-bed rivers is basically dependent on the flow geometry, the cross-sectional variation in roughness heights, and the roughness height of the graded gravel bed sediment. The effect of these factors on the resistance to flow is evaluated and a general approach for the estimation of the Darcy-Weisbach friction factor is presented. Independent field data indicates that the method can be successfully applied to predict the resistance to uniform flow in gravel-bed rivers.read more
Citations
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Journal ArticleDOI
Sediment transport; Part I, Bed load transport
TL;DR: In this article, a method is presented which enables the computation of the bed-load transport as the product of the saltation height, the particle velocity and the bed load concentration.
Journal ArticleDOI
A systematic analysis of eight decades of incipient motion studies, with special reference to gravel-bedded rivers
TL;DR: In this article, the authors used data compiled from eight decades of incipient motion studies to calculate dimensionless critical shear stress values of the median grain size, t* c 50.
Journal ArticleDOI
Flood inundation modelling
TL;DR: A review of state-of-the-art empirical, hydrodynamic and simple conceptual models for determining flood inundation is presented in this paper, where guidance is provided for selecting the most suitable method/model for solving practical flood related problems, taking into account the specific outputs required for the modelling purpose, the data available and computational demands.
Journal ArticleDOI
Stable Channels with Mobile Gravel Beds
Richard D. Hey,Colin R. Thorne +1 more
TL;DR: In this article, the authors presented regime type equations for mobile gravel-bed rivers based on data obtained from 62 stable gravel bed river reaches in the United Kingdom, and applied multiple regression techniques to derive equations relating reach average and riffle values of width, mean and maximum depth, slope, velocity, sinuosity and ruddle spacing to bank full discharge, bed and bank material characteristics, valley slope, bank vegetation type and an independent estimate of bank full bed load load transport rates.
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Reanalysis and Correction of Bed-Load Relation of Meyer-Peter and Müller Using Their Own Database
Miguel Wong,Gary Parker +1 more
TL;DR: In this paper, an improved correction of the boundary shear stress due to sidewall effects has been proposed, which is the most parsimonious form of the bed-load relation of Meyer-Peter and Muller that is dictated by their own data set.