Results 211 to 220 of about 16,343 (263)

Fractionwise calculation of bed load transport

Journal of Hydraulic Research, 1996
Extensive experiments conducted by the writers on fractional bed load transport rates are reported. These data as well as those available from other sources, covering wide range of flow conditions and sediment nonuniformity, have been analysed. Firstly, the semi-theoretical model proposed by Misri et al.
P.L Patel, K.G. Ranga Raju
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Deterministic Uncertainty in Bed Load Transport

Journal of Hydraulic Engineering, 1999
A methodology for detecting nonlinear dynamics in bed load transport rate time series and testing the ability of distribution functions to characterize rate variations is outlined. The Kolmogorov entropy of a time series consisting of >10,000 bed load transport measurements made in a laboratory flume indicates that >80% of the variability can be ...
Basil Gomez, Jonathan D. Phillips
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Bed Load Transport in a River Meander

Water Resources Research, 1984
Bed load transport in Muddy Creek, Wyoming, a sand‐bedded meandering river with equilibrium bottom topography, was found to consist of a zone of maximum sediment flux that shifted across the channel from near the inside bank in the upstream part of the bend toward the pool at the minimum radius of curvature.
William E. Dietrich, J. Dungan Smith
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On transport of bed load by waves

Journal of Hydraulic Research, 1989
The Bagnold's energy concept for sediment transport is used to estimate the volume of sediment mobilized by strong wave action. The results are compared with wave tunnel data for sheet flow conditions and with bed load formulae by Sleath and by Madsen and Grant. The predictions differ excessively and agreement with wave tunnel data is poor. The results
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Nonlinear mechanism of bed load transport

Transactions of Tianjin University, 2009
From the group movement of the bed load within the bottom layer, details of the nonlinear dynamic characteristics of bed load movement are discussed in this paper. Whether the sediment is initiated into motion corresponds to whether the constant term in the equation is equal to zero.
Xu, H, Ng, CO, Bai, Y
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The transportation of bed‐load by streams

Eos, Transactions American Geophysical Union, 1934
The problem of bed‐load movement has been studied by a number of engineers and scientists during the past seventy years and a considerable amount of data has been published. The increasing use of river‐ and harbor‐models has accentuated its importance because of the necessity for selecting a material capable of being moved which will not at the same ...
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An Expression for Bed-Load Transportation

Journal of the Hydraulics Division, 1963
A formula for the calculation of bed-load transportation per unit time and per unit width of the flow is suggested. This formula is valid for steady and uniform turbulent flow and for bed material consisting of grains of equal size and shape. It is assumed that the laminar sublayer of the turbulent flow is smaller than the size of the grains, and that ...
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Formulas for the Transportation of Bed Load

Transactions of the American Society of Civil Engineers, 1942
A method for the representation of bed-load data is given in this paper. The method is based on the conception that bed-load transportation is the movement of bed particles, as governed by the laws...
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BED LOAD TRANSPORT OF BIMODAL SEDIMENTS

ISH Journal of Hydraulic Engineering, 2009
ABSTRACT Computation of bed load transport of bimodal sediments is a complicated task due to complex interaction of the grain sizes in two modes. The data on bimodal sediments from the previous investigations is used to check the performance of existing method which is based on data of unimodal and weakly bimodal sediments (Patel et al., 1996). Further,
P. L. Patel, Mayank Jain
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Bed-Load Transport

2014
The mode of sediment transport where the sediment particles slide, roll, or travel in succession of low jumps close to the bed is known as bed-load transport. In this chapter, theories of bed-load and formulations to predict the bed-load transport rate are presented. The pioneering attempt to predict the bed-load transport rate was due to MP du Boys in
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