Results 211 to 220 of about 17,304 (263)

Sediment Transport, Part I: Bed Load Transport

Journal of Hydraulic Engineering, 1984
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. The equations of motions for a solitary particle are solved numerically to determine the saltation height and particle velocity. Experiments with gravel particles (transported as bed
Leo C van Rijn, Van Rijn Leo C
exaly   +2 more sources

Model for Calculating Bed Load Transport of Sediment

Journal of Hydraulic Engineering, 1989
A bed load transport model based on the mechanics of sediment moving by saltation yields predicted values of bed load flux as a function of boundary shear stress, grain diameter and density. The parameters required to calculate bed load transport (particle velocity, bed load sediment concentration, and the height of the bed load layer) can all be ...
Patricia Wiberg, J Dungan Smith
exaly   +2 more sources

Formulas for the Transportation of Bed Load

Journal of Hydraulic Engineering, 2017
AbstractThis paper introduces new formulas for the transportation of bed load that disputes Einstein’s use of his time factor, tE, in calculating transport rate.
Chong-Hung Zee, Raymond Zee
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +3 more sources

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
openaire   +1 more source

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 ...
openaire   +1 more source

Bed Load Transportation in Alluvial Channels

Journal of the Hydraulics Division, 1971
A new approach for calculation of bed load considering the total energy balance of the flow with mobile bed has been presented in this paper.
Satya P. Garg, A. K. Agrawal, Prem Raj Singh   +2 more
openaire   +1 more source