Results 251 to 260 of about 199,649 (303)

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
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Bed load transport by bed form migration

Acta Geophysica, 2012
A theoretically-based methodology is presented for the determination of bed load transport from high-resolution measurements of bed surface elevations for steady-state or developing dunes. The methodology is based on the general form of the Exner equation for sediment continuity and requires information on the distribution of sediment volume ...
Jochen Aberle, Stephen E. Coleman, Vladimir I. Nikora   +2 more
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BED LOAD TRANSPORT IN THE PRESENCE OF WASH LOAD TRANSPORT

ISH Journal of Hydraulic Engineering, 2007
ABSTRACT Experiments were conducted in a 30 m long 0.204 m wide and 0.5 m deep tilting flume to study the effect of different equilibrium concentration of wash load transport on the transport of uniform and nonuniform sediments through an alluvial channel and on the composition of active bed layer.
N. K. Khullar, U. C. Kothyari, K. G. Ranga Raju   +2 more
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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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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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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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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
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Bed Load Transport of Sediment Mixtures

Journal of Hydraulic Engineering, 1986
Experiments were conducted on alluvial beds of four sediment mixtures having different arithmetic mean diameters and standard deviations. The bed load transport rates of individual fractions were measured. Einstein's method, Proffitt and Sutherland's method, and Misri's method of calculation of the bed load transport of individual fractions for ...
Belle R. Samaga, Kittur G. Ranga Raju, Ramchandra J. Garde   +2 more
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Wave-induced Bed Load Transport

1984
A theory is developed for the velocity and concentration distribution within a moving layer of sediment in oscillatory flow. The bed is assumed flat and consequently all of the sediment moves as bed load. Tests have been carried out in an oscillatory-flow water tunnel.
R. V. Ahilan, J. F. A. Sleath
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