Statistics and characteristic scales for bed load in a channel flow with sidewall effects

2010 ◽  
Vol 58 (6) ◽  
pp. 1072-1093 ◽  
Author(s):  
Alessio Radice ◽  
Francesco Ballio ◽  
Vladimir Nikora
Keyword(s):  
Channel Flow ◽  
Bed Load ◽  
Sidewall Effects ◽  
Characteristic Scales

EFFECT OF BED LOAD ON TURBULENT STRUCTURE IN AN OPEN CHANNEL FLOW

1998 ◽  
Vol 42 ◽  
pp. 859-864
Author(s):  
Iehisa NEZU ◽  
Kouki ONITSUKA ◽  
Masa-aki KURATA
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Turbulent Structure ◽  
Bed Load

Bed-load discharge of a channel flow with wind waves

1988 ◽  
Vol 22 (9) ◽  
pp. 551-553
Author(s):  
K. F. Tabukashvili
Keyword(s):  
Channel Flow ◽  
Wind Waves ◽  
Bed Load ◽  
Load Discharge

scholarly journals Simulation of bed load transport in turbulent open channel flow

PAMM ◽  
2012 ◽  
Vol 12 (1) ◽  
pp. 505-506 ◽  
Author(s):  
Bernhard Vowinckel ◽  
Jochen Fröhlich
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Bed Load ◽  
Load Transport ◽  
Bed Load Transport

Accelerations and Mean Trajectories in Turbulent Channel Flow

1960 ◽  
Vol 82 (4) ◽  
pp. 961-968 ◽  
Author(s):  
S. Irmay
Keyword(s):  
Channel Flow ◽  
Transition Layer ◽  
Turbulent Channel Flow ◽  
Bed Load ◽  
Dune Sand ◽  
Flow Equations ◽  
River Bed ◽  
Sediment Transportation ◽  
Sand Movement ◽  
Fluid Particles

The author shows that even in steady uniform turbulent channel flow there exist on the average mean accelerations and forces acting on fluid particles. These are computed from the flow equations and Laufer’s data. There exist both normal and axial mean accelerations, the latter highly negative (15g and more) in the dissipative “transition” layer near the wall, elsewhere constant. There most river bed-load and dune sand movement occurs. Mixing and sediment transportation are explained dynamically. Mean shear is shown to exist mainly in the dissipative layer. Mean turbulent trajectories are defined.

Unsteady flow in straight alluvial streams. Part 2. Transition from dunes to plane bed

1981 ◽  
Vol 102 ◽  
pp. 431-453 ◽  
Author(s):  
Jørgen Fredsøe
Keyword(s):  
Shear Stress ◽  
Suspended Sediment ◽  
Channel Flow ◽  
Laboratory Experiments ◽  
Effect Of Temperature ◽  
Bed Load ◽  
Bed Shear Stress ◽  
Temperature Variations ◽  
Unsteady Channel Flow ◽  
High Sediment

The effect of suspended sediment on the modification of individual dunes in unsteady channel flow is analyzed. The model is an extension of that developed by Fredsøe (1979), in which the change of the dune dimensions was analyzed assuming that the transport of sediment mainly occurs as bed load. By including suspended sediment, it is possible to describe dune behaviour at high sediment transport rates, for which the dunes are washed out, so the bed at sufficiently high bed shear stress becomes plane. The model is compared with laboratory experiments and the agreement is reasonable. The effect of temperature variations on dune dimensions is incorporated in the analysis.

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