Is the critical Shields stress for incipient sediment motion dependent on channel-bed slope? [PDF]
, 2008 Data from laboratory flumes and natural streams show that the critical Shields stress for initial sediment motion increases with channel slope, which indicates that particles of the same size are more stable on steeper slopes.
Dietrich, William E. +2 more
core +1 more source
Universal Velocity Distribution for Smooth and Rough Open Channel Flows
Journal of Applied Fluid Mechanics, 2013 The Prandtl second kind of secondary current occurs in any narrow channel flow causing velocity dip in the flow velocity distribution by introducing the anisotropic turbulence into the flow.
Jaan Hui Pu
doaj
Depth-averaged velocity and bed shear stress in unsteady open channel flow over rough bed
E3S Web of Conferences, 2018 Very few studies have been carried out in the past in estimating depth-averaged velocity and bed shear stress in unsteady flow over rough beds. An experiment is thus conducted to investigate the vertical and lateral velocity profiles under unsteady flow ...
Khuntia Jnana Ranjan +3 more
doaj +1 more source
Air-water flow in hydraulic jumps on macro-roughness [PDF]
, 2016 Hydraulic jumps are highly complex three dimensional flows with strong energy dissipation and air bubble entrainment associated with intense mixing.
Chanson, H., Felder, S.
core
Measurement and modeling of solitary wave induced bed shear stress over a rough bed [PDF]
, 2012 Bed shear stresses generated by solitary waves were measured using a shear cell apparatus over a rough bed in laminar and transitional flow regimes (~7600 < Re < ~60200).
Baldock, Tom E., Seelam, Jaya Kumar
core +1 more source
On modeling chronic detachment of periphyton in artificial rough, open channel flow [PDF]
, 2012 Periphyton communities, which are native to river beds, serve as a functional indicator of river health but remain one of the least-studied communities despite the significant increase in the examination of aquatic microbial communities in recent years ...
Graba, Myriam +3 more
core +2 more sources
Bed Shear Stress and Near‐Bed Flow Through Sparse Arrays of Rigid Emergent Vegetation
Water Resources ResearchVegetation is an essential component of natural rivers and has significant effects on flow and morphodynamic processes. Although progress has been made in characterizing flow resistance in vegetated flows, the impact of vegetation on bed shear stress, a ...
J. Aliaga, J. Aberle
doaj +1 more source
Erosion of fine sediments from a rough bed
E3S Web of Conferences, 2018 Gravel beds in river systems represent important aquatic habitats, which may be endangered by the introduction of large amounts of fine sediments. In order to better understand the interaction between fine sediments and coarse immobile beds in sediment ...
Trevisson Michele, Eiff Olivier
doaj +1 more source
An Experimental Study of Air-water Flows in Hydraulic Jumps with Channel Bed Roughness [PDF]
, 2016 Hydraulic jumps occur naturally when supercritical flow transitions into subcritical flows in a sudden, extremely turbulent three-dimensional process. Research of hydraulic jumps is a challenge and to date turbulence and air-water flow measurements are ...
Chanson, Hubert, Felder, Stefan
core
Interaction between local hydrodynamics and algal community in epilithic biofilm [PDF]
, 2013 Interactions between epilithic biofilm and local hydrodynamics were investigated in an experimental flume. Epilithic biofilm from a natural river was grown over a 41 day period in three sections with different flow velocities (0.10, 0.25 and 0.40 m s-¹ ...
Graba, Myriam +5 more
core +4 more sources