Results 61 to 70 of about 107,957 (205)

Acoustic measurements of a liquefied cohesive sediment bed under waves [PDF]

Advances in Geosciences, 2014
In this article the response of a cohesive sediment deposit under the action of water waves is studied with the help of laboratory experiments and an analytical model.
R. Mosquera, V. Groposo, F. Pedocchi
doaj   +1 more source

Double-averaged velocity and stress distributions for hydraulically-smooth and transitionally-rough turbulent flows [PDF]

, 2008
Peer ...
Cameron, Stuart M., Coleman, Stephen E., Nikora, Vladimir I.   +2 more
core   +1 more source

The Near‐Bed Flow Structure and Bed Shear Stresses Within Emergent Vegetation

Water Resources Research, 2023
AbstractThe structure of the bottom boundary layer (BBL) in aquatic flows influences a range of biophysical processes, including sediment transport, hyporheic exchange, and biofilm formation. While the structure of BBL above bare sediment beds has been well studied, little is known about the complex near‐bed flow structure within aquatic vegetation. In
M. Conde‐Frias, M. Ghisalberti, R. J. Lowe, M. Abdolahpour, V. Etminan   +4 more
openaire   +1 more source

Variability of Internally Generated Turbulence in an Estuary, from 100 Days of Continuous Observations [PDF]

, 2009
We present detailed observations of internally generated turbulence in a sheared, stratified natural flow, as well as an analysis of the external factors leading to its generation and temporal variability.
Orton, P. M., Visbeck, Martin
core   +1 more source

The effect of coarse gravel on cohesive sediment entrapment in an annular flume [PDF]

Proceedings of the International Association of Hydrological Sciences, 2015
While cohesive sediment generally represents a small fraction (16 Pa), cohesive materials trapped within the gravel bed will be entrained and transported into the Glenmore Reservoir, where sediment-associated nutrients may pose treatment challenges to ...
K. Glasbergen, M. Stone, B. Krishnappan, J. Dixon, U. Silins   +4 more
doaj   +1 more source

Evolution of a non-cohesive granular bed subject to a succession of erosive turbidity currents [PDF]

, 2006
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, June 2006.Includes bibliographical references (leaf 18).An experiment was performed to study the evolution of a non-cohesive granular bed subject to a succession of ...
Rangel, Roberto Carlos
core  

Bed shear stress measurements in dam break and swash flows [PDF]

, 2006
A novel shear plate was used to make direct bed shear stress measurements in laboratory dam break and swash flows on smooth, fixed, impermeable beds. The pressure gradient due to the slope of the fluid free-surface across the plate was measured using ...
Baldock, T. E., Barnes, M. P.
core  

Effect of near‐bed turbulence on chronic detachment of epilithic biofilm: Experimental and modeling approaches. [PDF]

, 2010
The biomass dynamics of epilithic biofilm, a collective term for a complex microorganism community that grows on gravel bed rivers, was investigated by coupling experimental and numerical approaches focusing on epilithic biofilm‐flow interactions.
Ahmed Kettab, Asaeda, Asaeda, Auer, Belkhadir, Bentham, Biggs, Biggs, Borchardt, Bothwell, Boulêtreau, Boulêtreau, Capdeville, Cheng, Flipo, Frédéric Garabétian, Frédéric Y. Moulin, Fuller, Ghosh, Godillot, Hamlyn, Hart, Hondzo, Horner, Horner, Jeffrey, José Miguel Sánchez-Pérez, Kliment, Krause, Labiod, Lekfir, Lock, Lopez, Lopez, Mayer, McIntire, McLean, Mignot, Minshall, Momo, Moulin, Moulin, Myriam Graba, Nepf, Nezu, Nielsen, Nikora, Nikora, Nikora, Nikora, Nikora, Nikora, Olivier Eiff, Py, Reiter, Reiter, Reiter, Sabine Sauvage, Saravia, Stevenson, Stevenson, Stéphanie Boulêtreau, Uehlinger, Wilcock, Winterbourn, Xu   +65 more
core   +2 more sources

Predicting Equilibrium Bed Morphology of Large‐Scale Meandering Rivers Using a Novel LES‐Trained Machine Learning Approach

Journal of Advances in Modeling Earth Systems
Flood‐induced deformation of the bed topography of fluvial meandering rivers could lead to riverbank displacement, infrastructure failure, and the propagation of scour and deposition features.
Zexia Zhang, Mehrshad Gholami Anjiraki, Hossein Seyedzadeh, Fotis Sotiropoulos, Xiaolei Yang, Ali Khosronejad   +5 more
doaj   +1 more source

A Numerical Approach to Analyzing Shallow Flows over Rough Surfaces

Fluids
The hydraulic characteristics (such as velocity profiles, near-bed velocity profile, bed shear stress, and resistance coefficients) of shallow flows over rough surfaces were investigated using numerical simulations.
M. Nasimul Chowdhury, Abdul A. Khan, Oscar Castro-Orgaz   +2 more
doaj   +1 more source