Results 171 to 180 of about 107,957 (205)

Bed-Load Transport at High Shear Stress

Journal of the Hydraulics Division, 1966
High bed shear stresses can be obtained if pressurized conduits are used, and the results of such experimentation are presented herein. In this range existing transport equations diverge rapidly, and the present work indicates that for sand the Einstein bed-load function is not applicable at high shear stress.
openaire   +1 more source

Bed shear stress measurements for vims Sea Carousel

Marine Geology, 1995
Abstract The results of bed shear stress measurements for vims Sea Carousel under clear-water and flat-bed conditions are presented. The measurements were made using a flush mounted hot film shear stress sensor mounted on the bottom of a laboratory version of the vims Sea Carousel.
Jerome P.-Y. Maa, C.-H. Lee, F.J. Chen
openaire   +1 more source

Numerical Modelling of Bed Shear Stress in OpenFOAM

2019
In coastal zones, erosion is the major threat to the livelihood as it leads to the water inundation into the human premises. Sediment transport results in erosions causes morphological changes and also affects the coastal ecosystem. The sediment transport processes are primarily driven by bed shear stress induced by waves and currents.
Nandakumar Visuvamithiran, V. Sriram, Jaya Kumar Seelam   +2 more
openaire   +1 more source

Seabed Shear Stress Spectrum for Very Rough Beds

Volume 4: Ocean Engineering; Offshore Renewable Energy, 2008
The spectrum of seabed shear stresses at beds with large roughness beneath ocean surface waves in finite water depth is derived by using the wave friction factor for large roughness. It is expressed in terms of the transfer function between the waves at the surface and the shear stress at the bed, and the wave spectrum in finite water depth, which is ...
Dag Myrhaug, Lars Erik Holmedal
openaire   +1 more source

Improvements on bed‐shear stress formulation for pier scour computation

International Journal for Numerical Methods in Fluids, 2011
AbstractThis paper introduces an improved formula for the bed‐shear stress by applying the vorticity effect and its application in a 3D flow and sediment model to estimate scouring around bridge piers. Up to now, the sediment transport formulae used for computing pier scour were developed based on the general scouring in unobstructed flow.
Abbasnia, Amir Hosein, Ghiassi, Reza
openaire   +2 more sources

River bed deformation computed from shear stress

1998
Les déformations des différentes sections en travers ont été calculées en couplant un modèle hydraulique 1D et un modèle pour la distribution transversale de la contrainte de cisaillement. L'hypothèse réside dans le lien direct entre l'érosion ou le dépôt et la contrainte de cisaillement. La répartition de la contrainte de cisaillement est calculée par
Khodashenas, S.R., Paquier, André, Gay, B.   +2 more
openaire   +1 more source

Bed shear stress distribution over beach profiles

1998
The mechanism of cross-shore movements of the bottom sand and the local bed movement around marine structures can be better understood by defining the bed shear stress distribution along the bed. In order to obtain the variation of the bed shear stress over rigid uniform and barred beaches from intermediate to shallow water conditions, a series of ...
Çevik, Esin, Kapdasli, Sedat, Yüksel, Yalçın   +2 more
openaire   +1 more source

Bed Shear Stresses and Bed Shear Velocities Ubiquitous Variables in River Hydraulics

2017
Magdalena M. Mrokowska, Paweł M. Rowiński   +1 more
openaire   +1 more source

INSTANTANEOUS BED SHEAR STRESSES IN SHOALING WAVES

Coastal Engineering 2006, 2007
E. Terrile, A.J.H.M. Reniers, M.J.F. Stive   +2 more
openaire   +1 more source

Bed Shear Stress and Scour Around Coastal Structures

Coastal Engineering 1994, 1995
B. M. Sumer, J. Fredsøe, N. Christiansen, S. B. Hansen   +3 more
openaire   +1 more source