Results 1 to 10 of about 107,957 (205)
Modeling Bed Shear Stress Distribution in Rectangular Channels Using the Entropic Parameter [PDF]
Entropy, 2020 The evaluation of bed shear stress distribution is fundamental to predicting the transport of sediments and pollutants in rivers and to designing successful stable open channels. Such distribution cannot be determined easily as it depends on the velocity
Domenica Mirauda, Maria Grazia Russo
doaj +2 more sources
Study on oscillation effect of wind power pile foundation on local scour [PDF]
Scientific ReportsThe pile-oscillation effect on foundation local scour cannot be neglected in the large-scale offshore wind turbine. To reveal the fluid dynamics and its influence on the bed shear stress of an oscillating pile foundation, the VOF two-phase flow model is ...
Zhenzhou Zhao +7 more
doaj +2 more sources
A bed load transport equation based on the spatial distribution of shear stress – Oak Creek revisit [PDF]
Earth Surface Dynamics, 2020 Bed load transport formulations for gravel-bed rivers are often based on reach-averaged shear stress values. However, the complexity of the flow field in these systems results in wide distributions of shear stress, whose effects on bed load transport are
A. Monsalve +4 more
doaj +1 more source
Numerical Investigation of Bed Shear Stress and Roughness Coefficient Distribution in a Sharp Open Channel Bend [PDF]
Journal of Applied Fluid Mechanics, 2023 The helical flow leads to the redistribution of the bed shear stress and roughness coefficient in open-channel bends, influencing the transport of sediment and riverbed evolution process.
P. Hu, M. Yu
doaj +1 more source
Fluctuations of Turbulent Bed Shear Stress [PDF]
Journal of Engineering Mechanics, 2003 With the assumption that the bed shear stress fluctuates in a lognormal fashion, the probability density function (PDF) of the standardized bed shear stress is derived as a function of the relative shear stress intensity. The PDF is more skewed with larger relative intensities, but approaches a Gaussian function when the relative intensity is small ...
Cheng, Nian-Sheng +1 more
openaire +2 more sources
Experimental Study of Bed Shear Stress in Straight Channels Covered with Dunes of Different Sizes [PDF]
علوم آب و خاک, 2023 The formation of bed form in alluvial rivers due to sediment transport has a significant effect on the hydraulic parameters of the flow such as bed shear stress.
M. Badzanchin +2 more
doaj
Note on estimating bed shear stress caused by breaking random waves
Oceanologia, 2021 This note presents a method of how the bed shear stress caused by breaking random waves on slopes can be estimated. This is obtained by adopting the Sumer et al. (2013) bed shear stress formula due to spilling and plunging breaking waves on hydraulically
Dag Myrhaug, Muk Chen Ong
doaj +1 more source
BED SHEAR STRESS IN UNSTEADY FLOW [PDF]
Coastal Engineering Proceedings, 2011 Standard engineering methods of estimating bed shear stress using friction factors can fail spectacularly in unsteady hydrodynamic conditions. This paper demonstrates this fact using direct measurements of bed shear stresses under irregular waves using a shear plate apparatus.
Paul Andrew Guard +2 more
openaire +1 more source
Experimental Study Of The Effect Of The Ripple Bed Forms On The Bed Shear Stress [PDF]
علوم و مهندسی آبیاری, 2015 Interaction between water flow and bed erodibility, which is associated with sediment transport and creat bed forms. Ripples are the smallest of the bed forms.
Hosein Samadi-Boroujeni +3 more
doaj +1 more source
Journal of Hydrology and Hydromechanics, 2023 The present study aims to focus the turbulent flow characteristics over arrays of submerged boulders in a gravel bed stream. Round shaped boulders of diameter, Dc = 6 cm were staggered over a gravel bed stream (d50 = 4 cm) with varying boulder-to-boulder
Datta Akash, Das Ratul, Majumder Mrinmoy
doaj +1 more source