Results 11 to 20 of about 107,957 (205)
Predicting Bed Shear Stresses in Vegetated Channels [PDF]
Water Resources Research, 2018 AbstractShear stresses on vegetated beds play an important role in driving a wide range of processes at the sediment‐water interface, including sediment transport. Existing methods for the estimation of bed shear stress are not applicable to vegetated beds due to the significant alteration of the near‐bed velocity profile and turbulence intensities by ...
Vahid Etminan +2 more
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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
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Energies, 2016 We apply a three-dimensional hydrodynamic model to consider the potential effects of energy extraction by an array of tidal turbines on the ambient near-bed velocity field and local bed shear stress in a coastal channel with strong tidal currents.
Philip A. Gillibrand +2 more
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Theoretical and experimental analysis on the interaction properties between tracks and sediments considering sand content for unmanned underwater tracked bulldozer [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021 The unmanned underwater tracked bulldozer (UUTB) is an indispensable equipment for dredging and cleaning obstacles on the river bed in the flood season.
Yong Li, Dingchang He, Qiaorui Si
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Experimental study on incipient condition of fluidized bed sediment in oscillatory [PDF]
E3S Web of Conferences, 2019 In this paper, the incipient condition of the fluidized bed sediment with different sizes and water contents were experimentally studied in an os- cillatory tunnel made of acrylic boards. One-hundred experimental runs were performed with sediment samples
Wang Rui, Yu Guoliang
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Increasing turbidity in the North Sea during the 20th century due to changing wave climate [PDF]
Ocean Science, 2019 Data on Secchi disc depth (the depth at which a standard white disc lowered into the water just becomes invisible to a surface observer) show that water clarity in the North Sea declined during the 20th century, with likely consequences for marine ...
R. J. Wilson, R. J. Wilson, M. R. Heath
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Bed shear stress measurements over rough fixed and mobile sediment beds in swash flows [PDF]
, 2014 Direct measurements of bed shear stress have been conducted over rough fixed and mobile sediment beds in dambreak driven swash flows. The comparison between rough fixed and mobile bed results indicated the significant importance of grain borne shear ...
Baldock, Tom E., Jiang, Zhonglian
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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
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Measurement of Bed Shear Stress Under Waves
Coastal Engineering 1972, 1972 Shear stress measurements on both smooth and sand roughened beds were carried out in an oscillating water tunnel using a flexurally supported shear plate. The range of simulated wave boundary layers covered practically any situation possible in the field or laboratory.
H.P. Riedel, J.W. Kamphuis, A. Brebner
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Advance in bed shear stress under waves
Shui kexue jinzhan, 2021 The bed shear stress under the action of waves is one of the important essential parameters to estimate the incipient motion and transport of offshore sediment, and its bottom friction effect will also have an impact on the offshore hydrodynamic ...
Yunfeng XIA +4 more
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