Results 21 to 30 of about 39,640 (314)

Modeling of local scour depth downstream hydraulic structures in trapezoidal channel using GEP and ANNs

open access: yesAin Shams Engineering Journal, 2013
Local scour downstream stilling basins is so complex that it makes it difficult to establish a general empirical model to provide accurate estimation for scour depth. Lack estimation of local scour can endanger to stability of hydraulic structure and can
Yasser Abdallah Mohamed Moussa
doaj   +1 more source

Erosion caused by propeller jets in a low energy harbour basin [PDF]

open access: yes, 2017
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Hydraulic Research on January, 2017, available online at: http://www.tandfonline.com/10.1080/00221686.2016.1252801Field data of a harbour basin are compared ...
García León, Manuel   +4 more
core   +2 more sources

Localized Turbulent Flows on Scouring Granular Beds [PDF]

open access: yesPhysical Review Letters, 2005
In many applications a sustained, localized turbulent flow scours a cohesionless granular bed to form a pothole. Here we use similarity methods to derive a theoretical formula for the equilibrium depth of the pothole. Whereas the empirical formulas customarily used in applications contain numerous free exponents, the theoretical formula contains a ...
Gioia, Gustavo, Bombardelli, Fabian A.
openaire   +3 more sources

Local scour around a bridge pier under ice-jammed flow condition – an experimental study

open access: yesJournal of Hydrology and Hydromechanics, 2021
The appearance of an ice jam in a river crucially distorts local hydrodynamic conditions including water level, flow velocity, riverbed form and local scour processes.
Wang Jun   +5 more
doaj   +1 more source

Equilibrium Scour-Depth Prediction around Cylindrical Structures [PDF]

open access: yes, 2017
Offshore gravity base foundations (GBFs) are often designed with complex geometries. Such structures interact with local hydrodynamics, creating an adverse pressure gradient that is responsible for flow and scour phenomena, including the bed shear stress
Harris, JM   +3 more
core   +1 more source

Evaluation of local scour around bridge piers for various geometrical shapes using mathematical models

open access: yesAin Shams Engineering Journal, 2018
Bridges are one of the important structures across the Nile River; these bridges may be subjected to collapse if there is no monitoring or safety precaution for local scour during high floods.
Ahmed Moustafa Ahmed Moussa
doaj   +1 more source

Local scour at abutments: A review

open access: yesSadhana, 2004
Failure of bridges due to local scour has motivated many investigators to explore the causes of scouring and to predict the maximum scour depth at abutments. In this paper, a detailed review of the up-to-date work on scour at abutments is presented including all possible aspects, such as flow field, scouring process, parameters affecting scour depth ...
Abdul Karim Barbhuiya, Subhasish Dey
openaire   +2 more sources

Extremes in dune preservation: controls on the completeness of fluvial deposits [PDF]

open access: yes, 2015
Understanding sedimentary preservation underpins our ability to interpret the ancient sedimentary record and reconstruct palaeoenvironments and palaeoclimates.
Amsler, Mario Luis   +7 more
core   +1 more source

On local scouring downstream small water structures

open access: yesPeerJ, 2020
Background In order to regulate water flow, hydraulic structures such as weirs or checks, frequently equipped with gates, are used. Water can flow below or over the gate or, simultaneously, over and below the gate.
Kiraga, Marta, Popek, Zbigniew
openaire   +3 more sources

Laboratory Study of Local Scour Around an Array of Pile Groups in Clear-Water Scour Conditions

open access: yesJournal of Marine Science and Engineering
Current-induced local scour around pile groups weakens the capacity of structures. In this paper, experimental tests of local scour around an array of 5 × 5 pile groups were conducted in a steady current in a hydraulic flume.
Ming Gong   +7 more
doaj   +1 more source

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