Results 51 to 60 of about 2,577,284 (154)

Non-Equilibrium Scour Evolution around an Emerged Structure Exposed to a Transient Wave

Journal of Marine Science and Engineering
The present study evaluates the performance of two numerical approaches in estimating non-equilibrium scour patterns around a non-slender square structure subjected to a transient wave, by comparing numerical findings with experimental data.
Deniz Velioglu Sogut, Erdinc Sogut, Ali Farhadzadeh, Tian-Jian Hsu   +3 more
doaj   +1 more source

Sorting of sand grains around submarine pipelines under the oblique wave

Shui kexue jinzhan, 2016
Non-equilibrium sediments transport near the submarine pipeline results in local scour, thus endangering the operation of the pipeline. To investigate the sorting of sand grains in local scour hole under regular wave action, an experimental study is ...
CHENG Yongzhou, LU Xianhe, YI Lei, HU Youchuan, LI Xiaochao   +4 more
doaj   +1 more source

Evaluation of empirical equations for scour downstream grade-control weirs

, 2018
The grade control structures are frequently adopted in the Mountain Rivers and streams to prevent severe bed degradation and channel incision. These structures are constructed as a staircase-like sequence of transverse weirs or bed sills.
Wang, L, Lu Wang, Bruce W. Melville, Dawei Guan, Guan, D, Melville, Bruce   +5 more
core   +1 more source

Experimental study on the optimal spur dike shape under downward seepage

Water Science
The successful stabilization of riverbanks and the construction of sustainable foundations, extensive knowledge of the scour process and accurate assessment of scour depth around spur dikes are required.
Harish kumar Patel, Bimlesh Kumar
doaj   +1 more source

Scour holes evolution.

, 2019
Evolution of the scour holes extent during the 5 years: green, blue and red polygons indicate the extent of the scour holes in the years 2011, 2013 and 2016, respectively.
Fantina Madricardo (2544946), Stefano Fogarin (4481311), Aleksandra Kruss (2564941), Nicola Marco Pizzeghello (7507271), Emanuela Molinaroli (464284), Antonio Petrizzo (7507268), Luigi Sinapi (7507274), Carlotta Toso (7507265), Fabio Trincardi (537480)   +8 more
core   +1 more source

Assessment of the impacts of local scour at bridge piers on the stability of ice jams – An experimental study

Hydrology Research
Local scour at the bottom of bridge piers further affects the stability of ice jams. In this study, the experimental study on the influence of local scour on the stability of ice jams at the pier was carried out, and the test conditions of different ...
Zhixing Hou, Zhipeng Zhong, Jun Wang
doaj   +1 more source

Flow and likely scour around three dimensional seabed structures evaluated using RANS CFD

, 2007
When a structure is placed on the seabed, tidal or other marine current induce areas of flow acceleration and deceleration. This may result in movement of the seabed substrate (often sand) near the structure.
Turnock, S.R., de Hauteclocque, G., Lambkin, D.O., Dix, J.   +3 more
core   +1 more source

The effects of ice-water discharge ratio and flow Froude number on local scour around tandem double piers and ice jam thickness in an S-shaped channel

Journal of Hydrology and Hydromechanics
In cold regions, bridge piers in rivers can alter flow characteristics and influence the formation and evolution of ice jams, complicating the local scour around the piers and the distribution of ice jam thickness.
Dong Shihao, Wang Jun, Wang Tong, Sui Jueyi   +3 more
doaj   +1 more source

Propagation modes of 3D scour below a submarine pipeline in oblique steady currents and waves [PDF]

, 2016
This paper presents experimental results on 3D scour propagation along a pipeline under oblique-incidence currents and waves. Different modes of 3D scour propagation were discovered after the local scour was initiated below the pipeline.
Cheng L, 臧志鹏, Tang G
core   +2 more sources

Morphology evolution of vegetation-covered loess gully heads induced by hydraulic and gravitational erosion

International Soil and Water Conservation Research
Gully heads suffer hydraulic and gravitational erosion triggered by rainstorms. However, how hydraulic and gravitational erosion affect the morphology evolution of the vegetation-covered loess gully heads is unclear.
Hongliang Kang, Wenlong Wang, Liangna Li, Lei Han   +3 more
doaj   +1 more source