Results 41 to 50 of about 2,577,284 (154)

Experimental study on local scour around the submerged vertical circular cylinder under solitary wave action

Shui kexue jinzhan, 2019
Solitary waves can cause intense sediment movement in the coastal area,resulting in local scour around the offshore structures that use submerged pile foundations,and seriously affecting the stability of offshore structures.
CHENG Yongzhou, JIANG Song, GONG Weiliang, TANG Wen, HUANG Xiaoyun, XIA Bo   +5 more
doaj   +1 more source

Long-term scouring effects on the lateral loading behaviour of monopiles using field monitoring data and finite element modelling

Applied Ocean Research
Scour of the seabed induced by currents and waves poses a critical threat to the serviceability and lifespan of offshore wind turbines. Despite its significance, the mechanisms and temporal evolution of offshore scour remain insufficiently understood ...
Qiang Li, Jiayi Ming, Kai Wen, Kangyu Wang, Qunchao Ma, Xinglei Cheng, Yuting Zhang   +6 more
doaj   +1 more source

Detecting scour and liquefaction using OBS sensors [PDF]

, 2016
This work examined the performance of Optical Back-Scatter (OBS) sensors for detecting sediment movement around a model subsea structure. Three types of tests were conducted using a circular cylinder model equipped with 16 OBS sensors.
Cheng, L., Draper, S., Zhao, Ming (R16667), Draper, Scott, Tang, G., Zhao, M., Tang, Guoqiang, An, H., An, Hongwei, Cheng, Liang   +9 more
core  

Numerical Simulation of Scour Depth and Scour Patterns in Front of Vertical-Wall Breakwaters Using OpenFOAM

Journal of Marine Science and Engineering, 2020
An advanced coupled numerical model was developed and implemented in the present work, describing the scour patterns and predicting the scour depth in front of vertical-wall breakwaters. It consists of two independent models, a hydrodynamic Computational
Nikolaos Karagiannis, Theophanis Karambas, Christopher Koutitas   +2 more
doaj   +1 more source

Scour development around structures with non-uniform cylindrical geometries [PDF]

, 2016
Many offshore foundations are composed of non-uniform cylindrical geometries such as cones and different diameter composite cylinders. However, little is known about how these types of structure respond with regards to scour under the forcing of a ...
R Whitehouse, Harris, JM, Simons, RR, Harris, J., Tavouktsoglou, N., Whitehouse, R.J.S., N Tavouktsoglou, Tavouktsoglou, NS, Simons, R., J Harris, Whitehouse, RJS, R Simons   +11 more
core   +1 more source

Influence of flow unsteadiness on local scour at bridge piers: An energy-based perspective

International Journal of Sediment Research
Local scour at piers is a major cause of bridge failures worldwide. While most existing studies assume steady flow conditions, actual flood events are inherently unsteady, with distinct rising and falling limbs that significantly modify scour dynamics ...
Qigang Chen, Jiacheng Li, Pengfei Li, Qiang Zhong   +3 more
doaj   +1 more source

Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars

Alexandria Engineering Journal, 2016
In this paper, the effects of different widths and lengths of collar around bridge abutment on local scour depth are studied numerically and experimentally.
T. Hemdan Nasr-Allah, Yasser Abdallah Mohamed Moussa, G. Mohamed Abdel-Aal, A. Shawky Awad   +3 more
doaj   +1 more source

Clear-water scour at comparatively large cylindrical piers [PDF]

, 2013
New long-duration clear-water scour data were collected at single cylindrical piers with the objective of investigating the effect of sediment coarseness, Dp=D50 (Dp = pier diameter; D50 = median grain size) on the equilibrium scour depth and improving ...
Lança, Rui, Fael, Cristina, Cristina S. Fael, Rui M. Lança, Rodrigo J. Maia, João P. Pêgo, Rui M. Lança, Maia, Rodrigo, Cardoso, António, António H. Cardoso, Pêgo, João   +10 more
core   +1 more source

Modeling Monopile Scour in a Tidal-Dominated Coastal Sea: a GFD-CFD coupled framework and real-world application

Engineering Applications of Computational Fluid Mechanics
Local scour around monopile foundations poses a critical challenge for offshore wind turbines in tidal–dominated coastal seas, where hydrodynamics span multiple scales from kilometre-scale tidal currents to metre-scale horseshoe vortices.
Jialin Pang, Zaiyang Zhou, Xiaodao Wei, Jianzhong Ge   +3 more
doaj   +1 more source

Lateral-Loading Response of an Offshore Wind Turbine Tetrapod Piled Jacket Foundation Considering Local Scour-Hole Morphology

Journal of Marine Science and Engineering
Tetrapod piled jacket foundations, widely adopted for large-capacity offshore wind turbines, are frequently affected by scour, which substantially alters their lateral mechanical responses.
Minsi Liang, Zhijie Ding, Hanbo Zheng, Panpan Shen, Aiwu Yang, Hao Zhang   +5 more
doaj   +1 more source