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Changjing Fu, Yangming Xu and Tianlong Zhao
One of the major geological hazards that can cause harm to long-distance oil and gas pipelines are water-induced disasters. These disasters are quite common and widespread. Pipelines that cross river channels are at a higher risk of facing damage due to ...
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Ke Hu, Xinglan Bai and Murilo A. Vaz
To investigate the different influencing characteristics of local scour around submarine pipelines, hydrodynamic and sediment transport two-dimensional models based on Flow-3D are used to numerically simulate the local scour around the pipeline under ste...
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Yehui Zhu, Liquan Xie, Tsunming Wong and Tsung-Chow Su
The three-dimensional scour beneath a partially-buried pipeline in regular waves was visualized using a miniature camera installed in a transparent pipeline. The scour mechanism was analyzed based on the results. Scour development was observed to start a...
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Zhiyong Zhang, Yakun Guo, Yuanping Yang, Bing Shi and Xiuguang Wu
In nearshore regions, bidirectional tidal flow is the main hydrodynamic factor, which induces local scour around submarine pipelines. So far, most studies on scour around submarine pipelines only consider the action of unidirectional, steady currents and...
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Jun Huang, Guang Yin, Muk Chen Ong, Dag Myrhaug and Xu Jia
The present study carries out two-dimensional numerical simulations to investigate scour beneath a single pipeline and piggyback pipelines subjected to an oscillatory flow condition at a Keulegan?Carpenter (????
K
C
) number of 11 using SedFoam (an open-...
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Liquan Xie, Yehui Zhu and Tsung-Chow Su
The intersection of the span shoulder and the scour hole under a pipeline, also called the scour front, can affect the scour hole extension rate and the bearing capacity of the span shoulder, which is associated with pipeline spanning and failure. Studie...
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Woo-Dong Lee, Hyo-Jae Jo, Han-Sol Kim, Min-Jun Kang, Kwang-Hyo Jung and Dong-Soo Hur
Herein, hydraulic model experiments and numerical simulations were performed to understand the self-burial mechanism of subsea pipelines with spoilers under steady flow conditions. First, scour characteristics and self-burial functions according to the s...
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Fei Fan, Bingchen Liang, Yaru Li, Yuchuan Bai, Yanjun Zhu, Zhixia Zhu
Pág. 1 - 23
Rigid-lid approximation is usually used to replace the free surface in scour simulation. The influence of the rigid lid assumption on the prediction precision of scour hole in steady flow is studied in this paper. Firstly, a local scour model was constru...
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