Force and torque exerted by internal solitary waves in background parabolic current on cylindrical tendon leg by numerical simulation

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Force and torque exerted by internal solitary waves in background parabolic current on cylindrical tendon leg by numerical simulation
	Lu, Haibin; Xie, Jieshuo; Xu, Jiexin; Chen, Zhiwu; Liu, Tongya; Cai, Shuqun
刊名	OCEAN ENGINEERING
	2016
卷号	114 页码:250-258
关键词	Internal solitary waves Force Torque Cylindrical tendon leg South China Sea
通讯作者	Cai, SQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China.
中文摘要	An internal gravity wave (IGW) model is employed to simulate the generation of internal solitary waves (ISWs) over a sill by tidal flows, and it is shown that the simulated ISW-induced current field agrees basically with that observed. Then we use this model to study the force and torque exerted by ISWs in background parabolic current on small-diameter cylindrical tendon leg of the oil platform. Eight numerical experiments are designed and the results are compared. It is found that, no matter whether a background parabolic current is considered or not, the maximum force lies at the depth of turning point (where the horizontal current in upper layer begins to turn to zero and flow against that in lower layer), a negative extremum torque appears at the depth of turning point, and the maximum torque appears at the bottom of tendon leg. With background parabolic currents, the depth of turning point becomes shallower, and the magnitude of force decreases with depth from the depth of turning point either upward or downward. In case the affecting depths of background parabolic currents are the same, both the maximum force and its appearing depth decrease with increasing current curvature. If the maximum current velocities are the same, the maximum force decreases whilst the depths of the maximum force and turning point increase with increasing current curvature. If the background current curvatures are the same, both the maximum force and its appearing depth decrease with increasing affecting depth of parabolic current. (C) 2016 Elsevier Ltd. All rights reserved.
学科主题	Engineering; Oceanography
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15558]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Lu, Haibin,Xie, Jieshuo,Xu, Jiexin,et al. Force and torque exerted by internal solitary waves in background parabolic current on cylindrical tendon leg by numerical simulation[J]. OCEAN ENGINEERING,2016,114:250-258.
APA	Lu, Haibin,Xie, Jieshuo,Xu, Jiexin,Chen, Zhiwu,Liu, Tongya,&Cai, Shuqun.(2016).Force and torque exerted by internal solitary waves in background parabolic current on cylindrical tendon leg by numerical simulation.OCEAN ENGINEERING,114,250-258.
MLA	Lu, Haibin,et al."Force and torque exerted by internal solitary waves in background parabolic current on cylindrical tendon leg by numerical simulation".OCEAN ENGINEERING 114(2016):250-258.