A method to estimate the forces exerted by internal solitons on cylindrical piles
Cai, SQ; Long, XM; Gan, ZJ
2003
发表期刊OCEAN ENGINEERING
ISSN0029-8018
卷号30期号:5页码:673-689
摘要Internal soliton is the large amplitude wave existing in the pycnocline, induced by internal tide in the condition of special bottom topography. During its propagation process, the induced disturbance can bring about strong convergence of sea water and sudden strong current (wave-induced-current), which can cause severe threat to the ocean engineering structures, such as oil drilling platform and pipeline. In this paper, Morison's empirical method, modal separation and regression analyses are introduced to estimate the forces and torques exerted by internal soliton on cylindrical piles. As an example, a limited set of observational data recording a passage of the internal soliton near Dongsha Islands is used to estimate the horizontal velocity and its acceleration in a vertical section for computing the force and torque on a supposed pile, and the estimation results are reasonable. It is shown that, the higher number of the modes retained in the calculation, the better the estimation of velocity profile tits the observational one. A better overall approximation to the real solution can be reached if there are more observational current data acquired in a whole vertical profile. (C) 2002 Published by Elsevier Science Ltd.
部门归属Chinese Acad Sci, LED, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
关键词Internal Waves Solitary Wave Force Torques Piles Method South China Sea
学科领域Engineering, Civil ; Engineering, Ocean ; Oceanography ; Water Resources
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收录类别sci
资助项目LED
WOS记录号WOS:000180644500006
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/5581
专题热带海洋环境国家重点实验室(LTO)
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Cai, SQ,Long, XM,Gan, ZJ. A method to estimate the forces exerted by internal solitons on cylindrical piles[J]. OCEAN ENGINEERING,2003,30(5):673-689.
APA Cai, SQ,Long, XM,&Gan, ZJ.(2003).A method to estimate the forces exerted by internal solitons on cylindrical piles.OCEAN ENGINEERING,30(5),673-689.
MLA Cai, SQ,et al."A method to estimate the forces exerted by internal solitons on cylindrical piles".OCEAN ENGINEERING 30.5(2003):673-689.
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