Study on suppressing the vortex-induced vibration of flexible riser in frequency domain

doi:10.1016/j.apor.2021.102882

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Study on suppressing the vortex-induced vibration of flexible riser in frequency domain
	Song, Jixiang 1,2; Chen, Weimin 1,2; Guo, Shuangxi 1,2; Yan, Dingbang 1,2
刊名	APPLIED OCEAN RESEARCH
	2021-11-01
卷号	116 页码:12
关键词	Flexible riser Vortex-induced vibration Active control Frequency domain
ISSN号	0141-1187
DOI	10.1016/j.apor.2021.102882
通讯作者	Chen, Weimin(wmchen@imech.ac.cn)
英文摘要	Vortex-induced vibration (VIV) may cause severe fatigue damage on deep-sea flexible risers. In many researches on active control of VIV, numerical simulation is widely used because of its suitability for parametric studies and lower cost compared to experiments. However, the existing numerical simulations rarely consider the change of lift during the active control of VIV due to the complexity of the control method. Moreover, the calculation time of numerical simulation is relatively long in the time domain. To solve these problems, the active control proposed in this paper is carried out in the frequency domain. A boundary control method considering the change of lift force is proposed through an active control bending moment is applied to the top of riser. Compared with the experimental and numerical results of the flexible riser model under shear flow, the effectiveness of the proposed method is verified. In addition, the effects of different shear currents and different controlled bending moments on structural fatigue damage are studied. The results demonstrated that the reduction of fatigue damage is smaller when the control bending moment is small. As the control bending moment increases, the reduction of fatigue damage increases. However, when the control bending moment exceeds the critical value, the fatigue damage no longer decreases. From the total power perspective, the control energy and the proportion of energy in the system increase with the growth of the control moment. It is difficult to directly obtain the optimal control bending moment although there is an optimal control bending moment. Trial calculations are used to obtain the optimal control bending moment in this paper. The greater the shear currents, the greater the required control bending moment.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000]
WOS关键词	BOUNDARY CONTROL ; ACTIVE CONTROL ; MARINE RISERS
WOS研究方向	Engineering ; Oceanography
语种	英语
WOS记录号	WOS:000705510700005
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87602]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Chen, Weimin
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Song, Jixiang,Chen, Weimin,Guo, Shuangxi,et al. Study on suppressing the vortex-induced vibration of flexible riser in frequency domain[J]. APPLIED OCEAN RESEARCH,2021,116:12.
APA	Song, Jixiang,Chen, Weimin,Guo, Shuangxi,&Yan, Dingbang.(2021).Study on suppressing the vortex-induced vibration of flexible riser in frequency domain.APPLIED OCEAN RESEARCH,116,12.
MLA	Song, Jixiang,et al."Study on suppressing the vortex-induced vibration of flexible riser in frequency domain".APPLIED OCEAN RESEARCH 116(2021):12.