Experimental Investigation on Vortex-Induced Vibration of Deep-Sea Risers of Different Excitation Water Depths

作     者：LI Peng DONG Zheng-kai LIU Yu WANG Yu CONG Ai-jun GUO Haiyan FU Qiang LI Peng;DONG Zheng-kai;LIU Yu;WANG Yu;CONG Ai-jun;GUO Hai-yan;FU Qiang

作者机构：College of Civil Engineering and ArchitectureShandong University of Science and TechnologyQingdao 266590China Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and MitigationQingdao 266590China College of EngineeringOcean University of ChinaQingdao 266100China Yantai CIMC Raffles Ocean Engineering Co.Ltd.Yantai 264000China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2021年第35卷第2期

页      面：215-227页

核心收录：

学科分类：081505[工学-港口、海岸及近海工程] 08[工学] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.51709161) the Key Technology Research and Development Program of Shandong Province(Grant No.2019GHY112061) the Research and Innovation Team of Ocean Oil and Gas Development Engineering Structure,College of Architecture and Civil Engineering,Shandong University of Science and Technology(Grant No.2019TJKYTD01) 

主　　题：deep-sea riser excitation water depth vortex-induced vibration(VIV) dynamic response coupling effect 

摘      要：The vortex-induced vibration test of the deep-sea riser was carried out with different excitation water depths in the wave-current combined water *** dimensionally changing the multi-stage water depth and hydrodynamic parameters such as outflow velocity at various water depths,the dynamic response parameters such as dominant frequency,dimensionless displacement and vibration trajectory evolution process of the riser under different excitation water depths were explored to reveal the sensitive characteristics of the dynamic response of vortexinduced vibration of the risers under different excitation water *** results show that different excitation water depths will change the additional mass of the riser and the fluid damping and other parameters,which will affect the spatial correlation and stability of the vortex shedding behind the *** the lock-in region,the distribution range of the characteristic frequency becomes narrow and centered on the lock-in *** increase of the excitation water depth gradually advances the starting point of the lock-in region of the riser,and at the same time promotes the excitation of the higher-order vibration frequency of the riser *** the dimensionless excitation water depth,the dominant frequency and dimensionless displacement are highly insensitive to the excitation water depth at high flow *** change of the excitation water depth will interfere with the correlation of the non-linear coupling of the ***“8-shapedgradually becomes irregular,and the vibration trajectories of the riser show“O-shape,“X-shapeand“Crescent-shape.