Experimental Investigation of Disturbing the Flow Field on the Vortex-Induced Vibration of Deepwater Riser Fitted with Gas Jetting Active Vibration Suppression Device

作     者：LI Peng JIANG Zhen-xing LIU Yu WANG Yu GUO Hai-yan WANG Fei ZHANG Yong-bo LI Peng;JIANG Zhen-xing;LIU Yu;WANG Yu;GUO Hai-yan;WANG Fei;ZHANG Yong-bo

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 National Oceanographic Center of QingdaoQingdao 266071China 

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

年 卷 期：2020年第34卷第3期

页      面：341-351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 National Natural Science Foundation of China(Grant No.51709161) the Key Research and Development Program of Shandong Province(Grant Nos.2019GHY112061 and 2018GHY115045) Research and Innovation Team of Ocean Oil and Gas Development Engineering Structure,College of Civil Engineering and Architecture,Shandong University of Science and Technology(Grant No.2019TJKYTD01) Shandong Provincial Natural Science Foundation,China(Grant No.ZR2017BEE041) Science and technology innovation project for postgraduates of Shandong University of Science and Technology(Grant No.SDKDYC180327) 

主　　题：deepwater riser vortex-induced vibration(VIV) active vibration suppression jet-type excitation spacing disturbance flow 

摘      要：An experimental investigation on the disturbance effect of jet-type active vibration suppression device on vortexinduced vibration of deep-sea riser was carried out in the wave-flow combined *** vibration suppression device was designed in which the jet pipe was horizontally fixed to the front end of the *** varying three different excitation spacings and multi-stage outflow velocities,the influence law of the dominant frequency,dimensionless displacement and other dynamic response parameters was studied under different excitation spacings,and the mechanism and sensitive characteristics of the disturbance suppression were *** results indicate that the variation of excitation spacing makes gas curtain enter the strong disturbed flow region at different velocities and angles,and the coupling relationship between excitation spacing and reduced velocity is the key factor to enter the strong disturbed flow region to achieve the optimal disturbance *** the strong disturbed flow region,the influence of gas curtain on the dominant frequency is obviously affected by the flow velocity,while the vibration displacement is stable at the same amplitude and is weakly affected by the flow *** curtain can effectively disturb the formation of vortex shedding,destroy the strong nonlinear coupled vibration of the riser,and achieve better vibration suppression *** the weak disturbed flow region,the vortex length of the riser tail is prolonged,the strong nonlinear coupled vibration of the riser is gradually restored,and the vibration suppression effect of the device gradually decreases.