Experimental Study on Vortex-Induced Vibration of Rough Risers with Coupling Interference Effect Under Side-by-Side Arrangement  

作　　者：HU Ze-bo LIU Zhen LI Peng GUO Hai-yan WANG Shu-bing REN Xiao-hui HOU Hao WANG Ye-shuo 

机构地区：[1]College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao 266590,China [2]Qingdao Key Laboratory of Marine Civil Engineering Materials and Structures,Qingdao 266590,China [3]College of Engineering,Ocean University of China,Qingdao 266100,China [4]CHEC Dredging Co.,Ltd,Shanghai 200136,China

出　　处：《China Ocean Engineering》2024年第1期18-28,共11页中国海洋工程（英文版）

基　　金：financially supported by the Natural Science Foundation of Shandong Province(Grant Nos.ZR2023ME040 and ZR2022QE118);the Key Technology Research and Development Program of Shandong Province(Grant No.2023CXGC010316);the Natural Science Foundation of Qingdao(Grant No.23-2-1-207-zyyd-jch);the Introduction and Education Plan for Young Innovative talents in Colleges and Universities of Shandong Province(Marine Civil Engineering Materials and Structure Innovation Research Team).

摘　　要：A vortex-induced vibration(VIV)experiment of rough risers with coupling interference effect under a side-by-side arrangement was carried out in a wave-current combined flume.The roughness of the riser was characterized by arranging different specifications of surface attachments on the surface of the riser.Rough risers with three different roughnesses were arranged side by side with smooth risers to explore the VIV response of the riser under the combined action of roughness and interference effect,and to reveal the coupling mechanism between roughness and interference effect.The experimental results show that,compared with that of a smooth riser,the VIV of a rough riser under the coupling interference effect has a wider"lock-in"region,and the displacement decreases more significantly at a high reduced velocity,which is more likely to excite higher-order modes and frequency responses.In addition,the displacement response and frequency response of the smooth riser are not significantly affected by wake interference from the rough riser,which is caused by the decrease of the wake region due to the delay of the boundary layer separation point of the rough riser.

关 键 词：marine riser vortex-induced vibration side-by-side arrangement ROUGHNESS interference effect 

分 类 号：P756.2[天文地球—海洋科学]