摘要
设计了一种海洋立管涡激振动涡轮式抑振-俘能装置,并在波-流联合水槽中对3种不同覆盖率的抑振-俘能装置进行试验研究。通过变化外流流速与装置覆盖率,分析立管的位移均方根、抑振效率、发电量等参数,揭示不同流速与不同覆盖率对装置抑振效率及俘能效率的影响;结合装置发电效率和抑振效率,探索俘能与涡激振动抑制之间的耦合作用机理。研究结果表明:涡轮式抑振-俘能装置可以有效降低立管的振动幅值,在试验约化速度范围内的整体抑振效率高于60%,最大抑振效率可达97.13%;当约化速度满足装置俘能发电的最低限值后,发电量随着约化速度的增加稳步提升;抑振效率对于覆盖率的敏感度较低,抑振-俘能装置的发电效率受约化速度影响较大,在高约化速度下装置不仅可有效抑制涡激振动,还能够达到理想的发电效率,电量最大值时的抑振效率为81.85%。
A turbine-type suppression-energy harvesting device for vortex-induced vibration(VIV)of marine risers was designed,and three kinds of suppression-energy harvesting devices with different coverage ratios were experimentally studied in a combined wave-current tank.By changing the outflow velocity and device coverage,the root mean square of displacement,vibration suppression efficiency,power generation and other parameters of the riser were analyzed to reveal the impact of different velocity and coverage on the vibration suppression efficiency and energy capture efficiency of the device.Combined with the power generation efficiency and vibration suppression efficiency of the device,the coupling mechanism between the energy captured and the vortex-induced vibration suppression was explored.The research results show that the turbine-type suppression-energy harvesting device can effectively reduce the vibration amplitude of the riser.The overall vibration suppression efficiency of the device is higher than 60%within the reduced velocity range of the test and the maximum vibration suppression efficiency can reach 97.13%.When the reduced velocity meets the minimum limit of the power generation by capturing energy of the device,the power generation capacity increases steadily with the increase of the reduced velocity.The vibration suppression efficiency is less sensitive to the coverage ratio while the power generation efficiency of the vibration suppression-energy harvesting device is greatly affected by the reduced velocity.At high reduced velocity,the device can not only suppress vortex-induced vibration effectively,but also achieve a relatively ideal power generation efficiency.When the power generation is at the maximum value,the vibration suppression efficiency is 81.85%.
作者
任啸辉
李朋
王传振
刘震
陈鑫
娄敏
朱立
王业硕
黄一杰
REN Xiaohui;LI Peng;WANG Chuanzhen;LIU Zhen;CHEN Xin;LOU Min;ZHU Li;WANG Yeshuo;HUANG Yijie(College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao 266590,China;School of Petroleum Engineering,China University of Petroleum,Qingdao 266580,China;Qingdao Key Laboratory of Materials and Structures for Marine Civil Engineering,Qingdao 266590,China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2023年第3期53-62,共10页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(51709161,U2006226)
山东省重点研发计划项目(2019GHY112061)
山东省自然科学基金项目(ZR2022QE118)
山东省高等学校青创人才引育计划项目。
关键词
海洋立管
涡激振动
抑振-俘能
抑振效率
发电效率
marine riser
vortex-induced vibration
suppression-energy harvesting
vibration suppression efficiency
power generation efficiency
