串列联动双圆柱流致摆振试验研究  

Test study on flow-induced rotation of tandem-linked double cylinder

作　　者：冯卫鹏 燕翔[1,2] 及春宁 刘昉[1] 姚烨[3] 杨旭 邵楠[4] FENG Weipeng;YAN Xiang;JI Chunning;LIU Fang;YAO Ye;YANG Xu;SHAO Nan(State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300072,China;Key Laboratory of Comprehensive Simulation of Earthquake Engineering and Urban Rural Seismic Resilience,China Earthquake Administration,Tianjin 300072,China;Marine Energy and Intelligent Construction Research Institute,Tianjin University of Technology,Tianjin 300384,China;School of Water Conservancy and Hydroelectric Power,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]天津大学水利工程智能建设与运维全国重点实验室,天津300072 [2]中国地震局地震工程综合模拟与城乡抗震韧性重点实验室,天津300072 [3]天津理工大学海洋能源与智能建设研究院,天津300384 [4]河北工程大学水利水电学院,河北邯郸056038

出　　处：《振动与冲击》2024年第15期11-21,共11页Journal of Vibration and Shock

基　　金：河北省自然科学基金(E2022402074);天津市科技计划项目(23ZYYYJC00010)。

摘　　要：提出了串列联动双圆柱流致摆振理念,构建了摆振运动方程,分析了受力与运动规律,建立了摆振试验装置,并基于室内试验探究了串列联动双圆柱流致摆振特性,研究旨在为流致振动发电设备设计提供参考。研究表明:串列联动双圆柱摆振响应表现为涡激振动规律;间距比对摆振振幅和锁定区间影响较大,当间距比为4时振幅最小且响应中出现“再增长区”,当间距比为6时振幅最大,当间距比为8时锁定区间最大;系统刚度对摆振响应趋势影响不大,但不同刚度下摆振达到的最大振幅差异明显,该试验最大弧长比A^(*)为0.98,出现在1 400 N/m刚度工况。Here,the concept of tandem-linked double cylinder flow induced oscillation was proposed,the oscillation motion equation was established to analyze force and motion laws,the oscillation test device was built,and flow-induced rotation characteristics of tandem-linked double cylinder were explored based on indoor tests.The study could provide a reference for design of flow-induced vibration power generation equipment.It was concluded that tandem-linked double cylinder oscillation response exhibits a vortex-induced vibration pattern;the spacing ratio more largely affects oscillation amplitude and locking interval,when the spacing ratio is 4,the oscillation amplitude is the smallest and a“re-growth zone”appears in response,when the spacing ratio is 6,the amplitude is the largest,and when the spacing ratio is 8,the locking interval is the largest;system stiffness has a small impact on the trend of oscillation response,but differences among maximum amplitudes under different stiffness are obvious;the maximum arc length ratio A*in tests is 0.98,it occurs under the stiffness condition of 1400 N/m.

关 键 词：流致摆振 串列联动双圆柱 间距比 刚度 

分 类 号：TH218[机械工程—机械制造及自动化]