刚性联动三棱柱振子流致振动运动特性分析  

Analysis of flow induced motion for rigidly coupled triangular prisms

作　　者：练继建 黄怀毅[1,3] 姚帅 邵楠 王孝群 王珂 LIAN Jijian;HUANG Huaiyi;YAO Shuai;SHAO Nan;WANG Xiaoqun;WANG Ke(School of Water Conservancy and Hydroelectric Power,Hebei University of Engineering,Handan 056038,China;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;Hebei Key Laboratory of Intelligent Water Conservancy,Hebei University of Engineering,Handan 056038,China;Marine Energy and Intelligent Construction Research Institute,Tianjin University of Technology,Tianjin 300382,China)

机构地区：[1]河北工程大学水利水电学院,邯郸056038 [2]天津大学水利工程仿真与安全国家重点实验室,天津300350 [3]河北工程大学河北省智慧水利重点实验室,邯郸056038 [4]天津理工大学海洋能源与智能建设研究院,天津300382

出　　处：《水道港口》2024年第6期892-898,共7页Journal of Waterway and Harbor

基　　金：河北省高等学校科学技术研究项目(BJK2023099);河北省自然科学基金项目(E2022402074)。

摘　　要：以流致振动能量转换系统为基础,以间距比和刚度为变量针对刚性联动三棱柱振子进行试验,评估振幅、频率等指标。试验改变间距比以及系统刚度来研究间距比、刚度对刚性联动三棱柱振子的影响。研究旨在探究刚性联动三棱柱振子流致振动的最佳振动条件,为后续多振子流致振动研究扩展思路。试验结果表明:刚性联动三棱柱振子,在不同刚度工况下都有较好的振动效果,且振子振动随流速变化表现为典型的软驰振。间距比S/D=1的振子具有最好的振动表现,系统最大振幅比为A^(*)=1.25(K=1800 N/m,S/D=1,Ur=10)Based on the flow-induced motion energy conversion system,varied spacing ratio and stiffness were applied as parameters to estimate the amplitude,frequency of the rigidly coupled triangular prisms.Spacing between triangular prisms were varied to adjust the spacing ratio,as well as the system stiffness is varied to study the effect of stiffness on the oscillation system.The purpose of the experimental tests is aimed to investigate the optimal conditions for the oscillation system,and expand the research topics on flow-induced motion for multi-coupled prisms.The experimental conclusions can be summarized as follows:Appreciable oscillation can be observed at different system stiffness.As the flow velocity continues to increase,the oscillation performs as typical soft galloping.In all the experimental tests,the case of S/D=1 presents optimal oscillation,and the maximum amplitude ratio is A^(*)=1.25(K=1800 N/m,S/D=1,Ur=10).

关 键 词：海流能利用 流致振动 刚性联动三棱柱 涡激振动 振动响应 

分 类 号：U65[交通运输工程—港口、海岸及近海工程] TM61[交通运输工程—船舶与海洋工程]