“圆-三角-附板”截面振子的流致振动试验研究  

Experimental study on the flow-induced vibration of a“circle-triangle-attachment”combined section oscillator

作　　者：刘昉[1] 向佳乐 燕翔[1,2] 冯卫鹏 邵楠 王孝群 LIU Fang;XIANG Jiale;YAN Xiang;FENG Weipeng;SHAO Nan;WANG Xiaoqun(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;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]河北工程大学水利水电学院,河北邯郸056038

出　　处：《振动与冲击》2025年第2期55-64,共10页Journal of Vibration and Shock

基　　金：河北省高等学校科学技术研究项目(BJK2024016);河北省高等学校科学技术研究项目(BJK2023099);天津市科技计划项目(24ZYYYJC00100);河北省自然科学基金(E2022402074)。

摘　　要：通过试验方法对“圆-三角-附板”截面振子的流致振动进行研究,分析了高宽比、系统阻尼比对振动的影响,并使用粒子图像测速技术对典型工况进行尾流拍摄,分析“圆-三角-附板”截面振子的尾流演化规律,为流致振动发电振子设计提供参考。主要结论如下:振动强度随着系统阻尼比提高而减弱;随着截面高宽比的增大,振子发生驰振的能力增强,而最大振幅比和频率比均降低;随着高宽比的增大,旋涡的涡量增加,尺度增长,振子受力面积变大,旋涡附着现象更加明显,振子受力效果更好;随着振子高宽比的增大,正向旋涡发育和脱落的时间比反向旋涡更长。The flow-induced vibration of a“circle-triangle-attachment”combined section oscillator was studied by experimental method,and the influence of the aspect ratio and system damping ratio on the vibration was analyzed.The particle image velocimetry technology was used to photograph the wake in typical working conditions,which could provide reference for the design of the flow-induced vibration generation oscillator.The main conclusions are as follows:the vibration intensity decreases as the damping ratio of the system increases;with the increase of the aspect ratio,the ability of the oscillator to poduce galloping is enhanced,while the maximum amplitude ratio and frequency ratio decrease.With the increase of the aspect ratio,the vorticity increases,the vortex scale increases,the force area of the oscillator becomes larger,the vortex adhesion phenomenon becomes more obvious,and the force effect of the oscillator is better;with the increase of aspect ratio,the time for the forward vortex to develop and shed is longer than that for the reverse vortex.

关 键 词：流致振动 组合截面振子 尾流 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3