绕NACA0009水翼锁频特性试验研究  

Experimental Study on Lock-in Characteristics of NACA0009 Hydrofoil

作　　者：黄彪[1] 龚诗婷 刘韵晴 吴钦[1] 王国玉[1] HUANG Biao;GONG Shiting;LIU Yunqing;WU Qin;WANG Guoyu(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;School of Chemical Engineering,Hebei University of Technology,Tianjing 300401,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]河北工业大学化工学院,天津300401

出　　处：《北京理工大学学报》2025年第3期287-294,共8页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(52279081);北京市自然科学基金资助项目(3232033);中央高校基本科研项目基金资助(2023CX01004)。

摘　　要：试验基于涡激振动同步测量系统,采用了来流速度连续变化控制技术,通过对水翼尖端变形和对尾流场结构的精确测量,研究了来流速度连续线性变化的条件下绕NACA 0009水翼的涡激振动响应和锁频特性.结果表明:水翼在进入和退出锁频区间时,会发生“幅度跳跃”现象,即结构的振动幅度会出现相差百倍的显著变化;在锁频区间内观察到“频率增加”现象,即结构的固有频率会跟随来流速度缓慢增加.综合分析了水翼锁频时旋涡演化、尖端位移和结构振动速度三者的作用关系,可为涡激振动耦合关系和锁频机理提供更多的试验依据.In order to study the vortex-induced vibration response and lock-in characteristics of NACA 0009 hydrofoil under the inlet velocity changing linearly and continuously,a measurement experiment was arranged based on a vortex-induced vibration synchronous measurement experiment platform.Adopting a feedback control method for incoming flow velocity,the small deformation of hydrofoil trailing edge displacement and wake structures were accurately measured,discovering a series of new lock-in phenomena innovatively.The experiment results show that an“amplitude jump”can occur on the hydrofoil when entering and exiting the lock-in regime,increasing hundredfold of the structural vibration amplitude.There is a“frequency increase”phenomenon in the lock-in regime due to the structural natural frequency increasing slowly with the inlet speed.Analyzing the interaction among of vortex evolution,displacement and vibration velocity in the lock-in regime,the experimental study can provide more bases for the lock-in mechanism and fluid-structure interaction characteristics of the hydrofoil.

关 键 词：水翼 涡激振动 旋涡脱落 锁频 流固耦合 

分 类 号：O352[理学—流体力学]