风浪流联合发电装置涡激振动数值模拟研究  

NUMERICAL STUDY ON VORTEX-INDUCED VIBRATIONS OF COMBINED WIND,WAVE,AND TIDAL POWER GENERATION DEVICE

作　　者：王家正 孙洪源[1] 林海花 焦波 刘德鑫 孙光 Wang Jiazheng;Sun Hongyuan;Lin Haihua;Jiao Bo;Liu Dexin;Sun Guang(Naval Architecture and Port Engineering College,Shandong Jiaotong University,Weihai 264209,China;School of Navigation and Shipping,Shandong Jiaotong University,Weihai 264209,China)

机构地区：[1]山东交通学院船舶与港口工程学院,威海264209 [2]山东交通学院航运学院,威海264209

出　　处：《太阳能学报》2024年第11期545-552,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51909148)。

摘　　要：使用Fluent模拟风浪流联合发电装置的水动力特性。利用UDF和动网格技术实现圆柱振子的流固耦合模拟,分析圆柱振子的涡激振动特性。首先,从受力、运动频率、幅值、轨迹、升阻力系数等5个方面分析风浪流联合发电装置圆柱振子的涡激振动特性;其次,通过对圆柱绕流、强迫运动、单向涡激振动、双向涡激振动等多种运动形态的对比,研究风浪流联合发电装置圆柱振子的涡泄模式。最后通过与J&W的经典实验对比,证明该模拟的准确性。研究表明:单向涡激振动时,振子阻力系数的平均值和均方差均呈先增加后减少的趋势,且在约化速度为5.53~9.51时发生锁定现象;与圆柱振子绕流相比,单向涡激振动的频率比随约化速度的增加而增大,且在锁定区间保持稳定,约为1;来流速度选取锁定区间内流速时,单向或双向涡激振动的尾涡形式由2S模式转变为SS模式。This paper employs Fluent to simulate the hydrodynamic characteristics of the Wind,Wave,and Tidal Power Generation Device.The fluid-structure interaction simulation of a circular cylinder oscillator is achieved through the use of User-Defined Functions(UDFs)and dynamic mesh technology for analyzing the characteristics of vortex-induced vibration(VIV)of the circular cylinder oscillator.The VIV characteristics of the circular cylinder oscillator in the Wind,Wave,and Tidal Power Generation Device are analyzed from five aspects:forces,motion frequency,amplitude,trajectory,and lift-to-drag ratio.Furthermore,by comparing various motion patterns such as cylinder flow,forced motion,unidirectional vortex-induced vibration,and bidirectional vortex-induced vibration,the vortex shedding modes of the circular cylinder oscillator in the Wind,Wave,and Tidal Power Generation Device are studied.Finally,through a comparison with the classic experiment conducted by J&W,the accuracy of the simulation is validated.The research indicates that during single-direction vortex-induced vibrations,both the average value and the standard deviation of the drag coefficient of the oscillator first increase and then decrease.Lock-in occurs in the reduced velocity range of approximately 5.53 to 9.51.Compared to the flow around a cylindrical oscillator,the frequency ratio of single-direction vortex-induced vibrations increases with the reduced velocity and remains stable at approximately 1 within the lock-in range.When the flow velocity is selected within the lock-in range,the tail vortex mode for either single-direction or bidirectional vortex-induced vibrations changes from the 2S mode to the SS mode.

关 键 词：海流能 涡激振动 流固耦合 涡泄模式 约化速度 数值模拟 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]