中国海洋大学学报（自然科学版）2024，Vol.54Issue(9)：133-140,8.DOI:10.16441/j.cnki.hdxb.20220325
不同刚度圆柱振子涡激振动数值模拟
Numerical Simulation of Vortex-Induced Vibration of Cylindrical Oscillator with Different Stiffness
摘要
Abstract
In order to study the influence of the vortex-induced vibration system with different stiffness on the vibration characteristics of cylindrical oscillators,a simulation model of vortex-induced vibration system of the single-degree of freedom was established,and the numerical simulation was carried out by using computational fluid dynamics(CFD)method and overlapping mesh technology.The accuracy of the model and the reliability of the method are verified by comparison with published data.In this pa-per,the amplitude response,frequency response and wake vortex characteristics of cylindrical oscillator under time-varying velocity are analyzed.The simulation results show that when the amplitude of cylin-drical oscillator decreases with the change of flow velocity,adjusting the spring stiffness can maintain the large dimensionless amplitude and oscillator frequency,the spacing between wake shedding vortices increases,and the shedding mode changes from"2S"mode to"2P"mode.关键词
涡激振动/弹簧刚度/计算流体力学/重叠网格/圆柱振子Key words
vortex-induced vibration/spring stiffness/computational fluid dynamics/overlapping grid/cylindrical oscillator分类
能源科技引用本文复制引用
宋玉泉,谭俊哲,袁鹏,司先才,杜修茂,李昌明..不同刚度圆柱振子涡激振动数值模拟[J].中国海洋大学学报（自然科学版）,2024,54(9):133-140,8.基金项目
国家重点研究发展计划项目(2018YFB1501903) （2018YFB1501903）
山东省重点研究发展计划项目(2019GGX103012)资助 Supported by the National Key Research and Development Program of China(2018YFB1501903) （2019GGX103012）
the Key Research and Development Program of Shandong Province(2019GGX103012) （2019GGX103012）
