新型涡激振动俘能装置水动力特性及能量转换效率研究  

Study on the Hydrodynamic Characteristics and Energy Conversion Efficiency of a Novel Vortex-Induced Vibration Energy Harvester

作　　者：张超 印泽昊 宁航 康恺 Zhang Chao;Yin Zehao;Ning Hang;Kang Kai(CNOOC Inspection Technology Co.,Ltd.,Tianjin,China)

机构地区：[1]中海石油技术检测有限公司,天津

出　　处：《科学技术创新》2025年第10期1-4,共4页Scientific and Technological Innovation

摘　　要：流体与结构之间的相互作用使得流体和结构之间产生能量交换,具有很大的发电潜力。针对方柱的涡激振动设计了一种涡激振动发电装置,探究其对发电效率的影响。通过在方柱周围附加主动旋转的控制圆杆转子,影响方柱旋涡的生成和脱落。基于overmesh重叠网格技术对装置进行二维网格划分,采用动网格和用户自定义函数方法,通过对网格的更新模拟方柱系统的二维移动和附加圆柱转子的旋转控制。利用专业软件进行了二维数值模拟,发现了俘能系统振幅在增长到60°转子夹角后趋于稳定且随转子转速的增大而增大,系统俘能效率随转子夹角的增大略微增大且与转子转速呈现出二次函数变化关系。The interaction between the fluid and the structure leads to energy exchange between them,presenting significant potential for power generation.A vortex-induced vibration energy harvesting device has been designed to investigate its impact on power generation efficiency.By attaching actively rotating control rods around a square cylinder,the formation and shedding of vortices from the square cylinder are influenced.The device is modeled using the overmesh overlapping grid technique to perform a two-dimensional grid division.The dynamic mesh and user-defined functions are employed to simulate the two-dimensional motion of the square cylinder system and the rotational control of the additional cylindrical rotors.Professional software was used to conduct two-dimensional numerical simulations.The results revealed that the amplitude of the energy harvesting system stabilizes after increasing to a rotor angle of 60°and continues to increase with the rotor speed.The energy harvesting efficiency of the system slightly increases with the rotor angle and exhibits a quadratic relationship with the rotor speed.

关 键 词：流致振动 主动控制 重叠网格 水动力 俘能效率 

分 类 号：O353[理学—流体力学]