一种旋转振动圆柱获取能量的参数化研究  

Parameterized Study on Energy Acquisition of Vibrating Rotating Cylinder

作　　者：崔致斐 孙槿静 许斌[1] 黄典贵[1] CUI Zhifei;SUN Jinjing;XU Bin;HUANG Diangui(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《机械工程学报》2020年第22期142-147,共6页Journal of Mechanical Engineering

摘　　要：提出一种旋转振动圆柱从潮流能中主动获取能量的方法。基于Fluent软件的用户自定义函数求解旋转振动圆柱升力,采用动网格技术对一定速度下的旋转振动圆柱获取潮流能进行数值模拟研究。参照相关试验结果,进行数值模拟结果确认,得到的最大升力系数幅值与平均阻力系数幅值与试验结果基本吻合。分析相位差、振幅比及转动幅值对旋转振动圆柱获能效率的影响。结果表明,同振幅比、同转动幅值的旋转振动圆柱,能量利用率都是随着相位差先逐渐增大后减小;同相位差、同转动振幅的旋转振动圆柱,在有效获能范围,其振幅比越大则能量利用率越高;同相位差、同振幅比的旋转振动圆柱,随着转动幅值的增加,其能量利用率先逐渐增加后减小;当相位差为243°,转动幅值为3,振幅比为2.0时,能量利用率最高。A method of actively acquiring energy from tidal current by a rotating vibration cylinder is proposed.The user-defined function based on Fluent software is used to solve the lifting force of the rotating vibration cylinder,and the dynamic grid technology is applied to numerically simulating study the flow energy obtained by the rotating vibration cylinder at a certain speed.Firstly,according to the test results,the numerical simulation results are confirmed,and it shows that the maximum lift coefficient and the average drag coefficient are consistent with the test results.Secondly,the effects of phase difference,amplitude ratio and rotation amplitude on the energy efficiency of the rotating vibration cylinder are analyzed.The results show that the energy utilization rate of the rotating vibration cylinders with the same amplitude ratio and the same rotation amplitude gradually increases first and then decreases with the phase difference;in the effective energy range,the greater the amplitude ratio,the higher the energy efficiency of the rotating vibration cylinder with the same phase difference and the same rotating amplitude ratio;with the increase of the rotation amplitude,the energy utilization rate of the rotating vibration cylinder with the same pha se difference and the same amplitude ratio gradually increases and then decreases.The energy utilization rate is highest when the phase difference is 243 degree,the rotation amplitude is 3 and the amplitude ratio is 2.0.

关 键 词：潮流能 旋转振动圆柱 振幅比 能量利用率 相位差 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程]