基于XFlow的涡激振动压电能量收集数值研究  

Numerical Research of Piezoelectric Energy Harvesting from VIV Based on XFlow

作　　者：张敏[1,2] 谢玉林[2] 雷林[2] 赖宇阳 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]重庆交通大学航运与船舶工程学院,重庆400074 [3]树优信息技术有限公司,北京100062

出　　处：《重庆交通大学学报（自然科学版）》2017年第1期103-109,共7页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市社会民生科技创新专项项目(cstc2015shmszx30031);重庆市教委科学技术研究项目(KJ1705142);重庆交通大学实验教学改革与研究基金项目(syjg201513)

摘　　要：基于格子波尔兹曼无网格方法,利用XFlow对低质量阻尼比的单圆柱进行了涡激振动的数值模拟,数值计算结果与实验结果吻合较好。利用XFlow与Open Modelica建立流-机-电耦合计算模型求解涡激振动与高斯定律联立方程,对涡激振动压电能量收集进行了数值分析,得到不同电阻下的电压及功率输出。通过对振幅及电压时程曲线的比较得到两者相位差的变化规律。结果表明:输出电压随着电阻的增大而增大,输出功率在特定来流速度和电阻时最大。The VIV numerical simulations of a circular cylinder with low mass damping ratio is done by using XFlow based on lattice Bohzmann meshless method. The numerical results are in good agreement with the experimental results. The fluid- mechanical-electric coupled model is established in XFlow and OpenModelica to solve the VIV and Gauss simultaneous e- quations. The output voltage and power of different values of load resistance are obtained through the numerical analysis. The change rule of the phase difference between the amplitude and voltage is obtained through comparing the amplitude and volt- age time traces. The results show that the output voltage increased with the resistance load, the maximum output power can be obtained at a certain stream velocity and load resistance.

关 键 词：机电工程 XFlow 涡激振动 低质量阻尼比 压电能量收集 

分 类 号：U661.1[交通运输工程—船舶及航道工程]