| 钝体结构对纵振式压电气流发电机性能的影响 |
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| 引用本文： | 梁程,阚君武,张忠华,王淑云,黄鑫,富佳伟.钝体结构对纵振式压电气流发电机性能的影响[J].振动与冲击,2021(2):9-14,80. |
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| 作者姓名： | 梁程 阚君武 张忠华 王淑云 黄鑫 富佳伟 |
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| 作者单位： | 浙江师范大学精密机械研究所;浙江省城市轨道交通智能运维技术与装备重点实验室 |
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| 基金项目： | 国家自然科学基金项目(51877199,61574128,52077201,51377147);浙江省自然科学基金项目(LY20F010006);国家级大学生创新创业训练计划资助项目(201810345036,201810345037,201910345047)。 |
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| 摘 要： | 为满足管道监测系统的自供电需求,提出一种复合钝体扰流纵振式压电气流发电机.介绍了发电机的结构、工作原理.通过理论分析与实验测试研究了钝体结构对其性能的影响,证明了发电机原理的可行性.研究结果表明:平均阻力随流速及直径比增加呈二次方增长,平均阻力系数随直径比的增大而增大,最后趋于稳定(5.34);对于柔性钝体发电机,直径...
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| 关 键 词： | 压电 自供电 发电机 流体 自激 |
The influence of bluff body structure on the performance of a piezoelectric airflow generator using axial longitudinal vibration mode |
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| LIANG Cheng,KAN Junwu,ZHANG Zhonghua,WANG Shuyun,HUANG Xin,FU Jiawei.The influence of bluff body structure on the performance of a piezoelectric airflow generator using axial longitudinal vibration mode[J].Journal of Vibration and Shock,2021(2):9-14,80. |
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| Authors: | LIANG Cheng KAN Junwu ZHANG Zhonghua WANG Shuyun HUANG Xin FU Jiawei |
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| Affiliation: | (Institute of Precision Machinery and Smart Structure,Zhejiang Normal University,Jinhua 321004,China;Key Laboratory of Urban Rail Transit Intelligent Operationand Maintenance Technology and Equipment of Zhejiang Province,Jinhua 321004,China) |
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| Abstract: | To meet self-powered requirements of the pipeline monitoring system,a composite turbulent bluff-body piezoelectric airflow generator using axial longitudinal vibration mode was proposed in this paper.The structure and working principle of the airflow generator were introduced.The theoretical analysis and experimental tests were carried out to study the influence of the bluff body structure on its performance.Therefore,the principle feasibility of the composite bluff-body piezoelectric airflow generator using axial longitudinal vibration mode was proved.The results show that the average drag increases quadratically with the increasing of flow velocity and bluff-body diameter ratio.The average drag factor increases with the increasing diameter ratio until it reaches a steady-state value of 5.34 finally.For the piezoelectric airflow generator with the flexible bluff body,both diameter ratio and the thickness of bluff body have great influence on the output voltage.There are optimal diameter ratio(α=0.953)and optimal thickness range(0.1 mm
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| Keywords: | piezoelectric self-powered generator fluid self-excitation |
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