| 无叶片风力机捕能柱涡激摆动特性及捕能效率 |
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| 引用本文： | 龚曙光,吴兴豪,卢海山,谢桂兰,张建平.无叶片风力机捕能柱涡激摆动特性及捕能效率[J].太阳能学报,2022,43(1):21-28. |
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| 作者姓名： | 龚曙光 吴兴豪 卢海山 谢桂兰 张建平 |
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| 作者单位： | 湘潭大学机械工程学院 |
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| 基金项目： | 国家自然科学基金(51875493)。 |
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| 摘 要： | 针对无叶片风力机捕能柱的涡激摆动特性,构建捕能柱系统简化的质量-阻尼-弹簧振动模型,推导其固有频率与捕能效率的计算式,并结合k-ωSST湍流模型和动网格方法,建立捕能柱涡激摆动的仿真模型并进行验证,探究捕能柱质量比、系统阻尼比和固有频率对其涡激摆动特性与捕能效率的影响.结果表明:捕能柱涡激摆动最大摆幅与捕能效率均发生在...
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| 关 键 词： | 涡激振动 固有频率 阻尼比 无叶片风力机 捕能效率 质量比 |
VORTEX-INDUCED SWING CHARACTERISTICS AND CAPTURING ENERGY EFFICIENCY OF CAPTURING ENERGY COLUMN OF BLADELESS WIND TURBINE |
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| Gong Shuguang,Wu Xinghao,Lu Haishan,Xie Guilan,Zhang Jianping.VORTEX-INDUCED SWING CHARACTERISTICS AND CAPTURING ENERGY EFFICIENCY OF CAPTURING ENERGY COLUMN OF BLADELESS WIND TURBINE[J].Acta Energiae Solaris Sinica,2022,43(1):21-28. |
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| Authors: | Gong Shuguang Wu Xinghao Lu Haishan Xie Guilan Zhang Jianping |
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| Affiliation: | (School of Mechanical Engineering,Xiangtan University,Xiangtan 411105,China) |
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| Abstract: | A simplified mass-damp-spring vibration model for the system of capture energy column of the bladeless wind turbine is constructed to study the vortex-induced swing characteristics of the capture energy column.The formula for calculating the natural frequency and capture energy efficiency of capture energy column is deduced.Combined with the k-ωSST turbulence model and the dynamic grid method,a simulation model of the vortex induced swing of the energy trap column was established and verified.The effects of the mass ratio of the energy trap column,the system damping ratio and the natural frequency on the characteristics of the vortex induced swing and the energy capture efficiency of the column were investigated.The results shown that the maximum amplitude of the vortex induced swing and the efficiency of the energy trap both occur at the frequency ratio f*≈1,i.e.the lock-in frequency.The reduction of the mass ratio and system damping ratio can improve the energy capture efficiency of the bladeless wind turbines;When the wind speed increases,the swing amplitude and capturing efficiency of the energy trap column can be increased by increasing the natural frequency of the system,and the larger the Reynolds number is,the larger the maximum swing amplitude of the capture energy column is.These conclusions can provide guidance for the design of bladeless wind turbines. |
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| Keywords: | vortex-induced vibration natural frequency damping ratio bladeless wind turbine energy capture efficiency mass ratio |
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