影响从涡激振动中获取能量的参数研究

罗竹梅;张立翔

振动与冲击 ›› 2014, Vol. 33 ›› Issue (9) : 12-15.

PDF(1316 KB)
PDF(1316 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (9) : 12-15.
论文

影响从涡激振动中获取能量的参数研究

  • 罗竹梅1, 张立翔2

作者信息 +

The influence of parameters on harvesting energy from vortex-induced vibration

  • LUO Zhu-mei1,ZHANG Li-xiang2
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文章历史 +

摘要

涡激振动是一种常见的流固耦合现象,当结构物振幅较大时,可利用涡激振动从海洋流中或河流中获取能量。论文通过流固充分耦合数值方法,对二维弹性支撑圆柱体在均匀流中的横向涡激振动进行了模拟。用该数值方法对4种方案进行计算,分析质量比m*、阻尼比ζ、质量阻尼比m*ζ和固有频率fn对圆柱体从涡激振动中获取能量效率η的影响。结果发现m*、ζ、m*ζ和fn都会影响η,且存在一个最优的m*ζ值,使能量获取效率η最大。对基于这一想法的振动系统的设计,论文结论可作为参考。

Abstract

The vortex-induced vibration is a kind of common phenomenon of fluid-structure interaction. When the vibration of structure is substantial, it can be used to extract energy from ocean or river currents. A numerical method using fully coupling between fluid and structure was presented for simulating the vortex-induced vibration of spring mounted cylinder in uniform currents. In order to analysis the influence of mass ratio m*, damping ratio ζ, mass-damping ratio m*ζ and natural frequency fn on the energy conversion efficiency η, four groups of cases were computed. The results reveals that η is influenced by the above parameters and there is an optimum value of m*ζ where the η presents a maximum. The conclusion is considered as a reference to the design of vibration system which based on the present concept.


关键词

涡激振动 / 流固耦合 / 质量阻尼比 / 能量获取效率

Key words

vortex-induced vibration / fluid-structure interaction / mass-damping ratio / energy conversion efficiency

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导出引用
罗竹梅;张立翔. 影响从涡激振动中获取能量的参数研究[J]. 振动与冲击, 2014, 33(9): 12-15
LUO Zhu-mei;ZHANG Li-xiang. The influence of parameters on harvesting energy from vortex-induced vibration [J]. Journal of Vibration and Shock, 2014, 33(9): 12-15

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