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

LUO Zhu-mei;ZHANG Li-xiang

Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (9) : 12-15.

PDF(1316 KB)
PDF(1316 KB)
Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (9) : 12-15.
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The influence of parameters on harvesting energy from vortex-induced vibration

  • LUO Zhu-mei1,ZHANG Li-xiang2
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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.


Key words

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

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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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