Solving piezoelectric energy acquisition problem for vortex induced vibration with Adams method

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (23) : 152-156.

Yin Zhong-jun, Zhao Jiu-song，Zhang Hang，Han Tian

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Abstract

Here, the energy acquisition problem of vortex-induced vibration in a flow-machine-electricity three-phase coupling flow around a cylinder was studied. The electro-mechanical coupled frequency and damping of the system were solved by using the matrix method, and the cylinder vibration response was obtained by solving the electromechanical coupled vibration equation with the software FLUENT. Then the electromechanical coupled output voltage and output power were solved with Adams method. The effects of external load on the electromechanical coupled output voltage and output power were investigated. Besides, the changes of electromechanical coupled output voltage with external load variation under wake interferences were examined. The results showed that the electromechanical coupled output voltage solved with Adams method has a wider frequency range; the electromechanical coupled output voltage is proportional to external load; the electromechanical coupled output power reaches its maximum value when the external load R=106 Ω; when the reduced velocity Ur is equal to 5, the electromechanical coupled damping has an obvious suppression effect on the vibration amplitude of the downstream cylinder under wake interferences.

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vortex-induced vibration / output voltage / flow-machine-electricity coupling / Adams method

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Yin Zhong-jun, Zhao Jiu-song，Zhang Hang，Han Tian. Solving piezoelectric energy acquisition problem for vortex induced vibration with Adams method[J]. Journal of Vibration and Shock, 2017, 36(23): 152-156

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