NUMERICAL SIMULATION OF ENERGY HARVESTING FROM FLOW-INDUCED VIBRATION OF DIFFERENT DIAMETER CYLINDERS

Guo Kai; Cheng Yuxuan; Tang Bowen; Fan Xiantao; Tan Wei; Zhang Hongsheng

doi:10.19912/j.0254-0096.tynxb.2022-0714

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (9) : 1-8. DOI: 10.19912/j.0254-0096.tynxb.2022-0714

NUMERICAL SIMULATION OF ENERGY HARVESTING FROM FLOW-INDUCED VIBRATION OF DIFFERENT DIAMETER CYLINDERS

Guo Kai^1,2, Cheng Yuxuan¹, Tang Bowen³, Fan Xiantao³, Tan Wei³, Zhang Hongsheng^1,2

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Abstract

To investigate the application prospects and energy harvesting characteristics of two tandem cylinder with different diameter ratios in the field of wind vibration power generation,the vibration response and energy conversion characteristics of a two tandem cylinder system with different diameters are investigated under the condition of L/D=1.5, where the upstream cylinder is fixed and the downstream cylinder only vibrates in the transverse direction. The results indicate that the downstream cylinder exhibits both vortex-induced vibration and galloping vibration response, and the diameter ratio affects the vibration response and force characteristics of the downstream cylinder, which leads to the change of the lock-in velocity range. The galloping exhibits a harvesting power two times larger than the vortex-induced vibration. The energy conversion efficiency can be about 30% in the vortex-excited vibration region, but only 10% in galloping region. Based on these analysis results, the advantage of d/D=0.8 energy conservation is more notable at low reduced velocity, but at high reduced velocity, the advantage of d/D=0.6 energy conservation become more significant.

Key words

energy conversion / computational fluid dynamics / wind energy / flow-induced vibration / diameter ratio / dynamic response

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Guo Kai, Cheng Yuxuan, Tang Bowen, Fan Xiantao, Tan Wei, Zhang Hongsheng. NUMERICAL SIMULATION OF ENERGY HARVESTING FROM FLOW-INDUCED VIBRATION OF DIFFERENT DIAMETER CYLINDERS[J]. Acta Energiae Solaris Sinica. 2023, 44(9): 1-8 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0714

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