EXPERIMENTAL STUDY ON VORTEX-INDUCED MOTION OF FLOATING CYLINDER AT HIGH REYNOLDS NUMBER

Zhou Yang; Zhang Yilin; Li Zhongming; Wang Feng

doi:10.19912/j.0254-0096.tynxb.2022-0349

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (7) : 536-541. DOI: 10.19912/j.0254-0096.tynxb.2022-0349

EXPERIMENTAL STUDY ON VORTEX-INDUCED MOTION OF FLOATING CYLINDER AT HIGH REYNOLDS NUMBER

Zhou Yang¹, Zhang Yilin², Li Zhongming², Wang Feng²

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Abstract

In this paper, a series of cylinder model tests were carried out in a towing tank to study the vortex-induced motion （VIM） response characteristics of floating wind turbine at high Reynolds number. The cylinder tested has a diameter of 0.5 m and a length of 1 m. The sway and surge responses of the model were tested to analyze the motion trajectory, vortex shedding frequency and response amplitude. The reduced velocity is from 5.6 to 22.6, and the Reynolds number is from 75,000 to 300,000. It is shown that the response amplitude of VIM first increases and then decreases with the increase of reduction velocity. The obvious “lock-in” phenomenon occurs under the reduction velocity range of 9.4 to 13.2. In the lock-in region, the vortex shedding frequency is close to the natural frequency of 0.053 Hz, the surge frequency is twice as high as that of sway frequency and the motion trajectory of the model shows an obvious“8”shape. The amplitude of surge is much smaller than that of sway at different reduced velocities, and the sway motion is dominant.

Key words

offshore wind power / vortex-induced motion / cylinder / model test / high Reynolds number / lock-in region

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Zhou Yang, Zhang Yilin, Li Zhongming, Wang Feng. EXPERIMENTAL STUDY ON VORTEX-INDUCED MOTION OF FLOATING CYLINDER AT HIGH REYNOLDS NUMBER[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 536-541 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0349

References

[1] GLANVILLE R S, HALKYARD J E, DAVIES R L, et al.Neptune project:spar history and design considerations[C]//Offshore Technology Conference, OnePetro,Houston, Texas, 1997.
[2] VAN D, RADBOUD R T, VOOGT A, et al.The effect of mooring system and sheared currents on vortex induced motions of truss spars[C]//International Conference on Offshore Mechanics and Arctic Engineering, Cancun, Mexico, 2003, 36819: 285-292.
[3] GONCALVES R T, HANNES N H, CHAME M E F, et al. FIM-flow-induced motions of four-column platforms[J]. Applied ocean research, 2020, 95: 102019.
[4] GONCALVES R T, MENEGHINI J R, FUJARRA A L C.Vortex-induced vibration of floating circular cylinders with very low aspect ratio[J]. Ocean engineering, 2018, 154: 234-251.
[5] LIANG Y B, TAO L B, XIAO L F, et al.Experimental and numerical study on vortex-induced motions of a deep-draft semi-submersible[J]. Applied ocean research, 2017, 67: 169-187.
[6] ZHOU Y, SUN Y K, HUANG W P.CFD simulation and experimental study of similarity theories in model experiments of vortex-induced vibration[J]. Journal of ship mechanics, 2020, 24(12):1609-1624.
[7] 李伟. 基于波激和涡激Spar平台垂荡—横摇—纵摇非线性动力响应特性研究[D]. 天津: 天津大学, 2017.
LI W.Study on the nolinear coupled heave-roll-pitch motion characteristics of spar platform based on wave-excitation and vortex-excitatio[J]. Tianjin: Tianjin University, 2017.
[8] 魏东泽, 白兴兰, 黄维平, 等. 半潜式海上风力机涡激运动试验研究[J]. 太阳能学报, 2021, 42(2): 179-184.
WEI D Z, BAI X L, HUANG W P, et al.Experimental study on VIM of semi-submersible offshore wind turbine[J]. Acta energiae solaris sinica, 2021, 42(2): 179-184.
[9] 孙洪源, 黄维平, 李磊, 等. 基于实验的浮式圆柱体涡激运动研究[J]. 振动与冲击, 2017, 36(3): 93-97.
SUN H Y, HUANG W P, LI L, et al.Tests for vortex induced motions of a floating cylinder[J]. Journal of vibration and shock, 2017, 36(3): 93-97.
[10] 张新曙, 胡晓峰, 尤云祥, 等. 深海多立柱浮式平台涡激运动特性研究[J]. 力学学报, 2016, 48(3): 593-598.
ZHANG X S, HU X F, YOU Y X, et al.Investigation on the characterisitics of vortex induced motion of a deep sea muti-column floating platform[J]. Chinese journal of theoretical and applied mechanics, 2016, 48(3): 593-598.
[11] BIANCHI V, SILVA L S P, CENCI F, et al. Spoiler plate effects on the suppression of vortex-induced motions of a single circular cylinder[J]. Ocean engineering, 2020, 210: 107569.
[12] FUJARRA A L C, ROSETTI G F, DE W J, et al. State-of-art on vortex-induced motion:a comprehensive survey after more than one decade of experimental investigation[C]//International Conference on Offshore Mechanics and Arctic Engineering, Rio de Janeiro, Brazil ,American Society of Mechanical Engineers, 2012, 44915: 561-582.
[13] 李磊, 张兆德, 张吉萍, 等. 考虑流固耦合的Spar型浮式风力机涡激运动特性研究[J]. 太阳能学报, 2020, 41(1): 236-241.
LI L, ZHANG Z D, ZHANG J P, et al.Study on vortex induced motion characteristics of Spar-type floating offshore wind turbine considering fluid-structure interaction[J]. Acta energiae solaris sinica, 2020, 41(1): 236-241.