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ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (10): 152-158.DOI: 10.19912/j.0254-0096.tynxb.2021-0729

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Spar型浮式风力机涡激运动特性及其抑制研究

肖阳宏, 李磊, 张兆德, 李文丽   

  1. 浙江海洋大学船舶与海运学院,舟山 316022
  • 收稿日期:2021-06-28 出版日期:2022-10-28 发布日期:2023-04-28
  • 通讯作者: 李磊(1985——),男,博士、讲师,主要从事浮体结构水动力方面的研究。lileizjou@163.com
  • 基金资助:
    省属高校基本科研业务费(2021J006); GK新苗人才计划(24127000107); 舟山市科技计划(2019C21022)

STUDY ON VORTEX-INDUCED MOTION CHARACTERISTICS AND SUPPRESSION OF SPAR-TYPE FLOATING OFFSHORE WIND TURBINE

Xiao Yanghong, Li Lei, Zhang Zhaode, Li Wenli   

  1. School of Naval Architecture and Maritime, Zhejiang Ocean University, Zhoushan 316022, China
  • Received:2021-06-28 Online:2022-10-28 Published:2023-04-28

摘要: 为减轻涡激运动对系泊结构的疲劳破坏,提出一种波纹柱体结构,探讨其涡激运动特性及抑制机理。结构与流体的非线性耦合作用通过用户自定义函数(UDF)和动网格技术实现,运动微分方程采用四阶龙格-库塔法求解。研究发现,波纹柱体与裸圆柱结构的涡激运动特性明显不同。裸圆柱随折合速度的增加呈明显的锁定特性,而波纹柱体结构的涡激响应特性与波纹高度Hw/D相关。当波纹高度Hw/D=0.01和0.05时亦会发生锁定现象,但锁定区间较裸圆柱小,当波纹高度Hw/D=0.02~0.04时结构不再发生锁定问题。结果表明,波纹结构对柱体的涡激运动有明显抑制作用。

关键词: 海上浮式风力机, 流固耦合, 干扰抑制, 龙格-库塔法, 波纹柱体

Abstract: In order to mitigate the fatigue damage of the riser and mooring system by vortex-induced motion(VIM), in the present work, a numerical simulation for the characteristics of VIM and suppression mechanism of a new wavy cylindrical structure is proposed. The nonlinear coupling interaction between the structure and fluid is performed by user-defined function (UDF) and dynamic mesh techniques,and the differential equations of motion are solved by the fourth-order Runge-Kutta methods. It was found that the VIM characteristics of the wavy cylinders and cylinder were significantly different. The cylinder shows a significant lock-in characteristic with the increasing reduced velocity,while the response characteristic of the wavy cylinders are related to the wave height Hw/D. The lock-in phenomenon also occurs when the wave height is Hw/D=0.01 and 0.05,but the lock-in region is smaller than that of circular cylinder,and the lock-in problem is no longer occurs when the wavy height is Hw/D=0.02-0.04. The results show that the wavy cylinders have a significant suppression effect on the VIM.

Key words: offshore wind turbines, fluid structure interaction, interference suppression, Runge Kutta method, wavy cylinders

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