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Numerical analysis of unsteady aerodynamic performance of floating offshore wind turbine under platform surge and pitch motions

机译：平台浪涌浮动近海风力涡轮机不稳定空气动力学性能的数值分析

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摘要

The aerodynamic performance of floating offshore wind turbines is extremely complex due to the mo-tions of the floating platform. The surge and pitch motions are the most influential motions among the six degrees-of-freedom motions. In view of this, the aim of this study is to investigate the unsteady aerodynamic characteristics of a floating offshore wind turbine under single (surge or pitch) and combined motions using computational fluid dynamics simulations, In addition, the coupling technique of dynamic mesh and sliding mesh is employed, as well as the unsteady Reynolds averaged Navier-Stokes method. The numerical simulation method in this paper is first validated by comparison to the results of the blade element momentum method and the vortex method. Then, the aerodynamic characteristics of the floating offshore wind turbine under harmonic platform motions with different periods and amplitudes are investigated. The results show that the increase of amplitude and frequency aggravate the fluctuation of the overall aerodynamic performance of the wind turbine. In addition, the combined surge-pitch motion reduces the average power generation indicating that complex platform motions adversely affect the power generation of floating offshore wind turbines. (C) 2020 Elsevier Ltd. All rights reserved.
机译：由于浮动平台的散热，浮动海上风力涡轮机的空气动力学性能非常复杂。浪涌和俯仰运动是六种自由运动中最有影响力的动作。鉴于此，本研究的目的是研究单一（喘振或俯仰）和使用计算流体动力学模拟的浮动海上风力涡轮机的不稳定空气动力学特性，以及动态网格和滑动的耦合技术采用网格，以及不稳定的雷诺斯平均纳瓦尔斯斯托克斯方法。通过与叶片元件动量方法和涡旋方法的结果进行比较，首先验证本文的数值模拟方法。然后，研究了浮动近海风力涡轮机的空气动力学特性，在具有不同时期和振幅的谐波平台运动下。结果表明，幅度和频率的增加会加剧风力涡轮机整体空气动力学性能的波动。此外，组合的浪涌运动减少了表明复杂平台运动的平均发电不利地影响浮动近海风力涡轮机的发电。 （c）2020 elestvier有限公司保留所有权利。

著录项

  • 来源
    《Renewable energy》 |2021年第2期|1849-1870|共22页
  • 作者

    Chen Ziwen; Wang Xiaodong; Guo Yize; Kang Shun;

  • 作者单位

    North China Elect Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Elect Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Elect Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Elect Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Floating offshore wind turbine (FOWT); Surge motion; Pitch motion; Aerodynamic performance; Computational fluid dynamics (CFD);

    机译：浮动近海风力涡轮机（家禽）;浪涌运动;螺距运动;空气动力学性能;计算流体动力学（CFD）;

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