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Experimental study on unsteady aerodynamic characteristics of deformed blades for vertical axis wind turbine

机译：垂直轴风风力涡轮机变形叶片不稳定空气动力学特性的实验研究

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摘要

Based on the self-deforming blade model and the related wind tunnel test platform, the experiments with synchronous deformation and pitch of the blade were carried out to simulate the operating condition of the blade on the vertical axis wind turbine (VAWT). Taking NACA0012 as the reference blade, the unsteady aerodynamic characteristics of the blade deformation at different deformation frequencies and amplitudes were investigated at low Reynolds number of 2.5 x 10(5). It is found that the maximum lift force of the blade with deformation amplitude of 0.06c is raised by nearly 60% compared with that of the rigid blade. Secondly, by applying the same deceleration frequency, same pitch amplitude and different initial angles of attack to the blade, it is observed that the flow hysteresis phenomena are obviously different from that of applying various synchronous pitch and deformation amplitudes, and the special aerodynamic characteristic curves are obtained. The lift force increases significantly with the rise of deformation amplitude and drag force, while the lift-drag ratio increases in one cycle. The study in this paper proves the applicability of the blade with this deformation law in the VAWT, and provides a reference for its application on the design of VAWT. (C) 2021 Elsevier Ltd. All rights reserved.
机译：基于自变形刀片模型和相关的风洞测试平台，进行了同步变形和叶片间距的实验，以模拟垂直轴风力涡轮机（VAWT）上刀片的操作条件。将NaCA0012作为参考刀片，在低雷诺数为2.5×10（5）的低雷诺数，研究了不同变形频率和振幅下的叶片变形的不稳定空气动力学特性。结果发现，与刚性叶片的相比，具有变形幅度为0.06℃的叶片的最大提升力近60％。其次，通过向刀片施加相同的减速频率，相同的距振幅和不同的攻击角度，观察到流动滞后现象显然与施加各种同步间距和变形幅度，以及特殊的空气动力学特征曲线获得。随着变形幅度和拖曳力的升高，提升力显着增加，而升力比在一个循环中增加。本文的研究证明了叶片在VAWT中具有这种变形法的适用性，并为其对VAWT设计的应用提供了参考。 （c）2021 elestvier有限公司保留所有权利。

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  • 来源
    《Renewable energy》 |2021年第8期|808-826|共19页
  • 作者

    Tong Hui; Wang Ying;

  • 作者单位

    Univ Shanghai Sci & Technol Sch Energy & Power Engn Shanghai Key Lab Multiphase Flow & Heat Transfer Shanghai 200093 Peoples R China|COMAC Shanghai Aircraft Customer Serv Co Ltd Shanghai 200126 Peoples R China;

    Univ Shanghai Sci & Technol Sch Energy & Power Engn Shanghai Key Lab Multiphase Flow & Heat Transfer Shanghai 200093 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

    Experiment; Unsteady aerodynamic characteristics; Vertical axis wind turbines; Deformed blades;

    机译：实验;不稳定的空气动力学特性;垂直轴风力涡轮机;变形刀片;

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