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中国科学院大学学报 ›› 2013, Vol. 30 ›› Issue (4): 568-571.DOI: 10.7523/j.issn.2095-6134.2013.04.020

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风力机叶片后掠对径向流动的影响

陈洪胜1,2, 石可重1, 徐建中1   

  1. 1. 中国科学院工程热物理研究所, 北京 100190;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2012-05-09 修回日期:2012-11-27 发布日期:2013-07-15
  • 通讯作者: 陈洪胜
  • 基金资助:

    国家能源应用技术研究及工程示范项目(NY20110601-1)资助 

Radial flow on aft-swept wind turbine blades

CHEN Hong-Sheng1,2, SHI Ke-Zhong1, XU Jian-Zhong1   

  1. 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-05-09 Revised:2012-11-27 Published:2013-07-15

摘要:

以NREL Phase VI 实验叶片为基础设计了一种后掠型风力机叶片,通过CFD计算模拟,发现后掠叶片的绕流中存在更复杂的径向流动,主要表现在后掠段吸力面流线在前缘附近向叶轮旋转中心偏转,在尾缘附近向叶尖方向明显偏转. 分析得出,叶片后掠改变了入流状态,使得后掠段吸力面流线在前缘附近向叶轮旋转中心偏转;在尾缘附近,其与离心力和科氏力的共同作用使得流动向叶尖发生明显偏转.

关键词: 风力机, 后掠叶片, 气动, 计算流体力学

Abstract:

A swept blade was designed based on NREL phase VI test blade. The CFD simulation results show significant radial flow on the aft-swept blade. The flow around aft-swept section turns to the rotor center around leading edge and turns to blade tip around trailing edge arresting. The analyses indicate that blade aft-sweeping transforms the flow condition, and it turns streamline around leading edge to rotor center and turns streamline around trailing edge to blade tip with coaction of centrifugal force and Coriolis force.

Key words: wind turbine, aft-swept blade, aerodynamics, CFD

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