Applied Mathematics and Mechanics (English Edition) ›› 2011, Vol. 32 ›› Issue (6): 729-738.doi: https://doi.org/10.1007/s10483-011-1452-x

• 论文 • 上一篇    下一篇

Particle image velocimetry (PIV) measurements of tip vortex wake structure of wind turbine

肖金平1 武杰2 陈立2 史喆羽2   

  1. 1. College of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, P. R. China;
    2. China Aerodynamics Research and Development Center, Mianyang 621000,Sichuan Province, P. R. China
  • 收稿日期:2011-01-15 修回日期:2011-05-17 出版日期:2011-06-01 发布日期:2011-06-01
  • 基金资助:

    Project supportedbytheNationalBasicResearchProgramof China(973 Program) (No. 2007CB714600)

Particle image velocimetry (PIV) measurements of tip vortex wake structure of wind turbine

 XIAO Jin-Ping1, WU Jie2, CHEN Li2, SHI Zhe-Yu2   

  1. 1. College of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, P. R. China;
    2. China Aerodynamics Research and Development Center, Mianyang 621000,Sichuan Province, P. R. China
  • Received:2011-01-15 Revised:2011-05-17 Online:2011-06-01 Published:2011-06-01
  • Supported by:

    Project supportedbytheNationalBasicResearchProgramof China(973 Program) (No. 2007CB714600)

摘要:

Large-view flow field measurements using the particle image velocimetry (PIV) technique with high resolution CCD cameras on a rotating 1/8 scale blade model of the NREL UAE phase VI wind turbine are conducted in the engineering-oriented Φ3.2m wind tunnel. The motivation is to establish the database of the initiation and development of the tip vortex to study the flow structure and mechanism of the wind turbine. The results show that the tip vortex first moves inward for a very short period and then moves outward with the wake expansion, while its vorticity decreases with time after being trailed from the trailing edge of the blade tip, and then increases continuously with the rapid rolling-up to form a strong tip vortex. The measurements also indicate that the downstream movement of the tip vortex is nearly linear in the very near wake under the test condition.

Abstract:

Large-view flow field measurements using the particle image velocimetry (PIV) technique with high resolution CCD cameras on a rotating 1/8 scale blade model of the NREL UAE phase VI wind turbine are conducted in the engineering-oriented Φ3.2m wind tunnel. The motivation is to establish the database of the initiation and development of the tip vortex to study the flow structure and mechanism of the wind turbine. The results show that the tip vortex first moves inward for a very short period and then moves outward with the wake expansion, while its vorticity decreases with time after being trailed from the trailing edge of the blade tip, and then increases continuously with the rapid rolling-up to form a strong tip vortex. The measurements also indicate that the downstream movement of the tip vortex is nearly linear in the very near wake under the test condition.

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