PIV Measurements of Tip Vortex Wake Structure of a Wind Turbine

XIAO Jing-ping; WU Jie; CHEN Li; SHI Zhe-yu

doi:10.3879/j.issn.1000-0887.2011.06.005

Volume 32 Issue 6

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XIAO Jing-ping, WU Jie, CHEN Li, SHI Zhe-yu. PIV Measurements of Tip Vortex Wake Structure of a Wind Turbine[J]. Applied Mathematics and Mechanics, 2011, 32(6): 683-692. doi: 10.3879/j.issn.1000-0887.2011.06.005

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PIV Measurements of Tip Vortex Wake Structure of a Wind Turbine

doi: 10.3879/j.issn.1000-0887.2011.06.005

1.
College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, P. R. China;

Received Date: 2011-01-15
Rev Recd Date: 2011-05-02
Publish Date: 2011-06-15

Abstract

Abstract

Large-view flow field measurements using PIV(particle image velocimetry)technique with high resolution CCD cameras on a rotating 1/8 scale blade model of NREL UAE PhaseⅥwind turbine were conducted in the engineering-oriented Ø3.2 m wind tunnel at the Low Speed Aerodynamics Institute of China Aerodynamics Research and Development Center.The motivation behind the tests was to establish the database of the initiation and development of the tip vortex in order to investigate the flow structure and mechanism of the wind turbine.The results showed that the tip vortex firstly moved inward for a very short time and then moved outward with the wake expansion while its vorticity decreased with time after just trailed from the trailing edge of the blade tip and then increased continuously with rapid roll-up to form a strong tip vortex.The measurements also indicated that the downstream movement of the tip vortex was nearly linear in the very near wake under the test condition.
- wind turbine,
- PIV,
- tip vortex,
- flow field

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References(11)

References

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