Design and Wind-Tunnel Verification of Large-Size Wind Turbine Airfoils
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摘要: 翼型是构成风力机叶片的基本要素,是风力机叶片设计的基础.发展适用于大型风力机叶片的高性能翼型,对于提高其风能捕获能力、减少重量以节约制造和运输成本、减轻惯性载荷和阵风载荷等具有重要意义.首先,回顾了上个世纪90年代以来风力机翼型族研究的发展历程,介绍了国外发展的S系列、DU系列、RIS系列、FFA系列等翼型族.其次,针对兆瓦级大型风力机翼型设计的技术要求,介绍了西北工业大学NPU-WA翼型族的设计、风洞实验及改进.最后,给出了多兆瓦级风力机翼型族的研究展望.Abstract: For a family of specially tailored airfoils, the shapes of sections along the span of the blades are the most important elements for design of wind turbine blades. The airfoils with excellent performance can dramatically improve the capability of capturing wind power, reducing structural weight to save cost of manufacturing and transportation, and lowering inertial loads as well as loads due to gust. First, the development of the main wind turbine airfoil families around the world since 1990’s was reviewed, such as S series, DU series, RIS series, and FFA series. Second, the progress of NPU-WA series for megawatt-size wind turbine was summarized, including the design process and wind-tunnel experiments. Model tests were carried out in NF-3 wind-tunnel’s two dimensional test section, which was the largest low-speed two dimensional test section in Asia with the Reynolds number up to 5 millions. The further improvement of NPU-WA airfoils for lower roughness sensitivity was also reviewed. Last, the outlook on developing new NPU-WA series for multi-megawatt wind turbines in the near future was presented.
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Key words:
- wind-turbine airfoil /
- NPU-WA airfoil family /
- airfoil design /
- wind-tunnel experiment
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