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Countermeasure for reducing the aeroacoustic noise from vertical axis wind turbine

Research Project

Project/Area Number 17K00662
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Design and evaluation of sustainable and environmental conscious system
Research InstitutionKanazawa University

Principal Investigator

Kono Takaaki  金沢大学, 機械工学系, 准教授 (90630921)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords垂直軸風車 / 空力騒音 / 出力特性 / 騒音低減 / 風洞実験 / 数値流体力学解析 / アーム / CFD解析 / セレーション / トリップワイヤ / マイクロフォンアレイ / 断面形状 / 数値流体解析 / 風力 / 直線翼垂直軸風車 / 音響解析
Outline of Final Research Achievements

We investigated the effects of the cross-sectional shape of the arms of a straight-bladed vertical axis wind turbine (VAWT) and the shape of the serrations attached to the trailing edge of the VAWT's blades on the characteristics of the power and aerodynamic noise of the VAWT. We developed a new cross-sectional shape of the VAWT's arms that significantly lowers the aerodynamic noise while not significantly worsening the power output characteristics. In addition, we clarified that the variation of the surface pressure, which is the source of the aerodynamic noise, over the arms near the blades is significantly high. Moreover, we clarified that the serrations significantly lower the aerodynamic noise, although the power output characteristics are also significantly worsened.

Academic Significance and Societal Importance of the Research Achievements

垂直軸風車は、市街地空間への導入事例が増えてきているが、騒音の研究事例は非常に少なく、十分な騒音低減対策が施されていない。本研究では、空気抵抗の小さい翼型のアームに比べて、出力特性を著しく損なうことなく、騒音レベルを顕著に低減するアーム形状を考案した。さらに、風車翼とアームの接合部付近が顕著な騒音源となっている可能性が高いことを明らかにした。即ち、この接合部付近のアーム形状に本研究で考案した形状を適用することで、市街地空間に導入する垂直軸風車の低騒音化が進展するものと考えられる。セレーションについては、騒音レベルは低下するが、出力特性も顕著に低下するため、さらなる形状の検討が必要である。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (12 results)

All 2019 2018 2017 Other

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (10 results) (of which Int'l Joint Research: 3 results) Remarks (1 results)

  • [Journal Article] Wind tunnel experiments and Delayed Detached Eddy Simulation of a three-bladed micro vertical axis wind turbine2018

    • Author(s)
      Elkhoury M.、Kiwata T.、Nagao K.、Kono T.、ElHajj F.
    • Journal Title

      Renewable Energy

      Volume: 129 Pages: 63-74

    • DOI

      10.1016/j.renene.2018.05.096

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] アーム断面形状が直線翼ダリウス風車の出力特性及び空力騒音特性に与える影響2019

    • Author(s)
      安田進之介,濱田健太郎, 河野孝昭,木綿隆弘, 小松信義
    • Organizer
      第41回風力エネルギー利用シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] アーム断面形状がH型ダリウス風車の出力特性及び空力騒音特性に与える影響2019

    • Author(s)
      安田進之介,河野孝昭,木綿隆弘,小松信義
    • Organizer
      流体工学シンポジウム2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 直線翼ダリウス風車の翼表面に取付けたトリップワイヤが出力・空力騒音に与える影響2019

    • Author(s)
      濱田健太郎,河野孝昭,木綿隆弘,小松信義
    • Organizer
      日本機械学会北陸信越支部第56期総会・講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Study on the Characteristic of the Aeroacoustic Noise of a Straight-bladed Vertical-axis Wind Turbine2018

    • Author(s)
      Hamada K., Yasuda S., Kono T., Kiwata T., Komatsu N.
    • Organizer
      Grand Renewable Energy 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of the Arm’s Cross-sectional Shape on the Aeroacoustic Noise of a Straight-bladed Darrieus Wind Turbine2018

    • Author(s)
      Hamada K., Yasuda S., Kono T., Kiwata T., Komatsu N.
    • Organizer
      13th International Symposium on Advanced Science and Technology in Experimental Mechanics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 直線翼垂直軸風車の出力と空力騒音に関する研究2018

    • Author(s)
      濱田健太郎, 河野孝昭, 木綿隆弘, 小松信義
    • Organizer
      第4回RSET主催市民向けセミナー
    • Related Report
      2018 Research-status Report
  • [Presentation] 直線翼垂直軸風車の翼弦長が空力騒音に与える影響2018

    • Author(s)
      濱田健太郎, 齋藤佳輝, 河野孝昭, 木綿隆弘, 小松信義
    • Organizer
      日本機械学会北陸信越支部第55期総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Effects of the arm's cross-sectional shape on the aeroacoustic noise of a straight-bladed vertical-axis wind turbine2017

    • Author(s)
      Hamada,K. Saito,Y. Kono,T. Kiwata,T. Komatsu,N.
    • Organizer
      International Conference on Materials and Systems for Sustainability 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 直線翼垂直軸風車のアーム断面形状が空力騒音に与える影響2017

    • Author(s)
      濱田健太郎, 齋藤佳輝, 河野孝昭, 木綿隆弘, 小松信義
    • Organizer
      第39回風力エネルギー利用シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 直線翼垂直軸風車のアーム断面形状が空力騒音に与える影響2017

    • Author(s)
      濱田健太郎, 齋藤佳輝, 河野孝昭, 木綿隆弘, 小松信義
    • Organizer
      第4回サステナブルエネルギー研究センター公開シンポジウム
    • Related Report
      2017 Research-status Report
  • [Remarks] 金沢大学流体工学研究室

    • URL

      http://www.ms.t.kanazawa-u.ac.jp/~fluid/

    • Related Report
      2018 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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