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Elucidation of the unstable flight mechanism of butterflies aiming at a breakthrough in the development of micro air vehicles

Research Project

Project/Area Number 19K14885
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionShinshu University

Principal Investigator

Suzuki Kosuke  信州大学, 学術研究院工学系, 准教授 (10735179)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords羽ばたき飛翔 / 数値流体力学 / 超小型飛翔体 / 3次元動体追跡 / 流体工学
Outline of Research at the Start

これまで研究代表者は,チョウの不安定な飛翔メカニズムの解明のために,単純な数値モデル(チョウを模した羽ばたき翼--胴体モデル)を構築し,そのモデルを徐々に実際の蝶に近づけていくというボトムアップ的アプローチで,多くの性質を明らかにしてきた.しかし,チョウがどのように速い前進速度と巧みな姿勢制御を実現しているかを説明できていない.
本研究では,この二つの問題を解明することを目的として,実際のチョウの飛翔を動画で撮影し,翼を前後に振る運動や前後2枚の翼の動作の遅れを始めとした特徴的な動作を抽出する(トップダウン的アプローチ).さらにその動作をモデルに搭載し,流体力学の観点からその効果を考察する.

Outline of Final Research Achievements

We investigated the flapping flight of butterflies to elucidate how butterflies achieve their fast forward speed and skillful attitude control. We captured the motion of a butterfly in take-off or in forward flight by using high speed cameras, and we obtained time series data of its trajectory and joint angles. By using these data, we constructed a numerical butterfly model which faithfully reflects the shape and movement of the actual butterfly. We clarified the relationship between the motion and the aerodynamic and inertial forces through coupling simulations of the butterfly model and ambient air by using the immersed boundary-lattice Boltzmann method. In addition, we attempted some attitude control schemes by abdominal motion, phase shift between fore- and hind-wings, and lead-lag motion of wings through simulations using a simplified model, but the results had a large difference from the motion of an actual butterfly. A realistic attitude control remains for future work.

Academic Significance and Societal Importance of the Research Achievements

研究期間内に実施した研究はいずれも,蝶の飛翔メカニズムを解明するための基礎的な研究であり,実際のモノ(超小型飛翔体)への応用はまだできていない.しかしながら,本研究を通して,蝶の飛翔メカニズムに関して多くのことが明らかになるとともに,蝶の巧みな姿勢制御を応用できる可能性があることが示唆されている.これらの知見を用いて超小型飛翔体を設計できれば,今までにない小型・軽量でかつ俊敏なドローンが開発できると期待される.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (22 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Book (1 results)

  • [Int'l Joint Research] Rutgers University(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Revisiting the flight dynamics of take-off of a butterfly: experiments and CFD simulations for a cabbage white butterfly2022

    • Author(s)
      Suzuki Kosuke、Nakamura Masashi、Kouji Masaya、Yoshino Masato
    • Journal Title

      Biology Open

      Volume: 11 Issue: 3 Pages: 1-15

    • DOI

      10.1242/bio.059136

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Local force calculations by an improved stress tensor discontinuity-based immersed boundary-lattice Boltzmann method2021

    • Author(s)
      Suzuki Kosuke, Ishizaki Kou, Yoshino Masato
    • Journal Title

      Physics of Fluids

      Volume: 33 Issue: 4 Pages: 047104-047104

    • DOI

      10.1063/5.0044268

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparative study between a discrete vortex method and an immersed boundary?lattice Boltzmann method in 2D flapping flight analysis2020

    • Author(s)
      Suzuki Kosuke、Kato Takeshi、Tsue Kotaro、Yoshino Masato、Denda Mitsunori
    • Journal Title

      International Journal of Modern Physics C

      Volume: 32 Issue: 01 Pages: 2150005-2150005

    • DOI

      10.1142/s0129183121500054

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of wing mass on the free flight of a butterfly-like model using immersed boundary-lattice Boltzmann simulations2019

    • Author(s)
      Suzuki K.、Okada I.、Yoshino M.
    • Journal Title

      Journal of Fluid Mechanics

      Volume: 877 Pages: 614-647

    • DOI

      10.1017/jfm.2019.597

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of chordwise wing flexibility on flapping flight of a butterfly model using immersed-boundary lattice Boltzmann simulations2019

    • Author(s)
      Suzuki Kosuke、Aoki Takaaki、Yoshino Masato
    • Journal Title

      Physical Review E

      Volume: 100 Issue: 1 Pages: 1-16

    • DOI

      10.1103/physreve.100.013104

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Fight Dynamics in Forward Flights of a Cabbage White Butterfly2022

    • Author(s)
      Kosuke Suzuki、Masaya Kouji、Masato Yoshino
    • Organizer
      The 7th International Conference on Jets, Wakes and Separated Flows
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Some attempts to reproduce the pitching attitude control of butterflies through immersed boundary-lattice Boltzmann simulations2022

    • Author(s)
      Kosuke Suzuki
    • Organizer
      JSPS/SAC SEMINAR ON GAS KINETIC/DYNAMICS AND LIFE SCIENCE
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 蝶を模した羽ばたき翼―胴体モデルにおける腹部の運動による胸部角の動的制御2021

    • Author(s)
      石﨑攻、鈴木康祐、吉野正人
    • Organizer
      第19回日本流体力学会中部支部講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 異なる飛翔形態における蝶の飛翔解析: 計測実験と計算モデルを用いた数値計算2021

    • Author(s)
      糀真哉、鈴木康祐、吉野正人
    • Organizer
      第19回日本流体力学会中部支部講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 蝶を模した羽ばたき翼-胴体モデルの飛翔時における胸部と腹部の運動の関係2021

    • Author(s)
      石﨑攻、鈴木康祐、吉野正人
    • Organizer
      日本流体力学会2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 前進飛翔時における蝶の飛翔解析:計測実験と計算モデルを用いた数値計算2021

    • Author(s)
      糀真哉、中村優志、木村晃樹、鈴木康祐、吉野正人
    • Organizer
      日本流体力学会2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] Numerical simulations of a butterfly-like flapping wing-body model: effects of wing planform, mass, and flexibility2020

    • Author(s)
      Kosuke Suzuki
    • Organizer
      Interdisciplinary Online Seminar Series on Biolocomotion
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 蝶を模した二次元羽ばたき翼におけるwing-wake interactionによる影響2020

    • Author(s)
      石﨑攻, 鈴木康祐, 吉野正人
    • Organizer
      日本流体力学会年会2020
    • Related Report
      2020 Research-status Report
  • [Presentation] 蝶の飛び立ち時における動きの計測およびその動きを反映した計算モデルを用いた数値計算2020

    • Author(s)
      中村優志, 鈴木康祐, 吉野正人
    • Organizer
      日本流体力学会年会2020
    • Related Report
      2020 Research-status Report
  • [Presentation] トンボを模した羽ばたき翼-胴体モデルによる任意点でのホバリングへの目標飛翔の数値計算2020

    • Author(s)
      仁科柊, 鈴木康祐, 吉野正人
    • Organizer
      日本流体力学会年会2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Effect of chord-wise wing flexibility on the flapping flight by a butterfly-like 3D flapping wing-body model2019

    • Author(s)
      Kosuke Suzuki, Takaaki Aoki, Masato Yoshino
    • Organizer
      72nd Annual Meeting of APS Division of Fluid Dynamics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 埋め込み境界-格子ボルツマン法を用いた蝶を模した羽ばたき翼-胴体モデルの羽ばたき飛翔に対する前翼・後翼の動作の差の影響2019

    • Author(s)
      日置文弥,鈴木康祐, 吉野正人
    • Organizer
      第33回数値流体力学シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] 埋め込み境界-格子ボルツマン法を用いた蝶を模した羽ばたき翼-胴体モデルの羽ばたき飛翔における翼長方向の翼の柔軟性の影響2019

    • Author(s)
      津江耕太郎,鈴木康祐, 吉野正人
    • Organizer
      第33回数値流体力学シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] 蝶を模した羽ばたき翼-胴体モデルの空力性能に対する前翼・後翼の動作の差の影響2019

    • Author(s)
      日置文弥,鈴木康祐, 吉野正人
    • Organizer
      日本流体力学会年会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 蝶を模した羽ばたき翼-胴体モデルの空力性能に対する翼長方向の翼の柔軟性の影響2019

    • Author(s)
      津江耕太郎,鈴木康祐, 吉野正人
    • Organizer
      日本流体力学会年会2019
    • Related Report
      2019 Research-status Report
  • [Book] 格子ボルツマン法入門2020

    • Author(s)
      稲室 隆二、吉野 正人、鈴木 康祐
    • Total Pages
      176
    • Publisher
      丸善出版
    • ISBN
      9784621304761
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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