羽ばたき運動中に生じる渦と空気力と空力音の発生に関する研究

機関リポジトリ

書誌事項

タイトル別名
  • Numerical Analysis of Generation of Sound, Aerodynamic Force, and Vortices Associated with Flapping Wing Motion

説明

第51回流体力学講演会/第37回航空宇宙数値シミュレーション技術シンポジウム (2019年7月1日-3日. 早稲田大学早稲田キャンパス国際会議場), 新宿区, 東京

51st Fluid Dynamics Conference / the 37th Aerospace Numerical Simulation Symposium (July 1-3, 2019. International Conference Center, Waseda University), Shinjuku-ku, Tokyo, Japan

Numerical simulations with a high-resolution computational scheme are conducted to investigate the three-dimensional flow around a plunging and pitching wing. The figure-eight wing motion is considered based on observations of the hovering flight of bumblebee Bombus terrestris. The Reynolds number is 8800 and Mach number is 0.0485 based on the chord length and the maximum translational velocity of the wing. Fluid dynamics, aerodynamic force generation, and sound generation are analyzed and discussed. Computed results indicate that most of the aerodynamic forces are generated in the transverse motion of the wing due to the downwash and the production of the leading-and trailing-edge vortices. It is found that the generation of the dipole-like vortical structure and the interaction between the leading- and trailing-edge separated shear layers seem to be main source of the sound generated from the plunging and pitching wing.

形態: カラー図版あり

Physical characteristics: Original contains color illustrations

資料番号: AA1930011018

レポート番号: JAXA-SP-19-007

収録刊行物

詳細情報 詳細情報について

  • CRID
    1050855511200646784
  • NII論文ID
    120006839159
  • ISSN
    24332232
  • Web Site
    http://id.nii.ac.jp/1696/00046348/
  • 本文言語コード
    ja
  • 資料種別
    conference paper
  • データソース種別
    • IRDB
    • CiNii Articles

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