Relation between trailing edge noise and boundary layer instability

Yasufumi Konishi, Shohei Takagi, Takuji Kurotaki, Yasuaki Kohama, Takuma Kato

    研究成果: Conference contribution

    抄録

    The purpose of the present paper is to show the acoustic feedback loop plays an important role on the frequency-selection mechanism of the tonal noise emanated from the trailing-edge of 2-D wing. For raveling the frequency-selection mechanism, a thin splitter plate placed behind the trailing edge is used to suppress the tonal noise and then an artificial acoustic disturbance by means of loud speaker is introduced into the flow. The experimental result shows that acoustic feedback loop contributes to generation of the discrete T-S wave. Further experiment lso shows that boundary layer only accepts acoustic disturbance with favorable frequency, which results in the step-like structures against the distance between speaker and wing model.

    本文言語English
    ホスト出版物のタイトルICAS Secretariat - 26th Congress of International Council of the Aeronautical Sciences 2008, ICAS 2008
    ページ3365-3371
    ページ数7
    2
    出版ステータスPublished - 2008 12月 1
    イベント26th Congress of International Council of the Aeronautical Sciences 2008, ICAS 2008 - Anchorage, AK, United States
    継続期間: 2008 9月 142008 9月 19

    Other

    Other26th Congress of International Council of the Aeronautical Sciences 2008, ICAS 2008
    国/地域United States
    CityAnchorage, AK
    Period08/9/1408/9/19

    ASJC Scopus subject areas

    • 航空宇宙工学
    • 制御およびシステム工学
    • 電子工学および電気工学
    • 材料科学(全般)

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