Active stall control in axial flow compressor using artificial hub stall

N. Tahara, M. Kurosaki, Yutaka Ota, E. Outa, K. Chiba

    研究成果: Conference contribution

    抄録

    Here we propose a new concept of stall suppression to expand the stable flow range of a compressor, i.e. the stall area is controlled when the flow rate is lower than the natural stall point. An artificial standing stall around the hub is formed using movable hub flaps equipped in front of the rotor for the purpose of gathering stall cells. The standing stall causes a displacement effect which is expected to increase the velocity near the tip of the rotor. In order to examine the feasibility of the new concept, a stability analysis was performed using a two dimensional actuator disk model. The compressor in hub stall condition was analyzed to be stable; the first instability at low flow rate appeared at the tip of the rotor, not the hub. Through the test using the research compressor equipped with experimental hub flaps instruments, some interesting results were obtained on the steady state performance of a hub stalled compressor. Dynamic control of the hub stalled compressor was demonstrated successfully to allow compressor operation beyond the natural stall point using proportional logic of the inlet air velocity near the tip of the rotor.

    本文言語English
    ホスト出版物のタイトル33rd Joint Propulsion Conference and Exhibit
    出版社American Institute of Aeronautics and Astronautics Inc, AIAA
    ISBN(印刷版)9780000000002
    出版ステータスPublished - 1997
    イベント33rd Joint Propulsion Conference and Exhibit, 1997 - Seattle, United States
    継続期間: 1997 7 61997 7 9

    Other

    Other33rd Joint Propulsion Conference and Exhibit, 1997
    国/地域United States
    CitySeattle
    Period97/7/697/7/9

    ASJC Scopus subject areas

    • エネルギー工学および電力技術
    • 電子工学および電気工学
    • 機械工学
    • 制御およびシステム工学
    • 航空宇宙工学

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