Active stall control in axial flow compressor using artificial hub stall

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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    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.

    Original languageEnglish
    Title of host publication33rd Joint Propulsion Conference and Exhibit
    PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
    ISBN (Print)9780000000002
    Publication statusPublished - 1997
    Event33rd Joint Propulsion Conference and Exhibit, 1997 - Seattle, United States
    Duration: 1997 Jul 61997 Jul 9


    Other33rd Joint Propulsion Conference and Exhibit, 1997
    Country/TerritoryUnited States

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering
    • Mechanical Engineering
    • Control and Systems Engineering
    • Aerospace Engineering


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