Stall inception process and prospects for active hub-flap control in three-stage axial flow compressor

Tomoya Okada, Atsushi Kawajiri, Yutaka Ota, Eisuke Outa

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    Abstract

    The possibility to apply the active hub-flap control method, which is a proven rotating stall control method for a single-stage compressor, to a 3-stage axial compressor is experimentally discussed, where complex rotating stall inception processes are observed. The research compressor is a 3-stage one and could change the stagger angle settings for rotor blades and stator vanes. Sixteen rotor blade/stator vane configuration patterns were tested by changing stagger angle for the stator vanes. By measurement of surface-pressure fluctuation, stall inception processes are investigated and the measured pressure fluctuation data is used as a predictive signal for rotating stall. The experimental results show that the stall detection system applied to active hub-flap control in a single-stage compressor could be usefully applied to that in a 3-stage compressor with a more complex stall inception process.

    Original languageEnglish
    Pages (from-to)324-330
    Number of pages7
    JournalJournal of Thermal Science
    Volume17
    Issue number4
    DOIs
    Publication statusPublished - 2008 Dec

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    Keywords

    • Active stall control
    • Axial flow compressor
    • Rotating stall
    • Stall inception
    • Stall precursor

    ASJC Scopus subject areas

    • Condensed Matter Physics

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