We attempt to detect a precursor of thermoacoustic combustion oscillations in a staged multisector combustor for an aeroengine by the combined methodology of recurrence-based analysis and machine learning. Combustion experiments are conducted at the combustor inlet temperature and pressure of 740 K and 1340 kPa, respectively. The joint dimensional vicinity J d and the determinism of recurrence plots D e , effectively capture significant changes in dynamical state during a transition from stable combustion to well-developed combustion oscillations. The feature space of the J d D e plane, which is obtained using a support vector machine, is found to be a promising tool for detecting a precursor of combustion oscillations with increasing main fuel flow rate while maintaining the pilot fuel flow rate.


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    Titel :

    Early Detection of Thermoacoustic Combustion Oscillations in Staged Multisector Combustor


    Beteiligte:
    Shinchi, Yuhei (Autor:in) / Takeda, Naohiro (Autor:in) / Gotoda, Hiroshi (Autor:in) / Shoji, Takeshi (Autor:in) / Yoshida, Seiji (Autor:in)

    Erschienen in:

    AIAA Journal ; 59 , 10 ; 4086-4093


    Erscheinungsdatum :

    2021-05-25


    Format / Umfang :

    8 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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