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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    Title :

    Early Detection of Thermoacoustic Combustion Oscillations in Staged Multisector Combustor


    Contributors:

    Published in:

    AIAA Journal ; 59 , 10 ; 4086-4093


    Publication date :

    2021-05-25


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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