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Early Detection of Thermoacoustic Combustion Oscillations in Staged Multisector Combustor
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...
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Published in: | AIAA journal 2021-10, Vol.59 (10), p.4086-4093 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | 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 Jd and the determinism of recurrence plots De, effectively capture significant changes in dynamical state during a transition from stable combustion to well-developed combustion oscillations. The feature space of the Jd−De 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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ISSN: | 0001-1452 1533-385X |
DOI: | 10.2514/1.J060268 |