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Characterizing the signature of flame flashback precursor through recurrence analysis
Loizos Christodoulou1, Lipika Kabiraj2, Aditya Saurabh2
1School of Engineering, University of Glasgow, Glasgow, United Kingdom.
Precursors to flame flashback were detected using dynamical changes in recurrence plots. These changes, indicating increased determinism, signal impending flashback events, offering potential for early warning systems.
Area of Science:
- Combustion science
- Dynamical systems analysis
Background:
- Flame flashback is a critical phenomenon in combustion systems.
- Predicting flashback is essential for safety and efficiency.
Purpose of the Study:
- To identify detectable precursors to flame flashback.
- To investigate dynamical changes preceding flashback events.
Main Methods:
- Reconstruction of multidimensional phase space from pressure measurements.
- Analysis of recurrence plots to detect dynamical changes.
- Quantification of determinism and recurrence rate.
Main Results:
- Small dynamical changes observed prior to flashback.
- These changes manifest as a drift in recurrence plots.
- A gradual increase in determinism and recurrence rate was associated with impending flashback.
Conclusions:
- Precursors to flame flashback exist and are detectable.
- Recurrence plot analysis of pressure data can identify these precursors.
- This finding has significant academic and industrial implications for combustion safety.
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