Forced synchronization of globally stable and unstable flames

2025/06/03 by Manikandan Balasubramaniyan, Linghan Chen, Wen Ao +3 · 1 voice
Engineering · Computer Science · Chemical Engineering · #Combustion and flame dynamics #Nonlinear Dynamics and Pattern Formation #Advanced Combustion Engine Technologies

paper · doi:10.1103/physrevfluids.10.063201

openalex publication_date 2025/06/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

We produced globally unstable (sinusoidal mode) and stable flames (varicose mode) with equivalence ratios of 0.47 and 0.51, respectively. When these flames were subjected to different forcing frequencies and amplitudes, they exhibited heat release rate (HRR) amplitude suppression and resonance. However, under higher detuning conditions, both flames showed amplitude suppression, with the globally unstable flame exhibiting greater suppression. We also found that the HRR amplitude suppression is not uniform throughout the flame and shows spatial variations.

Citations

• Dynamics and stability of lean-premixed swirl-stabilized combustion
• FEEDBACK CONTROL OF COMBUSTION OSCILLATIONS
• Sensitivity and Nonlinearity of Thermoacoustic Oscillations

Discussions

• Probability of recurrence (estimated from #recurrence_plot) used to study forced synchronization of globally stable and unstable flames doi.org/10.1103/Phys... [bsky, 0 points, 0 comments]