Coherence resonance in a thermoacoustic system
Physical Review E, 2015•APS
We experimentally investigated the noise-induced dynamics of a prototypical
thermoacoustic system undergoing a subcritical Hopf bifurcation to limit cycle oscillations.
The study was performed prior to the bistable regime. Analysis of the characteristics of
pressure oscillations in the combustor and fluctuations in the heat release rate from the
flame—the two physical entities involved in thermoacoustic coupling—at increasing levels of
noise indicated precursors to the Hopf bifurcation. These precursors were further identified …
thermoacoustic system undergoing a subcritical Hopf bifurcation to limit cycle oscillations.
The study was performed prior to the bistable regime. Analysis of the characteristics of
pressure oscillations in the combustor and fluctuations in the heat release rate from the
flame—the two physical entities involved in thermoacoustic coupling—at increasing levels of
noise indicated precursors to the Hopf bifurcation. These precursors were further identified …
We experimentally investigated the noise-induced dynamics of a prototypical thermoacoustic system undergoing a subcritical Hopf bifurcation to limit cycle oscillations. The study was performed prior to the bistable regime. Analysis of the characteristics of pressure oscillations in the combustor and fluctuations in the heat release rate from the flame—the two physical entities involved in thermoacoustic coupling—at increasing levels of noise indicated precursors to the Hopf bifurcation. These precursors were further identified to be a result of coherence resonance.
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