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Coherence resonance in a thermoacoustic system.

作者信息

Kabiraj Lipika, Steinert Richard, Saurabh Aditya, Paschereit Christian Oliver

机构信息

Chair of Fluid Dynamics, Hermann-Föttinger-Institut (HFI), Technische Universität Berlin, D-10623 Berlin, Germany.

出版信息

Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Oct;92(4):042909. doi: 10.1103/PhysRevE.92.042909. Epub 2015 Oct 6.

DOI:10.1103/PhysRevE.92.042909
PMID:26565306
Abstract

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.

摘要

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