Subcritical Bifurcation of Two Self-Excited Interacting Swirl Flames

被引：5

作者：

Lee, Jiho ^{[1
]}

Park, Junhyeong ^{[2
]}

Han, Dongsik ^{[2
]}

Kim, Kyu Tae ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Aerosp Engn, Daejeon, South Korea

[2] Doosan Heavy Ind & Construct, Chang Won, South Korea

来源：

JOURNAL OF THE KOREAN SOCIETY OF COMBUSTION | 2019年 / 24卷 / 02期

关键词：

Subcritical bifurcation; Combustion instability; Swirling array; Flame-flame interaction; Hysteresis; COMBUSTION INSTABILITIES; THERMOACOUSTIC OSCILLATIONS;

D O I：

10.15231/jksc.2019.24.2.017

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The nonlinear bifurcation behavior of two self-excited interacting swirl flames was investigated in a model lean-premixed gas turbine combustor. We examined the system's thermoacoustic state using several time series analysis methods, including spectrograms, phase portraits, and recurrence plots. It was shown that the state of the system in response to the variation of the combustor length is influenced by the presence of multiple attractors, eventually leading to an extremely large amplitude limit cycle via a subcritical bifurcation.

引用

页码：17 / 24

页数：8

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