Attenuation of thermoacoustic combustion oscillations in a swirl-stabilized turbulent combustor

被引：7
|
作者：
Kurosaka, Takuya [1 ]
Masuda, Shinga [1 ]
Gotoda, Hiroshi [1 ]
机构：
[1] Tokyo Univ Sci, Dept Mech Engn, Katsushika Ku, 6-3-1 Niijuku, Tokyo 1258585, Japan
来源：
CHAOS | 2021年 / 31卷 / 07期
关键词：
OPEN-LOOP CONTROL; INSTABILITY;
D O I：
10.1063/5.0045127
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
We experimentally study the attenuation behavior of thermoacoustic combustion oscillations using causality analysis, multiscale randomness analysis, and a complex network. We supply a steady air jet from the injector rim to suppress combustion oscillations. The directional coupling between pressure and heat release rate fluctuations is significantly weakened during the suppression of combustion oscillations. The loss of the primary hub in the turbulence network plays an important role in the degeneration of combustion oscillations. Published under an exclusive license by AIP Publishing.
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页数：8
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