캔-환형 연소기의 방위 방향 자발 불안정성Self-Excited Azimuthal Instabilities in a Can-Annular Combustion System

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Driving mechanisms of self-excited azimuthal instabilities of can-annular lean-premixed combustors were experimentally investigated in combination with 3D FEM-based eigenvalue analysis and acoustic wave decomposition method. We show that the fluctuation energy required to excite a standing azimuthal mode in annular cross-talk section is supplied locally in individual combustors by meeting the Rayleigh criterion, while the behavior in four combustor sections is dictated by degenerate longitudinal-mode at the same frequency.
Publisher
KOREAN SOC COMBUSTION
Issue Date
2022-03
Language
Korean
Article Type
Article
Citation

JOURNAL OF THE KOREAN SOCIETY OF COMBUSTION, v.27, no.1, pp.9 - 16

ISSN
1226-0959
DOI
10.15231/jksc.2022.27.1.009
URI
http://hdl.handle.net/10203/294729
Appears in Collection
AE-Journal Papers(저널논문)
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