Self-Excited Azimuthal Instabilities in a Can-Annular Combustion System

Kihun Moon; Kyu Tae Kim

doi:10.15231/jksc.2022.27.1.009

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2022 Vol.27, Issue 1 Preview Page Next Page

Research Article

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

31 March 2022. pp. 9-16

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Abstract

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.

Keywords

Azimuthal instabilities

Can-annular combustor

Combustion instability

Cross-talk

Hydrogen

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Information

Publisher :The Korean Society Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of The Korean Society Combustion
Journal Title(Ko) :한국연소학회지
Volume : 27
No :1
Pages :9-16
Received Date : 2022-01-28
Revised Date : 2022-02-11
Accepted Date : 2022-02-17
DOI :https://doi.org/10.15231/jksc.2022.27.1.009

Journal of The Korean Society Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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