막힘률에 따른 저선회 화염 동역학에 대한 실험적 연구Experimental Investigation of Self-excited Low-swirl Flame Dynamics with Different Blockage Ratios

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The influence of the blockage ratio on low-swirl flame dynamics was experimentally investigated in a lean-premixed combustor. Here we test five different swirl injectors, one with high swirl and four with low swirl, all with different blockage ratios (β). We analyze a large experimental dataset of self-excited instability measurements, and show that instability amplitudes for the case of β = 0.75 tend to be remarkably attenuated. This is attributed to the development of out-of-phase modulations between the jet-stabilized flame in the inner section and the swirl-stabilized flame in the outer section.
Publisher
KOREAN SOC COMBUSTION
Issue Date
2022-06
Language
Korean
Article Type
Article
Citation

JOURNAL OF THE KOREAN SOCIETY OF COMBUSTION, v.27, no.2, pp.46 - 53

ISSN
1226-0959
DOI
10.15231/jksc.2022.27.2.046
URI
http://hdl.handle.net/10203/297160
Appears in Collection
AE-Journal Papers(저널논문)
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