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http://dx.doi.org/10.15231/jksc.2018.23.1.021

Swirl Flow Effects on Flame-Flame Interactions in a Model Lean-Premixed Gas Turbine Combustor  

Lee, Jiho (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
Park, Junhyeong (Doosan Heavy Industry & Construction)
Han, Dongsik (Doosan Heavy Industry & Construction)
Kim, Kyu Tea (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of the Korean Society of Combustion / v.23, no.1, 2018 , pp. 21-27 More about this Journal
Abstract
The effect of swirl flow structures on combustion dynamics of two interacting, lean-premixed flames was experimentally investigated, with a particular emphasis on swirl numbers and swirl rotational directions. Our results show that the amplitude of limit cycle oscillations is very sensitive to the combination of swirl numbers and rotational directions, while the instability frequency remains nearly unchanged. The counter-rotating cases show significantly lower pressure perturbations, and this behavior appears to be related to the formation of compact interacting zone with higher heat release rate, indicating the presence of increased flame surface wrinkling caused by intense turbulence.
Keywords
Combustion instability; Flame-flame interactions; Lean-premixed combustion; Swirling array; Swirl number;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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