FIR과 FGR 기법이 적용된 메탄-공기 대향류 확산화염에서 화염구조와 NO 배출 연구

• Published in: 한국연소학회지 Vol. 21; no. 1; pp. 38 - 45
• Main Authors: 박정(Jeong Park), 권오붕(Oh Boong Kwon), 김세원(Sewon Kim), 이창엽(Changyeop Lee), 길상인(Sang-In Keel), 윤진한(Jin-Han Yun), 임인권(In Gweon Lim)
• Format: Journal Article
• Language: Korean
• Published: 한국연소학회 2016
• Subjects: 기계공학; FGR; Flame extinction; NO emission; FIR; Radiation heat loss
• DOI: 10.15231/jksc.2016.21.1.038
• ISSN: 1226-0959

Flame characteristics and NO emission behavior in $CH_4$/air-air premixed counterflow flames with applying FIR and FGR with $CO_2$ and $H_2O$ were investigated numerically by varying the ratios of FIR and FGR as well as global strain rate. Chemical effects of added $CO_2$ and $H_2O$ via FIR and FGR were analyzed through comparing flame characteristics and NO behaviors from real species($CO_2$ and $H_2O$) with those from their artificial species($XCO_2$ and $XH_2O$) which have the same thermochemical, radiative, and transport properties to those for the real species. The results showed that flame temperature and NO emission with FIR varied much more sensitively than that with FGR. Those varied little irrespective of adding $CO_2$, $H_2O$, and their artificial species to the fuel stream via FIR. However, Those were varied complicatedly by chemical effects of added $CO_2$ and $H_2O$ via FGR. Detailed analyses for them were made and discussed.