A Study on Measurement of NO Concentrations in Laminar Nonpremixed $H_2/N_2$ Flame by LIF

레이저 유도 형광법(LIF)을 이용한 층류 비예혼합 $H_2/N_2$화염에서의 NO 농도측정에 관한 연구

In this study, quantitative nitric oxide concentration distributions are investigated in the laminar nonpremixed $H_2/N_2$ flames by laser-induced fluorescence (LIF). The measurements are taken in flames for different $N_2$ dilution ratios varying from 20${\sim}$80%, and fuel now rate is fixed as lslpm. The NO A-X (0,0) vibrational band around 226 nm is excited using a XeCl excimer-pumped dye laser. We applied same excitation line used in $CH_4$ premixed flame. Overall, NO concentration was rapidly decreased with $N_2$ addition and we could not measure the concentration any longer for $N_2$ dilution above 80%.