Analysis of the Effects of Fuel-side Nitrogen Dilution and Pressure on NOx Formation of Turbulent Syngas Nonpremixed Jet Flame

질소희석과 압력이 석탄가스 난류 확산화염장의 NOx 생성특성에 미치는 영향 해석

The present study has numerically investigated the effects of the fuel-side nitrogen dilution on the precise structure and NOx formation characteristics of the turbulent syngas nonpremixed flames. Numerical results indicate that for highly diluted case, the flame structure is dominantly influenced by the turbulence-chemistry interaction and marginally modified by the radiation effect. On the other hand, no-dilution case with the longer flight time and the relatively intermediate scalar dissipation rate is influenced strongly by the radiative cooling as well as moderately by the turbulence-chemistry interaction.