메탄/공기 확산화염에 이산화탄소 첨가에 따른 단일 와동의 동적 거동에 관한 수치해석

초록

The dynamic behaviors of the single vortex and flame-vortex interaction in a CH4/Air diffusion flame with addition of CO2 were investigated numerically. The numerical method was based on a predictor-corrector for low Mach number flow. A two-step global reaction mechanism was adopted as a combustion model. Through comparison of results by effect of CO2 added either on the fuel or oxidizer side, it was found that the growth of single vortex and entrainment of surrounding fluid by CO2 addition on the fuel side are larger than those by CO2 addition on oxidizer side. Also, when CO2 is added on fuel side, flame-vortex interaction becomes more significant than on air side.