화염 불안정성이 난류 예혼합 화염의 전파 특성에 미치는 영향에 관한 연구

Influence of Flame Instabilities on Propagation Characteristics of Stagnating Turbulent Premixed Flames

DNS is performed to examine the propagation characteristics of stagnating turbulent premixed flames. Results show good agreement with the recently proposed relationship for turbulent burning velocity, $S_T$. It is shown that $S_T$ increases through a thinner flamelet, turbulence production and correlation between fluctuating velocity and buoyancy force respectively for diffusive-thermal, hydrodynamic and Rayleigh-Taylor instability. The mean curvature doesn't have significant effect on $S_T$ at the leading edge.