Soot Formation and Oxidation of an Ethylene Laminar Diffusion Flame with Different Radiation Boundary Conditions

에틸렌 층류 확산화염의 복사경계조건에 따른 매연생성 및 산화특성

The soot formation and oxidation characteristics with different radiation boundary conditions have been studied experimentally in a co-flow ethylene/air laminar diffusion flame. The boundary conditions are two cases, one is a fully refractive radiation boundary condition by a polished aluminum cylinder(AL) and the other is a fully absorbing radiation boundary condition by a black body cylinder(BB). The AL case compared with BB condition show the lower inception point, denser soot volume fraction, wider and longer annular soot area owing to the reabsorption of radiating energy.