INFLUENCE FACTORS OF METHANE-AIR COUNTERFLOW DIFFUSION FLAME

This paper investigates the influences of pressures, velocities, and temperatures of gases at nozzles on the temperature of flame. Considering that temperature and species mass fractions are functions of axial co-ordinates, a quasi-1-D mathematic model in cylindrical co-ordinates for counterflow diffusion flame is built. The results show that the pressure, velocities, and temperatures of gases can affect the temperature distributions of methane-air counterflow diffusion flame, and that the influence of the variations of velocities at two nozzles on the movement of the starting reaction interface is most significant in these factors.