Abstract
This paper deals with the effect of secondary air injection on oscillatory combustion of a turbulent premixed flame. Characteristics of pressure fluctuation, OH^* fluctuation and NO_x emissions have been also discussed. The result indicates that 45deg. injection is effective to stabilize the oscillatary flame, however NO_x emission is slightly increased. And furthermore, it is found that 90deg. injection shows performance to reduce NO_x emission successfully.
