유선형스텝에 의해 안정화된 예혼합 화염의 구조와 연소특성에 관한 연구(I)

A Study of Flams Structure and Combustion Characteristics in a Premixed Flame Stabilized by a Stramlined Step(I)

In a premixed flame stabilized by a streamlined step, the flame structure and combustion characteristics were investigated to identify the effect of the pressure pulsation in a combustion air. A flame stabilizing limits, visualization, mean temperature, ion current and gas concentration (O$_{2}$, CO$_{2}$, CO, UHC) were measured. With the combustion air of higher pressure pulsation, the development of the mixing layer was fast and wide, the temperature and combustion intensity were higher at arbitrary section. But, the effect was notably decreased with X=150 mm downstream. And a first eddy formation from step edge was earlier. Thus, with the combustion air of higher pressure pulsation, high rate of heat generation was expected.