The effects of non-uniform droplets distribution on the characteristics of group combustion for liquid fuel droplets cloud

비균일 액적분포가 액적군의 집단연소 특성에 미치는 영향

In order to predict the effects of droplets distributions such as number density and droplets size on group combustion characteristics and flame structure for liquid fuel sprays, modifications of group combustions model were made by changing the droplets distributions from uniform to non-uniform. Various droplets distribution models were adopted in this analysis to examine the effect of number density distribution on combustion characteristics and the difference between uniform and non-uniform droplets size distributions for a spherical droplets cloud. As results of present study, hollow droplets could with outer concentrating distribution has shorter total combustion time compare with the case of solid droplets cloud with inner concentrating distribution. Uniform droplets size distribution model predicts the shorter total combustion time compare with non-uniform droplets size distribution model, and the uniform droplets size distribution model may be used to predict the total combustion time for the droplets cloud containing larger initial size of droplets.

본 연구에서는 액적들의 분포상태가 집단연소의 특성에 미치는 영향을 규명하 기 위하여 김의 비정상 집단연소모델에 비균일 액적크기분포와 수밀도분포를 고려한 비균일분포 집단연소모델을 구성하여 이론적으로 해석하였다.