论文部分内容阅读
采用金属颗粒蒸汽相扩散燃烧模型和燃烧产物多相成核理论，对铝粉燃烧所形成的Ａｌ２Ｏ３平均粒径进行了计算研究。根据计算结果，就环境因素对铝粉燃烧区域中的温度、燃烧产物的过饱和度及其凝聚成核速率的影响规律进行了分析讨论。结果表明：环境压强增加，铝粉燃烧温度和液滴表面温度提高，铝粉燃烧产物平均粒径降低；环境压强对参数分布特性的影响比环境温度的影响更为显著。
The average particle size of Al 2 O 3 formed by the combustion of aluminum powder was calculated by the metal particle vapor phase diffusion combustion model and the multiphase nucleation theory of combustion products. According to the calculation results, the influence of environmental factors on the temperature in the combustion zone of aluminum powder, the supersaturation of the combustion products and the nucleation rate of the agglomeration were analyzed and discussed. The results show that the ambient pressure increases, the burning temperature of aluminum powder and the droplet surface temperature increase, and the average particle size of the products decreases. The effect of ambient pressure on the distribution of parameters is more significant than that of ambient temperature.