粉粒径对含铝煤油凝胶燃料燃烧特性的影响  

Effect of Aluminum Particle Size Combustion Characteristics of Aluminum-Kerosene Gel Fuel

作　　者：薛明帅 李建[2] 何桂标 范源麟 马善学 包鹏 王伯良[2] XUE Mingshuai;LI Jian;HE Guibiao;FAN Yuanlin;MA Shanxue;BAO Peng;WANG Boliang(School of Safety Science and Engineering,Nanjing University of Science and Technology,Jiangsu Nanjing,210094;School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Jiangsu Nanjing,210094)

机构地区：[1]南京理工大学安全科学与工程学院,江苏南京210094 [2]南京理工大学化学与化工学院,江苏南京210094

出　　处：《爆破器材》2025年第2期36-43,共8页Explosive Materials

摘　　要：为探究铝粉粒径对含铝煤油凝胶燃料激波诱导点火的影响规律,利用纹影法与阴影法对铝粉粒径为1.20、7.05μm及23.63μm的含铝煤油凝胶燃料在激波管内的点火过程进行了观察。通过分析测得的压力信号和铝粉燃烧产物光信号,对比了含不同粒径铝粉的凝胶燃料在激波诱导作用下的点火和燃烧特性。结果表明:随着铝粉粒径的增大,凝胶燃料雾化后云团的均匀性变差,点火延迟时间也随之增加,火球的持续时间以及火球表面的最高温度均有一定程度的减小。In order to investigate the influence of particle size of aluminum powder on shock wave induced ignition of aluminum-kerosene gel fuel,schlieren method and hadowgraph method were used to observe the ignition process of aluminum-kerosene gel fuel with particle sizes of aluminum powder of 1.20,7.05μm and 23.63μm in shock tube.The ignition and combustion characteristics of gel fuels under shock wave induction were compared by the measured pressure signal and the optical signal of aluminum powder combustion products.The results show that the uniformity of the atomization cloud of the gel fuel deteriorates with the increase of the particle size of the aluminum powder,the ignition delay also increases.The duration of the fireball and the maximum temperature of the fireball surface decrease to a certain extent.

关 键 词：铝粉粒径 含铝煤油凝胶燃料 激波诱导点火 燃烧特性 

分 类 号：TQ560.7[化学工程—炸药化工] O373[理学—流体力学]