Numerical Simulation of Single Aluminum Particle Ignition

摘要：

A numerical model of quasi-steady aluminum particle ignition is presented, which shows the calefy-melt-calefy-ignite process in high-temperature oxidant (21%O2+79%Ar) induced by heat transfer and surface chemical reaction. Results of numerical simulation are also presented and can reflect the effects that heat of transfer by convection, heat of transfer by radiation, heat of melting and heat of heterogeneous surface reaction have on ignition. It was shown that in the process of ignition, only when surrounding temperature exceeds 1000 K oxidizing of aluminum becomes obvious; at the time of igniting, the content of aluminum increases a little with surrounding temperature rising, but is independent of particle size; ignition delay time shortens with surrounding temperature rising or with particle size decreasing.

关键词： aluminum particle ignition mechanism numerical simulation ignition delay time

作者: WU Wane ZHU Zuoming HU Jian GUO Erling

作者单位: The Second Artillery Engineering College, Section 503, Xian 710025, Shaanxi, China

会议类型: 国际会议

会议名称: 2009 International Autumn Seminar on Propellants,Ezplosives and Pyrotechnics(2009国际推进剂、炸药、烟火技术秋季研讨会)

会议地点: 昆明

会议语种:英文

页码: 1-4

在线出版日期: 2009-09-22（万方平台首次上网日期，不代表论文的发表时间）