铝颗粒在多相流中燃烧的数值模拟  

The Numerical Simulation of Aluminum Droplet Combustion in Multi-phase Fluid

作　　者：刘丛林[1] 郜冶[1] 贺征[1] 

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001

出　　处：《弹箭与制导学报》2012年第3期118-120,124,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：中央高校基本科研业务费专项资金(HEUCF100201)资助

摘　　要：铝颗粒的燃烧细节决定着推进剂的性能。应用Fick第一定律及Fourier定律,对燃烧颗粒中各组分气体的质量与能量扩散过程进行计算,跟踪氧化反应中生成的中间态产物,总结了颗粒尺寸及组分随燃烧时间的变化规律,以及颗粒的燃烧效率等。结果表明,颗粒燃烧初期,反应进行的较为强烈,约60ms后,燃烧趋于平稳,最终,颗粒20%以上的外表面被氧化物所覆盖。The aluminum droplet＇s burning detail is important for propellant capability. Based on Fick＇s first law and Fourier law, the mass and energy diffusion process between gases produced by burning aluminum droplet was computed. Following the track of the intermediate product, the development of droplet＇s size, component, and combustion efficiency were studied. Results show that in early process, the reaction is more intense. After 60 ms, the burning becomes placid. Finally, about 20% of the droplet surface is covered by the oxide cap.

关 键 词：固体火箭推进剂 铝颗粒 非稳态燃烧 氧化帽 

分 类 号：V435.12[航空宇航科学与技术—航空宇航推进理论与工程]