在加速场下含铝复合推进剂燃烧中粒子动力学研究

STUDY OF PARTICLE DYNAMIC OF ALUMINIZED COMPOSITE PROPELLANT COMBUSTION UNDER ACCELERATION FIELD

关键词:  加速场  粒子理论  含铝推进剂  燃烧化学动力学  燃烧产物

Key words:  Accelerating field  Particle theory  Aluminized propellant  Combustion chemical kinetics  Combustion product

摘要:

从两个方面研究了在加速度场下含铝复合推进剂燃烧中粒子动力学：在理论分析中，以牛顿运动定律为基础，运用粘流Ｎ－Ｓ方程导出燃烧产物中凝聚铝粒子运动方程，计算出加速度与粒子临界尺寸的关系曲线；在试验研究中，用研制的燃烧实验装置和动态粒子采集器，在不同加速度条件下获取燃烧产物中的铝粒子。研究结果表明，理论分析计算和试验研究结果基本吻合，从而验证了加速度效应的基本原理。

Abstract:

The theoretical analysis of particle dynamic of aluminized composite propellant combustion under acceleration field include analysis of particle movement and force acting on agglomerated aluminum particle of combustion productBased on Newton’s laws,kinematic equation of a moving particle is presented by Navier Stokes equationThe critical diameter of aluminum particle is calculated at each accelerationOn the other hand,by use of the combustion test apparatus and particle collection unit the aluminum particle and agglomerate size distribution of combustion product are obtainedThe results show that the calculation data are in accordance with the experimental ones and the theory of acceleration effect is demonstrated