微气体延期药柱球面燃烧模型

Spherical Combustion Model of Gasless Delay Column

根据微气体延期药柱的特性，提出热点球面燃烧物理模型。基于该模型，根据热传导理论和阿累尼乌斯定律推导并归纳出反应速度、反应半径与反应时间的关系式ｒ＝Ｂｔｎ和ｖ＝ｎＢｔｎ－１，并将该式推广至线点火与面点火的情况。在实际设计工作中采用该模型，可以获得较为准确的延期药量与延期时间的设计参数。

According to the property of gasless delay column, spherical combustion model(SCM) starting from a hot spot is proposed in this paper.On the basis of the model ,the reaction relationship between rate, radius and time, r =B t n and v =nB t n-1 ,is obtained by utilizing heat conduction theory and Arrhenius Law.Application of the relationship is extended to linear and surface ignition .In the actual design process ,accurate design parameters of delay composition content and delay time are obtained.