基于CE/SE方法对模块装药点传火过程的数值模拟及特性研究  

Numerical Simulation and Characteristics Analysis on Ignition and Flame-propagation Process of Modular Charge Based on CE/SE Method

作　　者：森思义 王浩[1] 陶如意[1] SEN Si-yi;WANG Hao;TAO Ru-yi(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210094

出　　处：《含能材料》2022年第7期744-751,共8页Chinese Journal of Energetic Materials

摘　　要：为了深入探究模块装药的点传火特性,设计了一种金属模块药筒进行了点传火试验并对试验过程进行了仿真分析,建立了试验条件下的内弹道气固二维两相流模型,采用CE/SE方法对其进行了编程求解,获得了膛内流场参数的变化特性,数值结果与实验结果吻合较好。数值结果揭示了点传火过程中传火管及主装药区压力分布的变化过程、气相的流动规律及其径向传播效应对模块主装药区发射药燃烧的影响;药筒尾部膜片的破裂会导致燃烧室内自由空间区域形成激波现象,对这一激波形成的原因进行了探讨,并对假设工况下的传火孔破孔的燃气射流过程进行了仿真,研究了破孔条件下主装药区的气相流动及升压规律。综合结果表明模块装药条件下传火管燃气的径向效应在整个点传火过程中较为明显,并且装药结构的特殊性易引发激波现象的产生。In order to explore the characteristics of ignition and flame-propagation process of the modular charge,a small metal modular cartridge was designed and the ignition test was carried out. On this basis,the internal ballistic two-dimensional gas-solid two-phase flow model of the test was established,the model was solved by using CE/SE method. The variation characteristics of flow field parameters in the chamber are obtained,and the numerical results are in good agreement with the experimental results. The numerical results reveal the changing process of the pressure distribution of the ignition tube and main charge area during the flame-propagation process,the flow law of the gas phase and the influence of its radial propagation effect on the combustion of the propellant in main charge area;The rupture of the cartridge’s end cap will lead to the formation of a shock wave in free space of the chamber,the reason for the formation of the shock wave are discussed. In addition,the numerical simulation of the gas jet of the vent hole breaking-progress under the hypothetical working condition is carried out,the gas phase flow law and the pressure-boosting law of the main charge area are studied. The comprehensive results show that under the condition of modular charge,the radial effect of the gas phase in the ignition tube is obvious during the entire ignition and flame-propagation process,and the particularity of the charge structure can easily lead to the formation of shock waves.

关 键 词：内弹道两相流 模块装药 CE/SE方法 

分 类 号：TJ012.1[兵器科学与技术—兵器发射理论与技术]