摘要
为了探明分装结构爆炸分散刺激剂形成气溶胶云团的过程,设计了具有分装装药结构的原理样弹,采用原理样弹分静态条件下地面爆炸和空中爆炸两种方式,应用高速摄影技术研究了爆炸分散邻氯代苯亚甲基丙二腈(CS)刺激剂过程中气溶胶云团的形成、运动规律,得到刺激剂气溶胶云团直径、径向速度和扩散高度随时间的变化规律,呈现出地爆与空爆分散试验结果的差异。通过对爆炸驱动刺激剂气溶胶云团运动过程的理论分析,建立了与试验结果相吻合的速度数学模型。试验结果表明,在地爆和空爆两种方式下,分装结构爆炸分散CS刺激剂过程总体规律基本一致,均可分为径向加速阶段、减速阶段、湍流阶段和扩散阶段,前两个阶段末期的云团参数可为预测爆炸型催泪弹有效作用面积及评估威力幅员提供初始条件;地爆在0.7 ms左右速度达到最大值1495 m·s^-1,空爆在0.3 ms左右达到最大值1697 m·s^-1,相比空中爆炸,地面爆炸时冲击波对水泥地面发生反射叠加,有利于流场和颗粒本身径向运动的扩散,地面爆炸分散云团直径较大,轴向扩散高度较小。
In order to explore the process of aerosol cloud formation caused by explosive dispersive stimulant in divided structure,firstly,a test sample grenade with divided charge structure was designed.Secondly,the principle sample bomb was divided into two types:ground explosion and air explosion under static conditions.The formation and movement of aerosol cloud during the process of explosive dispersive o-chlorobenzylidene malononitrile(CS)irritant agent were studied by using high-speed photography technology,and the variation rules of diameter,,radial velocity and diffusion height of aerosol cloud group with time were obtained,the results of ground explosion and air explosion dispersion tests being different.Finally,through the theoretical analysis of irritant aerosol cloud movement process driven by explosion,the mathematical model of velocity is established which agrees with the experimental results.Results showed that in both ground and air explosions,the general rules of the explosive dispersive CS irritant agent process of the divided structure are basically consistent,which can be divided into radial acceleration stage,deceleration stage,turbulence stage and diffusion stage.The cloud parameters at the end of the first two stages can provide the initial conditions for predicting the effective area of explosive tear gas and estimating the power range.The maximum velocity of ground explosion is 1495 m·s^-1 at 0.7 ms,and that of air explosion is 1697 m·s^-1 at 0.3 ms.Compared to an air explosion,for an ground explosion,the shockwave produces reflection superposition on the cement ground,which is conductive to the diffusion of the radial movement of the flow field and particles,and the ground explosive dispersive cloud group has a larger diameter,while the axial diffusion height is small.
作者
李廷
梁婷
李江存
孙航
蒋志刚
LI Ting;LIANG Ting;LI Jiang-cun;SUN Hang;JIANG Zhi-gang(Institute of Chemical Defense,Beijing 102205,China;Research Institute of Chemical Defense,Beijing102205,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2020年第3期255-260,共6页
Chinese Journal of Energetic Materials
关键词
分装结构
刺激剂
爆炸分散
气溶胶云团
irritant agent
divided structure
explosive dispersion
aerosol clouds
