RDX的一维快烤燃模型及计算  

One-Dimensional Model and Calculation for Fast Cook-off of RDX

作　　者：田占东[1] 张震宇[1] 卢芳云[1] 赵剑衡[2] 谭福利[2] 

机构地区：[1]国防科技大学理学院技术物理研究所,湖南长沙410073 [2]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《高压物理学报》2013年第3期367-371,共5页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金委-中国工程物理研究院联合基金(11076029)

摘　　要：以RDX(黑索金)为研究对象,基于气相点火机制,建立了强激光辐照金属密封炸药装置的快烤燃模型。模型包括金属壳体、气隙和炸药3部分,利用气隙的热传导描述金属和炸药之间的非理想热接触,考虑了炸药的分解、熔化和蒸发过程,采用多组分、多通道反应机制描述化学反应过程。编制了相应的计算程序,对RDX的激光快烤燃过程进行了数值计算,结果表明,RDX的快烤燃过程大致可以分为惰性热传导、温度和气相反应物的累积以及快速化学反应,直至点火几个阶段。Based on gas-phase reaction mechanism,a fast cook-off model was established to study the process of RDX in a confined vessel irradiated by laser. The model considers steel vessel,air gap and condensed explosives. The heat conduction in air gap was used to describe the nonideal thermal contact. The process of decomposition,melting and evaporation in condensed RDX,and the reaction of multi-species and multi-steps in air gap were considered in model calculation by use of finite difference. Results show that the fast cook-off process of RDX can be approximately divided into three stages： inert heating, accumulation of reactants and increase of temperature, and ignition caused by rapid chemical reaction.

关 键 词：快烤燃 黑索金（RDX） 点火时间 数值计算 

分 类 号：O359[理学—流体力学]