爆破器材2025，Vol.54Issue(2)：21-28,8.DOI:10.3969/j.issn.1001-8352.2025.02.003
Comp.B炸药孔洞塌缩及热点生成的数值模拟
Numerical Simulation of Pore Collapse and Hot Spot Generation in Comp.B Explosives
王茂杰 1白桥栋 1韩家祥 1王进平 1贺全彪1
作者信息
- 1. 南京理工大学瞬态物理全国重点实验室(江苏 南京,210094)
- 折叠
摘要
Abstract
The collapse mechanism of internal pores in explosives is the main mechanism for the generation of hotspots.The ignition and growth model was adopted,and the S-ALE algorithm was used.Micro-pore structures were added to Comp.B explosives to study the influence of the existence and size of pores on the initiation of explosives,and the processes of pore collapse and hot spot generation were analyzed.The results show that the existence of pores makes it easier to generate hot spots in explosives.During the pore collapse process,micro-jets are formed.The micro-jets impact the inner wall surface downstream of the pores,and the kinetic energy is converted into internal energy,resulting in energy localization and leading to the formation of hot spots.During the collapse process,the particle velocity reaches 7 936 m/s,and the maximum temperature is close to 6 000 K.The initial pore size determines the size of the hot spots.The larger the pores are,the larger the hot spots size will be.The pore size also affects the hot spot temperature.The temperature of small pores rises more rapidly,while the final hot spot temperature of large pores is higher.关键词
Comp.B炸药/孔洞/塌缩机制/热点Key words
Comp.B explosive/pore/collapse mechanism/hot spot分类
化学工程引用本文复制引用
王茂杰,白桥栋,韩家祥,王进平,贺全彪..Comp.B炸药孔洞塌缩及热点生成的数值模拟[J].爆破器材,2025,54(2):21-28,8.
