含能材料2018，Vol.26Issue(1)：94-100,7.DOI:10.11943/j.issn.1006-9941.2018.01.012
凝聚相炸药拐角爆轰的数值模拟
Numerical Simulations of the Corner Detonation of Condensed Phase Explosives
摘要
Abstract
The hybrid detonation formulation of three-dimensional condensed phase explosives is presented based on the multiphase compressible fluid equation and the reaction rate equation.The iteration method of thermodynamic equilibrium for the multiphase detonation mixed reaction zone is built and an efficient detonation parallel software is developed.The feasibility of the physical model,the numerical method and the program module are verified by comparative experiments.We focus on the wave front structure,the coupling of flow fields and chemical reactions and the secondary initiation mechanism of condensed phase explosives by numerical simulations of the detonation process at various corners.The numerical results show that the diffraction area of a corner of 135°is larger than that of 90°of PBX9404 explosive,and the wave front structure is affected by the local flow field velocity.The temporary "death zone" is formed because the chemical reactions are decoupled from the leading shock wave when the detonation wave passes the corner.As the corner angle increases,the dead zone of the corner is expanded.The key of secondary initiation in the dead zone is that the acting time of back-detonation wave should be longer than the critical induction time of explosives in the corner zone.关键词
凝聚相炸药/拐角爆轰/数值模拟Key words
condensed phase explosives/corner detonation/numerical simulation分类
军事科技引用本文复制引用
王星,姜胜利,赵寒月,余一,张蕾,陈军..凝聚相炸药拐角爆轰的数值模拟[J].含能材料,2018,26(1):94-100,7.基金项目
国防基础科研科学挑战专题(TZ2017002),国家重点研发计划(2017YFB0202403) （TZ2017002）
