钝感炸药点火增长模型的欧拉数值模拟

摘要

The ignition-growth reactive model and a desensitizing model were introduced into the self-developed two-dimensional multicomponent Eulerian elastic-plastic hydrodynamics code (MEPH2Y), respectively.Numerical studies were carried out on some detonative phenomena including the shock ignition, the diameter effect and the formation of the dead zone, with the aid of the adaptive mesh refinement technique.The numerical results show that the computation can simulate the major characteristics of the planar detonation waves, such as the detonation wave speed, CJ state, von Neumann spike state and so on.And the diameter effects of the explosives can be simulated correctly.Under the consideration of the desensitizing reactive model, the dead zone formation of the insensitive high explosives can also be reproduced.%在自主研发的二维多介质欧拉弹塑性流体力学程序中,通过引入点火增长的反应率模型以及炸药减敏模型,借助网格自适应技术,研究钝感炸药的冲击点火、直径效应以及死区形成等爆轰现象.数值模拟结果表明,该程序能够正确模拟平面爆轰波的爆速、CJ状态、von Neumann尖点等爆轰参数；并能够较好模拟炸药的直径效应.另外,通过引入考虑减敏效应的反应率模型,能较好地模拟钝感炸药的死区形成过程.