摘要
给出了二维弯曲爆轰波后产物流场计算方法。爆轰波阵面传播规律满足Detonation Shock Dy-namics(DSD)理论并用level set(LS)方法计算,波阵面传播规律与波后流场的耦合通过程序燃烧法实现,反应进程变量可作为LS函数的函数给出。爆轰波从刚性细管道向粗管道传播产生绕射的二维计算结果表明,化学反应速率不影响波后流场分布,只影响反应区结构。此方法可用于钝感炸药的驱动计算问题。
Algorithms for the flow field of detonation products behind 2D curved detonation waves are given. Detonation propagation is described by detonation shock dynamics, and detonation front positions are computed by the LS methods. Detonation propagation and coupling between the detonation front and the flow field of detonation products behind the detonation front are calculated by a program burn method, in which the reaction process variable is defined by the LS functions. Calculated results for 2D detonation wave diffraction from a rigid finer tube to a coarser tube show that chemical reaction rates do not influence the flow field distribution behind the detonation front, only affects the reaction zone structure. The proposed method can deal with the driven problems of insensitive explosives.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2008年第5期401-406,共6页
Explosion and Shock Waves
基金
国家自然科学基金项目(10672151)
中国工程物理研究院科学技术发展基金项目(2008B0202011)
关键词
爆炸力学
程序燃烧法
LS方法
非理想爆轰
mechanics of explosion
program burn method
LS method
non-ideal detonation
