Relation between artificial viscosity and chemical reaction rate law in numerical simulation of steady detonation 定常爆轰数值模拟中化学反应率与人为粘性的相关性
According to stress histories recorded from Lagrangian gauges in a plane shock initiation experiment and calculation result with other reaction rate models, the TANG model can't model process of shock to detonation of PBX-9404 at low pressure. 根据实测压力历史曲线以及用其它反应速率计算得到的压力历史曲线,发现TANG模型在低冲击起爆压力下不能模拟PBX-9404炸药的冲击起爆过程。
It was indicated that parameter of chemical reaction rate had little influence on the parameters of detonation in gas-fuel droplet systems whereas the detonation limit was obviously influenced from the results of calculation. 数值模拟结果表明化学反应率对爆轰CJ参数的影响并不明显,但对气体&燃料液滴两相系统的爆轰极限有明显的影响。
In the same condition of ignition energy, the greater of chemical reaction rate, the lower of lower detonation limit and higher of upper detonation limit. 在相同的起爆能量的条件下,化学反应率越大,两相系统的爆轰极限的下限越小,上限越大。
The shocking-to-detonation transition ( SDT) of insensitive high explosives ( IHE) including LX-17 and ultrafine TATB was studied by using Hybrid reaction rate model and modified JWL equation of state ( EOS), and phenomena of colliding diverging detonation was numerically simulated. 采用Hybrid反应率结合修正的JWL方程,研究了LX-17、超细TATB等钝感炸药的冲击起爆(SDT)过程,并计算了爆轰波的对碰现象。
Moreover, we prove that the limits of the global solutions as reactive rate k tends to infinity are just the solutions of interactions of shock and detonation for the simplest Chapman-Jouguet combustion model. 同时,当反应速率趋于无穷大时,本文证明了该全局解的极限恰好是相应CJ燃烧模型激波和爆轰波相互作用的解。
In this dissertation, the reaction rate of Insensitive High Explosives ( IHE) in the process of shock initiation and the constitutive relationships of overdriven detonation products are mainly introduced. 本文主要介绍了钝感炸药的冲击起爆过程化学反应速率以及超压爆轰产物状态本构关系。