摘要
讨论的抑爆装置是以爆炸抛撒为原理。在发生火灾或爆炸事故的场所,利用抑制装置内炸药的爆炸作用力,瞬时将抑爆剂抛撒出来,快速形成水雾来封闭整个火焰传播通道,达到衰减压力或抑制火焰传播的目的。该装置与传统的连续喷射水雾系统比较,具有水雾形成速度快,形成水雾体积大的特点。着重分析爆炸抛撒水雾的形成过程。为此,借助计算流体力学商业软件FLUENT,采取两相流理论中的Euler-Euler法(颗粒相拟流体模型)数值模拟了受限空间内,爆炸作用力下水被抛撒、水雾形成和扩散过程。讨论了两种布置方式下水雾的运动状态,给出水雾浓度随时间和空间的发展过程,为进一步提高该装置的抑爆效果提供理论指导。
The principle of a new antidetonation device is based on explosive dispersion. If fire and explosion happen, water can be dispersed explosively to form water cloud to cover the whole firing zone, which can prevent the flame and shock wave from propagating. By comparison with tranditional spraying system, it has many advantages, such as rapid water cloud formation and larger water cloud volume. The formed process of dispersed explosively water cloud was emphatically analyzed. Based on the computer fluid dynamics commercial software FLUENT, the processes of water cloud explosive dispersion and the formation of water cloud were simulated numerically using Euler/Euler mode （two phase fluid model） in two-phase fluid dynamic theory. The profile of liquid droplet vector and the developing process of water cloud concentration with time and space were given by using two antidetonation devices, which provide a theory guidance for improving the antidetonation effect of the system.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2007年第11期1335-1339,共5页
Acta Armamentarii
基金
上海市重点学科建设资助项目(Y0103)
关键词
爆炸力学
爆炸抛撒
水雾
抑制
explosion mechanics
explosive dispersal
water cloud
suppression
