烟火药水下燃烧气泡动力学特性  

Study on the Bubble Dynamic Behavior for Pyrotechnic Composition Combustion Underwater

作　　者：欧阳的华[1] 

机构地区：[1]武警工程大学,陕西西安710086

出　　处：《实验室研究与探索》2013年第12期57-60,共4页Research and Exploration In Laboratory

摘　　要：为分析烟火药水下燃烧的现象及声辐射特性,采用高速摄影技术对烟火药水下燃烧喷口处的气泡进行了实验,提出了采用AutoCAD技术来求解气泡体积的方法。在此基础上,获得了气泡体积变化的速度和加速度动力学特性曲线。结果表明,0.05 s内,气泡体积变化的最大速度达到了1.62×10-4m3/s,加速度最大达到了1.93×10-2m3/s2。此求解方法和结果可为烟火药水下燃烧的药剂配方和声辐射机理模型的构建提供参考。The volume changing characteristics of the bubble produced by the pyrotechnic composition combustion underwater are the research foundation of the underwater combustive sound source. In order to analyze the eharacteristie of the acoustic radiation and phenomenon of the pyroteehnic composition combustion underwater, the high speed photography was used to study the behavior of the bubble at exit, whicil was generated by the pyrotechnic composition combustion underwater. A new calc, ulative method about volume of the bubble which was based on AutoCAD was put forward, then, their velocity and changing aeceleration were obtained. Results showed that the maximum changing speed and changing acceleration of the wdume for bubble is respectively 1. 62 × 10^-4 m^3/s and 1. 93 × 10 ^-2 m^3/s^2, respeclively. And these resulls could be considered as solid references for mathemalie model and composition design in near future.

关 键 词：高速摄影 烟火药 水下燃烧 气泡 

分 类 号：TD943[矿业工程—选矿] TJ530[兵器科学与技术—军事化学与烟火技术]