碳氢燃料云雾直接起爆感度的实验研究  

Experimental Study on the Direction Initiation Sensitivity of Hydrocarbon-air Cloud

作　　者：姚干兵[1] 解立峰[1] 刘家骢[1] 

机构地区：[1]南京理工大学化工学院

出　　处：《弹道学报》2006年第3期9-13,共5页Journal of Ballistics

基　　金：爆炸科学与技术国家重点实验室基金项目(KFJJ04-4)

摘　　要：在立式激波管中采用升降法和烟迹技术实测了几种碳氢燃料空气混合物直接起爆的临界起爆能和云雾爆轰波胞格尺寸.分析了云雾爆轰作用机制数据,结果表明燃料气液两相云雾爆轰的临界起爆能与当量比呈一“U”形曲线关系,临界起爆能的最小值点所对应的当量比稍大于1,这与气相爆轰结论是一致的;用胞格尺寸来衡量这几种燃料云雾爆轰相对感度的结果与临界起爆能的结论是一致的.The critical initiation energy of hydrocarbon-air mixtures was measured by the up and down method, and cell size was studied by smoked metallic foil under the conditions of direct initiation in vertical shock wave tube. The functional principle of cloud detonation was analyzed. Results indicate that the relationship between critical initiation energy and equivalent ratio shows an“U”shape curve. Equivalent ratio corresponding with the minimal critical energy is slightly larger than 1. The conclusion is similar to the gaseous detonation. The comparison of detonation sensitivity among these fuels was studied with cell size. The result by cell size is similar to the conclusion of the critical initiation.

关 键 词：碳氢燃料 云雾 爆轰感度 临界起爆能 胞格尺寸 

分 类 号：O381[理学—流体力学]