爆炸与冲击2012，Vol.32Issue(6)：592-598,7.
C2H2-O2-Ar和C2H2-N2O-Ar直接起爆形成爆轰的临界能量
Critical energy for direct initiation of spherical detonations in C2H2-O2-Ar and C2H2-N2O-Ar mixtures
摘要
Abstract
Direct initiation was achieved via a high-voltage capacitor spark discharge and the critical energy was accurately estimated from the analysis of the current output. Experiments were carried out to measure the critical energies of C2H2-O2-Ar and C2H2-N2OAr mixtures under different initial conditions. The critical energies for C2H2-N2O-Ar mixtures are significantly higher than those for C2H2-O2-Ar mixtures under the same initial conditions. The relation between explosion length and critical tube diameter was analyzed to explore the large discrepancy of the critical energy between those mixtures. The critical tube diameter measurement in C2H2-N2O-Ar mixtures was further investigated, and based on the critical tube diameter correlation, the relationship between explosion length and critical tube diameter for C2H2-O2-Ar mixtures was found to be ro=2. 5dc. And the corresponding relationship is ro=2dc for CZH2-O2-Ar mixtures. It displays that the proportional factor between explosion length and critical tube diameter will increase if N2O is used as an oxidizer, which results in more initiation energy per unit required for initiating the mixture to achieve a direct detonation. Thus the critical energy of direct initiation tends to be higher.关键词
爆炸力学/临界起爆能量/直接起爆/C2H2-O2-Ar/爆轰/爆炸特征长度/爆轰临界管径Key words
mechanics of explosion/ critical initiation energy/ direct initiation/ C2H2-O2-Ar/ detonation/ explosion length/ critical tube diameter分类
数理科学引用本文复制引用
张博,白春华..C2H2-O2-Ar和C2H2-N2O-Ar直接起爆形成爆轰的临界能量[J].爆炸与冲击,2012,32(6):592-598,7.基金项目
中国博士后科学基金项目(2012M520852) （2012M520852）
