| C2H2-2.5O2-Ar混合气体临界管径和爆轰胞格及临界能量的实验研究 |
| |
| 引用本文： | 张博,白春华,John H.S. LEE.C2H2-2.5O2-Ar混合气体临界管径和爆轰胞格及临界能量的实验研究[J].北京理工大学学报,2012,32(3):226-230. |
| |
| 作者姓名： | 张博 白春华 John H.S. LEE |
| |
| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京 100081;Department of Mechanical Engineering, McGill University, Montreal H3A 2K6, Canada;北京理工大学爆炸科学与技术国家重点实验室,北京,100081;Department of Mechanical Engineering, McGill University, Montreal H3A 2K6, Canada |
| |
| 基金项目： | 爆炸科学与技术国家重点实验室(北京理工大学)重点课题(ZDKT08-2) |
| |
| 摘 要： | 建立了C2H2-2.5O2-Ar混合气体爆轰临界管径的测试系统,其中高压电火花作为起爆源.首先分别测定了C2H2-2.5O2,C2H2-2.5O2-50%Ar,C2H2-2.5O2-70%Ar三种混合气体在不同初始压力下的爆轰临界管径.结果表明:随着氩气稀释浓度的提高,在管道直径相同的条件下,可形成球形爆轰的临界压力增加,表明物质的爆轰敏感性降低.进一步探究各种物质临界管径与爆轰胞格的关系,得到了三种物质临界管径与胞格宽度的比例系数.最后分析了三种物质的临界管径和直接起爆的临界能量的关联性,并与Lee表面积能量模型对比,实验结果与理论模型基本吻合,得出C2H2-2.5O2-Ar混合气体爆轰临界管径与临界起爆能量之间的关系为Ec=16-1πρ0v2CJIdc3.
|
| 关 键 词： | 爆轰 临界管径 胞格宽度 临界能量 电火花点火 |
| 收稿时间： | 2011/8/15 0:00:00 |
Experimental Research on the Relation of Parameters of C2H2-2.5O2-Ar Mixtures Detonation: Critical Tube Diameter, Cell Size and Critical Energy of Direct Initiation |
| |
| ZHANG Bo,BAI Chun-hua and John H.S. LEE.Experimental Research on the Relation of Parameters of C2H2-2.5O2-Ar Mixtures Detonation: Critical Tube Diameter, Cell Size and Critical Energy of Direct Initiation[J].Journal of Beijing Institute of Technology(Natural Science Edition),2012,32(3):226-230. |
| |
| Authors: | ZHANG Bo BAI Chun-hua and John HS LEE |
| |
| Institution: | State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China; Department of Mechanical Engineering, McGill University, Montreal H3A 2K6, Canada;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;Department of Mechanical Engineering, McGill University, Montreal H3A 2K6, Canada |
| |
| Abstract: | A critical tube diameter measurement system was established for C2H2-2.5O2-Ar mixtures detonation.Initiation of detonation was accomplished via a high voltage spark energy source.The critical tube diameters under different initial pressures of C2H2-2.5O2,C2H2-2.5O2-50%Ar,C2H2-2.5O2-70%Ar mixtures were measured in experiments.The results show that,with the increasing of argon dilution for the same tube diameter,the critical pressure,at which the planar detonation can emerge from a tube into unconfined space to form a spherical detonation,increases as well,that indicates the sensitivity of the mixtures detonation decreases.In addition,the relationship between critical tube diameter and cell size for those mixtures were investigated.Finally,the correlation between critical tube diameter and critical energy of direct initiation was analyzed.Good agreement was found by comparing the experiment data with Lee’s surface energy model.Therefore,the parametric function between critical tube diameter and the critical energy would be Ec=16-1πρ0v2CJId3c. |
| |
| Keywords: | detonation critical tube diameter cell size critical energy spark ignition |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
| 点击此处可从《北京理工大学学报》下载免费的PDF全文 |
|
