| 大型水平管道中环氧丙烷-铝粉-空气混和物爆燃转爆轰的实验研究 |
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| 引用本文： | 陈默,白春华,刘庆明.大型水平管道中环氧丙烷-铝粉-空气混和物爆燃转爆轰的实验研究[J].高压物理学报,2011,25(4). |
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| 作者姓名： | 陈默 白春华 刘庆明 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室; |
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| 基金项目： | 国家自然科学基金(10772032); 爆炸科学与技术国家重点实验室基金(ZDKT08-2-6,YBKT09-1) |
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| 摘 要： | 在长为32.4 m、内径为0.199 m的大型长直水平管道中，对环氧丙烷-空气两相流云雾及环氧丙烷-铝粉-空气三相流云雾的爆燃转爆轰（DDT）过程进行了实验研究。对弱点火条件下多相混和物DDT过程的不同阶段特征进行了分析，对比研究了不同浓度时混和物的燃爆情况。结果表明：浓度为513 g/m3的环氧丙烷-空气混和物及浓度为237和643 g/m3的环氧丙烷-铝粉-空气混和物均能在管道中完成爆燃向爆轰的转变，进入自持爆轰阶段，其胞格尺寸分别为0.28和0.50 m。
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| 关 键 词： | 爆燃转爆轰 弱点火 环氧丙烷 铝 自持 |
| 收稿时间： | 2010-03-22; |
Experimental Research of Deflagration to Detonation Transition of Epoxypropane-Aluminum-Air Mixtures in Large-Scale Tube |
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| CHEN Mo,BAI Chun-Hua,LIU Qing-Ming.Experimental Research of Deflagration to Detonation Transition of Epoxypropane-Aluminum-Air Mixtures in Large-Scale Tube[J].Chinese Journal of High Pressure Physics,2011,25(4). |
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| Authors: | CHEN Mo BAI Chun-Hua LIU Qing-Ming |
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| Institution: | CHEN Mo,BAI Chun-Hua,LIU Qing-Ming(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | Motivated by the current interest in the mechanism of the deflagration to detonation transition(DDT),the DDT experiments of epoxypropane-air mixture and epoxypropane-aluminum-air mixture are carried out by a large-scale tube(32.4m long and 0.199 inner diameter).The processes of DDT in multi-phase clouds are analyzed,and the mixtures with different concentrations are compared.The self-sustained detonation waves are formed in the epoxypropane-air mixture with epoxypropane concentration of 513g/m3 and epoxypro... |
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| Keywords: | deflagration to detonation transition weak ignition epoxypropane aluminum self-sustained |
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