立式激波管内云雾爆轰胞格尺寸的测定与分析

姚干兵; 解立峰; 刘家骢

doi:10.11883/1001-1455(2007)04-0312-07

立式激波管内云雾爆轰胞格尺寸的测定与分析

doi: 10.11883/1001-1455(2007)04-0312-07

1.
南京理工大学化工学院，江苏南京 210094；
2.
扬州大学化学化工学院，江苏扬州 225002；
3.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081

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出版历程
- 刊出日期: 2007-07-25

Measurement and analysis of the cell size caused by fuel-air detonation in a vertical shock tube

1.
Chemical School, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;
2.
College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, China;
3.
State Key Lab of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 采用烟迹技术在立式激波管中测定了环氧丙烷、90#汽油、硝酸异丙酯、庚烷、癸烷、戊二烯等几种燃料气液两相云雾爆轰的胞格尺寸。结果表明，云雾爆轰的胞格尺寸随当量比的变化呈U形曲线关系，且最小胞格尺寸并不是对应于等化学当量比而是偏向于富燃料一侧，这与气相爆轰的结论是一致的。胞格尺寸随起爆能的增加而减小。当起爆能达到一定值后，胞格尺寸变化不明显，若起爆能继续增加，在通常的胞格内出现精细结构。云雾爆轰波胞格长度与宽度的比值比气相爆轰小。另外，根据烟迹记录分析了云雾爆轰作用机制，认为液滴的碎解、汽化过程以及燃烧区前导是控制气液两相云雾爆轰的主要因素。
- 爆炸力学 /
- 爆格结构 /
- 爆轰 /
- 燃料 /
- 云雾
Abstract: The cell sizes caused by fuel-air cloud detonation were investigated by smoked foil in a vertical shock tube. It indicates that the relationship of the cell sizes and equivalence ratios shows a U-curve, The minimal cell size is obtained when equivalence ratio is slightly larger than 1. This result is similar to that in gaseous detonation. A more complex celluar structure takes place with the enhancement of ignition energy. The cell size of hydrocarbon-air cloud increases with the number of carbon atoms, and the ratio of its length to width is less than that of the gaseous fuel. Experimental results are helpful to understand the detonation nature of hydrocarbon fuel-air mixtures.
- mechanics of explosion /
- cellular structure /
- detonation /
- fuel /
- spray

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文章访问数: 2492
HTML全文浏览量: 164
PDF下载量: 277
被引次数: 0

立式激波管内云雾爆轰胞格尺寸的测定与分析

doi: 10.11883/1001-1455(2007)04-0312-07

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出版历程

Measurement and analysis of the cell size caused by fuel-air detonation in a vertical shock tube

计量

出版历程

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