| 泄爆过程中外部爆炸现象的实验研究 |
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| 引用本文： | 崔东明,杜志敏.泄爆过程中外部爆炸现象的实验研究[J].力学学报,2006,38(3):371-380. |
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| 作者姓名： | 崔东明 杜志敏 |
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| 作者单位： | 南京理工大学动力工程学院，210094 |
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| 基金项目： | 国家自然科学基金重点资助项目（19832030） |
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| 摘 要： | 采用压力测量与YA-16
高速阴影系统同步测量方法，对柱型容器内甲烷-空气混合气体的燃烧及泄爆过程进行实验
研究. 获得正常泄爆和发生外部爆炸(也称二次爆炸)时泄爆外流场压力-时间曲线和流场
阴影照片. 结果表明：泄爆过程中发生外部爆炸的典型特征为, 在压力-时间曲线上,破膜激
波形成的第一个压力峰值后出现外部爆炸形成的第二个压力峰值，在流场阴影照片上,破膜
激波后有第二道爆炸波出现.
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| 关 键 词： | 爆炸 泄爆 流场显示 |
| 文章编号： | 0459-1879（2006）03-0371-10 |
| 收稿时间： | 2004-12-28 |
| 修稿时间： | 2006-03-30 |
Experimental studies on external explosions during venting explosions |
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| Cui Dongming,Du Zhimin.Experimental studies on external explosions during venting explosions[J].chinese journal of theoretical and applied mechanics,2006,38(3):371-380. |
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| Authors: | Cui Dongming Du Zhimin |
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| Institution: | 1School of Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;2 Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | Experimental studies were preformed to investigate the combustion and venting process of the methane/air mixture inside a cylinder by the pressure transducers and the YA-16 high-speed shadowgraph systems controlled by a synchronization unit. The pressure-time histories and the sequences of high-speed shadowgraphs were obtained for the external flow field, which can follow the development of the external explosions (the secondary explosions) in explosion venting. The experimental results show the typical characteristics of the external explosions.The second pressure peak followed the first pressure peak formed by the rupture shock wave. The shadowgraphs of the external flow field also show the secondary explosion. |
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| Keywords: | explosions venting explosions flow field visualization |
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