| 泄爆诱导二次爆炸的实验研究 |
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| 引用本文： | 叶经方,姜孝海,贾正望,董刚,范宝春.泄爆诱导二次爆炸的实验研究[J].爆炸与冲击,2004,24(4):356-362. |
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| 作者姓名： | 叶经方 姜孝海 贾正望 董刚 范宝春 |
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| 作者单位： | 南京理工大学动力工程学院,江苏,南京,210094 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 在不同泄爆压力、不同泄爆面积和不同当量比的甲烷/空气预混气的实验条件下,采用容积为0.00814m3带导管的柱形泄爆容器和底端中心点火方式,进行了一系列泄爆实验。实验获得了内外流场测点的压力历史曲线。结果表明泄爆后外流场出现典型的破膜激波和二次爆炸波的双峰变化特征,前者不断下降,其强度随泄爆压力的增大而增大,而后者经历了上升和下降过程,强度随泄爆压力、泄爆面积和甲烷/空气当量比的增大而增大。
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| 关 键 词： | 爆炸力学 二次爆炸 实验研究 甲烷/空气预混气 泄爆 泄爆 二次爆炸 实验条件 研究 vented explosion induced external 空气当量比 过程 强度 变化特征 双峰 爆炸波 激波 破膜 内外流场 结果 历史曲线 压力 测点 |
| 文章编号： | 1001-1455(2004)04-0356-07 |
| 修稿时间： | 2003年8月26日 |
Experimental investigations of external second-explosion induced by vented explosion |
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| YE Jing-fang,JIANG Xiao-hai,JIA Zheng-wang,DONG Gang,FAN Bao-chun.Experimental investigations of external second-explosion induced by vented explosion[J].Explosion and Shock Waves,2004,24(4):356-362. |
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| Authors: | YE Jing-fang JIANG Xiao-hai JIA Zheng-wang DONG Gang FAN Bao-chun |
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| Abstract: | A series vented explosion experiments in a 0.00814m~3 cylindrical vented vessel with central bottom ignition, were performed. The effects of different failure pressure, different vent area and different stoichiometric ratio of methane/air mixture on venting were investigated. The results show that there exists the typical rupture shock wave and the second explosion wave in the external flow field during venting. The value of the rupture shock wave declined all the time, and the value of second explosion wave rose to the maximum and then declined. The peak value of the second explosion rose with the increase of failure pressure, vent area and stoichiometric ratio of methane/air mixture respectively. |
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| Keywords: | mechanics of explosion second explosion experimental investigation methane/air mixture vented explosion |
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