Effect of filling ratio on premixed methane/air explosion in an open-end pipe
Effect of filling ratio on premixed methane/air explosion in an open-end pipe
复制标题
填充率对开口管道中预混合甲烷/空气爆炸的影响
DOI：
10.1177/1756827716651397
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发表时间：
2016-05
影响因子：
1.6
通讯作者：
Yao Hao
中科院分区：
文献类型：
--
作者：
Guo Chang;Lin Bai-quan;Zhu Chuan-jie;Jiang Bing-you;Sun Yu-min;Yao Hao
利用实验系统研究了不同填充率(20%、30%、40%、50%、60%和100%)下甲烷/空气预混爆炸的传播特性。结果表明，在不同充填比下，峰值超压在初始阶段呈下降趋势，随后又呈上升趋势，直至达到最大值。随着爆炸向开口端扩散，超压呈下降趋势。在这一点上，火焰速度最初沿管道增加，但后来急剧下降。此外，随着充填率的增加，爆炸超压和火焰速度也随之增大。但当填充率达到50%时，爆炸超压和火焰速度趋于稳定，增加不明显。这些结果将对评估爆炸对煤矿或其他化学工业中的设备和人员造成的损害具有重要意义。
The propagation characteristics of premixed methane/air explosion under different filling ratios (20%, 30%, 40%, 50%, 60%, and 100%) were studied using an experimental system. The results indicate that the peak overpressure showed a decreasing trend at the initial stage but then showed an increasing trend until reaching its maximum value under different filling ratios. As the explosion propagated to the open end, the overpressure showed a downtrend. At this point, the flame speed initially increased along the pipe but then dropped dramatically. In addition, the explosion overpressure and flame speed increased with the increase of filling ratio. However, when the filling ratio reached 50%, the explosion overpressure and flame speed tended to be stable and the increase was not obvious. These results will be of great importance in evaluating the explosive damage to equipment and human personnel working in coal mines or other chemical industries.
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DOI：
10.1016/j.proeng.2011.11.2307
发表时间：
2011
期刊：
Procedia Engineering
影响因子：
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作者：
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影响因子：
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