The rate of pressure rise of gaseous propylene-air explosions in spherical and cylindrical enclosures.
The rate of pressure rise of gaseous propylene-air explosions in spherical and cylindrical enclosures.
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DOI：
10.1016/j.jhazmat.2006.05.103
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发表时间：
2007-01
影响因子：
13.6
通讯作者：
D. Razus;Codina Movileanua;D. Oancea
中科院分区：
文献类型：
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作者：
D. Razus;Codina Movileanua;D. Oancea
报告了在不同初始压力和不同燃料/氧气比下，在三个密闭容器（一个中心点火的球形容器和两个中心或顶部点火的圆柱形容器）中丙烯-空气爆炸的最大压力上升率。在静止混合物爆炸中，在恒定的初始温度和燃料/氧气比下，最大压力上升速率与总初始压力呈线性关系。所发现的相关性的斜率和截距受到容器的体积和形状以及点火源位置的很大影响，这些因素决定了密闭容器爆炸中燃烧气体的热损失量。讨论了丙烯-空气惰性混合物的类似数据，并与丙烯-空气惰性混合物的数据进行了比较，揭示了惰性添加剂的性质和用量对其性能的影响。中心点火爆炸的爆燃指数kgg也由最大升压率计算。
The maximum rates of pressure rise of propylene–air explosions at various initial pressures and various fuel/oxygen ratios in three closed vessels (a spherical vessel with central ignition and two cylindrical vessels with central or with top ignition) are reported. It was found that in explosions of quiescent mixtures the maximum rates of pressure rise are linear functions on total initial pressure, at constant initial temperature and fuel/oxygen ratio. The slope and intercept of found correlations are greatly influenced by vessel's volume and shape and by the position of the ignition source — factors which determine the amount of heat losses from the burned gas in a closed vessel explosion. Similar data on propylene–air inert mixtures are discussed in comparison with those referring to propylene–air, revealing the influence of nature and amount of inert additive. The deflagration index KGof centrally ignited explosions was also calculated from maximum rates of pressure rise.