Porous media quenching behaviors of gas deflagration in the presence of obstacles
Porous media quenching behaviors of gas deflagration in the presence of obstacles
复制标题
存在障碍物时多孔介质气体爆燃的淬火行为
DOI：
10.1016/j.expthermflusci.2013.05.002
复制
发表时间：
2013-10
影响因子：
3.2
通讯作者：
Wentao Ji
中科院分区：
文献类型：
--
作者：
Xiaoping Wen;Maozhao Xie;Minggao Yu;Guo Li;Wentao Ji
为了解障碍物存在时气体爆燃的多孔介质猝灭机理，进行了实验研究，并在实验室规模的阻塞室中对10种不同障碍物数量、多孔介质孔径、厚度和材料的情况进行了研究。结果表明，若预混火焰远离点火源传播时在到达多孔介质前遇到障碍物，火焰与障碍物的相互作用将导致火焰速度和超压增大，从而可能导致多孔介质熄火操作失败。火焰通道中障碍物的数量对多孔介质的熄焰行为有影响，且多孔介质板的孔径越小或厚度越厚，火焰熄焰性能越好，但流过多孔介质的超压下降越大。多孔介质的材料也被发现有显着的气体爆燃的猝灭特性的影响。与Al2O3和SiC相比，Al多孔介质具有上级火焰熄灭和超压衰减性能。所观察到的现象的机制进行了详细讨论。
To understand the mechanism for the porous media quenching of gas deflagration in the presence of obstacles, an experimental study has been conducted, and ten cases in a laboratory scale obstructed chamber varying in terms of the number of obstacles, porous media pore size, thickness, and material have been examined. The results show that if the premixed flame propagating away from an ignition source encounters obstacles before the flame front arrives to the porous media, the interaction between flame and obstacles will result in higher flame speed and overpressure, which may cause a failure in the operation of porous media quenching. The porous media quenching behavior is dependent on the number of the obstacles in the flame path. Moreover, the smaller the pore size or the thicker the porous media plate, the better the flame quenching performance, but the larger the drop of the overpressure for flow-through the porous media. The material of the porous media is also found to have a significant effect on the quenching characteristics of gas deflagration. Compared to Al2O3and SiC, the Al porous media shows superior flame quenching and overpressure attenuating performances. Mechanisms for the observed phenomena are discussed in detail.
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影响因子：
7.4
作者：
Lvyi Chen;Wei Zhu;Xin Cai;L. Pan;G. Liao
通讯作者：
Lvyi Chen;Wei Zhu;Xin Cai;L. Pan;G. Liao
影响因子：
6.1
作者：
V. S. Babkin
通讯作者：
V. S. Babkin
影响因子：
8.4
作者：
K. L. Edwards;M. Norris
通讯作者：
K. L. Edwards;M. Norris
影响因子：
4.4
作者：
S. Gubba;S. Ibrahim;W. Malalasekera;A. Masri
通讯作者：
S. Gubba;S. Ibrahim;W. Malalasekera;A. Masri
DOI：
10.1007/bf00790150
发表时间：
1994
期刊：
Combustion, Explosion and Shock Waves
影响因子：
--
作者：
A. V. Pinaev
通讯作者：
A. V. Pinaev