Influence of catalyst packing configuration on the discharge characteristics of dielectric barrier discharge reactors: A numerical investigation
Influence of catalyst packing configuration on the discharge characteristics of dielectric barrier discharge reactors: A numerical investigation
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DOI：
10.1063/1.5030508
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发表时间：
2018-06
影响因子：
2.2
通讯作者：
Siddharth Gadkari;S. Gu
中科院分区：
文献类型：
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作者：
Siddharth Gadkari;S. Gu
为了研究填料结构对介质阻挡放电特性的影响，建立了二维数值流体模型。比较了无填料、部分填料和完全填料三种DBD结构的放电电流分布、时间平均电场强度、电子数密度和电子温度分布。结果表明，与部分填料或不填料相比，当DBD完全填料时，放电行为发生强烈变化。虽然完全填充DBD的平均电场强度和电子温度相对于其他DBD配置较高，但平均电子密度明显较低，在某些操作条件下可能会影响DBD反应器的性能。还讨论了等离子体与催化剂结合的协同效应的可能情况。
A two-dimensional numerical fluid model is developed for studying the influence of packing configurations on dielectric barrier discharge (DBD) characteristics. Dis- charge current profiles, and time averaged electric field strength, electron number density and electron temperature distributions are compared for the three DBD configurations, plain DBD with no packing, partially packed DBD and fully packed DBD. The results show a strong change in discharge behaviour occurs when a DBD is fully packed as compared to partial packing or no packing. While the average electric field strength and electron temperature of a fully packed DBD are higher relative to the other DBD configurations, the average electron density is substantially lower and may impede the DBD reactor performance under certain operating conditions. Possible scenarios of the synergistic effect of the combination of plasma with catalysis are also discussed.