Numerical simulation for the production of chemically active species in primary and secondary streamers in atmospheric-pressure dry air
Numerical simulation for the production of chemically active species in primary and secondary streamers in atmospheric-pressure dry air
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DOI：
10.1088/0022-3727/48/21/215203
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发表时间：
2015-04
期刊：
影响因子：
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通讯作者：
A. Komuro;Kazunori Takahashi;A. Ando
中科院分区：
文献类型：
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作者：
A. Komuro;Kazunori Takahashi;A. Ando
利用二维轴对称数值模拟模型研究了一次流和二次流中化学活性组分的产生。N2（v = 1），O（3P）和N（4S），其中每一个都有不同的阈值能量的生产过程中，模拟使用实验获得的脉冲电压峰值，Vpeak，为18，24和30千伏，在大气压力下的干燥空气中。当Vpeak增加时，次级流光的模拟长度增加，尽管初级流光特性几乎没有变化。这意味着次级流光相位与初级流光相位的比率随着Vpeak的增加而增加。模拟结果表明，随着Vpeak的增大，O（3P）生成的能量效率增大，N2（v = 1）生成的能量效率减小.另一方面，N（4S）生产的能量效率降低了对Vpeak的依赖性。这些特性可以解释的时空变化的减少电场在初级和次级流注。
Production of chemically active species in primary and secondary streamers is investigated using a two-dimensional axisymmetric numerical simulation model. The production processes of N2(v = 1), O(3P) and N(4S), which each have different threshold energies, are simulated using experimentally obtained pulsed voltages with peak values, Vpeak, of 18, 24 and 30 kV in dry air at atmospheric pressure. As Vpeak increases, the simulated length of the secondary streamer increases, although there is little change in the primary streamer characteristics. This means that the ratio of the secondary streamer phase to the primary streamer phase increases for increasing Vpeak. The simulated results show that as Vpeak increases, the energy efficiency of O(3P) production increases and that of N2(v = 1) production decreases. On the other hand, the energy efficiency of N(4S) production has reduced dependence on Vpeak. These characteristics can be explained by the spatiotemporal variations of the reduced electric field in the primary and secondary streamer.