论文标题
低压氧DC发光排放的流体和全局模型之间的基准测试
Benchmarking between fluid and global models for low-pressure oxygen DC glow discharges
论文作者
论文摘要
这项工作着重于零维（0D）全局模型（LOKI）与氧气DC GLOW放电的正柱的一维（1D）径向流体模型之间的基准测试，该模型在压力为0.5 Torr之间的1 cm内半径中的管子中，在0.5 Torr之间。两个模型中使用的数据是相同的，因此模型之间的差异降低为维度。在两个模型之间在主要放电参数上发现了一个良好的一致性，相对差异低于5％。对物种平均数量密度的同意（充电和中性）稍差，随着压力的相对差异从0.5 TORR的11％增加到10 TORR时的57％。 0D全局模型通过体积平均数量描述这些等离子体的成功随着压力驱动的径向轮廓的狭窄而降低。因此，在研究的条件下，我们建议仅在最高10个TORR的压力范围内使用体积平均模型。
This work focuses on the benchmarking between a zero-dimensional (0D) global model (LoKI) and a one-dimensional (1D) radial fluid model for the positive column of oxygen DC glow discharges in a tube of 1 cm inner radius at pressures between 0.5 Torr and 10 Torr. The data used in the two models are the same, so that the difference between the models is reduced to dimensionality. A good agreement is found between the two models on the main discharge parameters, with relative differences below 5%. The agreement on species average number densities, charged and neutral, is slightly worse, with relative differences increasing with pressure from 11% at 0.5 Torr to 57% at 10 Torr. The success of the 0D global model in describing these plasmas through volume averaged quantities decreases with pressure, due to pressure-driven narrowing of radial profiles. Hence, in the studied conditions, we recommend the use of volume-averaged models only in the pressure range up to 10 Torr.
