A new hybrid scheme for simulations of highly collisional RF-driven plasmas
A new hybrid scheme for simulations of highly collisional RF-driven plasmas
复制标题
用于模拟高度碰撞射频驱动等离子体的新混合方案
DOI:
10.1088/0963-0252/25/1/015009
复制
发表时间:
2016
影响因子:
3.8
通讯作者:
T. Mussenbrock
中科院分区:
文献类型:
--
作者:
D. Eremin;T. Hemke;T. Mussenbrock
This work describes a new 1D hybrid approach for modeling atmospheric pressure discharges featuring complex chemistry. In this approach electrons are described fully kinetically using particle-in-cell/Monte-Carlo (PIC/MCC) scheme, whereas the heavy species are modeled within a fluid description. Validity of the popular drift-diffusion approximation is verified against a'full'fluid model accounting for the ion inertia and a fully kinetic PIC/MCC code for ions as well as electrons. The fluid models require knowledge of the momentum exchange frequency and dependence of the ion mobilities on the electric field when the ions are in equilibrium with the latter. To this end an auxiliary Monte-Carlo scheme is constructed. It is demonstrated that the drift-diffusion approximation can overestimate ion transport in simulations of RF-driven discharges with heavy ion species operated in the γ mode at the atmospheric pressure or in all discharge simulations for lower pressures. This can lead to exaggerated plasma densities and incorrect profiles provided by the drift-diffusion models. Therefore, the hybrid code version featuring the full ion fluid model should be favored against the more popular drift-diffusion model, noting that the suggested numerical scheme for the former model implies only a small additional computational cost.
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影响因子:
3.8
作者:
Kawamura, E.;Lieberman, M. A.;Lazzaroni, C.
通讯作者:
Lazzaroni, C.
影响因子:
2.2
作者:
M. Turner;A. Derzsi;Z. Donkó;D. Eremin;S. Kelly;T. Lafleur;T. Mussenbrock
通讯作者:
M. Turner;A. Derzsi;Z. Donkó;D. Eremin;S. Kelly;T. Lafleur;T. Mussenbrock
影响因子:
3.8
作者:
Eremin, Denis;Hemke, Torben;Mussenbrock, Thomas
通讯作者:
Mussenbrock, Thomas
DOI:
10.1088/0963-0252/13/2/018
发表时间:
2003-08
期刊:
--
影响因子:
--
作者:
I. Schweigert;V. Schweigert
通讯作者:
I. Schweigert;V. Schweigert
影响因子:
3.8
作者:
Hemke, T.;Eremin, D.;Schulze, J.
通讯作者:
Schulze, J.