Hybrid computer modelling in plasma physics

27th IUPAP Conference on Computational Physics

物理学;计算机科学

Hromadka, J.^1 ; Ibehej, T.^1 ; Hrach, R.^1

Department of Surface and Plasma Science, Charles University in Prague, V Holesovickach 2, Prague 8

180 00, Czech Republic^1

关键词: Chapman-Enskog methods;    Computer modelling;    Different pressures;    Hybrid modelling;    Low temperatures;    Low-pressure area;    Particle distribution functions;    Sheath structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/759/1/012066/pdf
DOI  :  10.1088/1742-6596/759/1/012066

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Our contribution is devoted to development of hybrid modelling techniques. We investigate sheath structures in the vicinity of solids immersed in low temperature argon plasma of different pressures by means of particle and fluid computer models. We discuss the differences in results obtained by these methods and try to propose a way to improve the results of fluid models in the low pressure area. There is a possibility to employ Chapman-Enskog method to find appropriate closure relations of fluid equations in a case when particle distribution function is not Maxwellian. We try to follow this way to enhance fluid model and to use it in hybrid plasma model further.