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Moment fluid equations for ions in weakly-ionized plasma

Semenov, Igor (2017) Moment fluid equations for ions in weakly-ionized plasma. Physical Review E. American Physical Society. doi: 10.1103/physreve.95.043208. ISSN 2470-0045. (Submitted)

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A new one-dimensional fluid model for ions in weakly-ionized plasma is proposed. The model differs from the existing ones in two aspects. First, a more accurate approximation of the collision terms in the fluid equations is suggested. For this purpose, the results obtained using the Monte-Carlo kinetic model of the ion swarm experiments are considered. Second, the ion energy equation is taken into account. The fluid equations are closed using a simple model of the ion velocity distribution function. The accuracy of the fluid model is examined by comparing with the results of particle-in-cell/Monte Carlo simulations. In particular, several test problems are considered using a parallel plate model of the capacitively coupled radio-frequency discharge. It is shown that the results obtained using the proposed fluid model are in good agreement with those obtained from the simulations over a wide range of discharge conditions. An approximation of the ion velocity distribution function for the problem under consideration is also discussed.

Item URL in elib:https://elib.dlr.de/110404/
Document Type:Article
Title:Moment fluid equations for ions in weakly-ionized plasma
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Semenov, Igorforschungsgruppe komplexe plasmen, dlr, ophttps://orcid.org/0000-0001-6689-448XUNSPECIFIED
Journal or Publication Title:Physical Review E
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:American Physical Society
Keywords:Fluid equations. low-pressure plasma, hybrid methods, PIC-MCC simulations
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Komplexe Plasmen / Theory, Simulation (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Semenov, Igor (Admin.), Funktional
Deposited On:10 Jan 2017 14:51
Last Modified:15 Jun 2023 08:52

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