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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, 95 (4), 043208. American Physical Society. doi: 10.1103/PhysRevE.95.043208. ISSN 2470-0045.

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Official URL: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.95.043208


A 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/112700/
Document Type:Article
Title:Moment fluid equations for ions in weakly ionized plasma
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Semenov, IgorUNSPECIFIEDhttps://orcid.org/0000-0001-6689-448XUNSPECIFIED
Date:18 April 2017
Journal or Publication Title:Physical Review E
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:043208
Publisher:American Physical Society
Keywords:low-temperature plasma, fluid models, numerical modelling, radio-frequency discharges
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:13 Jun 2017 14:51
Last Modified:17 Mar 2021 13:40

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