2-D Modeling of Orificed Hollow Cathodes of Stationary Plasma Thrusters SPT-100

In this paper, 2-D extended fluid model for the simulation of orificed hollow cathode (OHC) discharge in xenon flow of SPT-100 thruster was built using Comsol Multiphysics. Self-consistent discharge model is based on fluid description of ions and excited neutral species and uses drift-diffusion appr...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2015-12, Vol.43 (12), p.4024-4033
Main Authors: Hui Liu, Min Li, Zhongxi Ning, Junxue Ren, Haibin Tang, Daren Yu, Demidov, Evgenii V., Eliseev, Stepan I., Kudryavtsev, Anatoly A.
Format: Article
Language:English
Subjects:
Arc discharges
Cathodes
Electric fields
Electrons
Heat transfer
Mathematical model
Mathematical models
Plasma devices
Plasma physics
plasma simulation
Simulation
Xenon
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Summary:In this paper, 2-D extended fluid model for the simulation of orificed hollow cathode (OHC) discharge in xenon flow of SPT-100 thruster was built using Comsol Multiphysics. Self-consistent discharge model is based on fluid description of ions and excited neutral species and uses drift-diffusion approximation for the particle fluxes. Electron transport and rates of electron-induced plasma-chemical reactions are calculated using Boltzmann equation for electron energy distribution function and corresponding collision cross sections. A reasonable set of plasma-chemical processes with electrons, ions, and excited and neutral particles were considered. The model accounts for gas flow and heating. Self-consistent electric field is calculated from the Poisson equation. The model geometry reproduces that of the experimental OHC for stationary plasma thruster SPT-100, which was studied in Harbin Institute of Technology. Simulations were carried out for different operational modes of the OHC. Distributions of key discharge parameters were obtained. A comparison between the simulation results and experimental data was conducted and showed good agreement.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2015.2457677