J 2023

Comparison between 1D radial and 0D global models for low-pressure oxygen DC glow discharges

ARSÉNIO NUNES ALEIXO VIEGAS, Pedro, Tiago Cunha DIAS, Chloe FROMENTIN, Alexander CHUKALOVSKY, Yuri MANKELEVICH et. al.

Basic information

Original name

Comparison between 1D radial and 0D global models for low-pressure oxygen DC glow discharges

Authors

ARSÉNIO NUNES ALEIXO VIEGAS, Pedro (620 Portugal, belonging to the institution), Tiago Cunha DIAS, Chloe FROMENTIN, Alexander CHUKALOVSKY, Yuri MANKELEVICH, Olga PROSHINA, Tatyana RAKHIMOVA, Vasco GUERRA and Dmitry VOLOSHIN

Edition

Plasma Sources Science and Technology, IOP Publishing Ltd, 2023, 0963-0252

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10305 Fluids and plasma physics

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.800 in 2022

RIV identification code

RIV/00216224:14310/23:00131231

Organization unit

Faculty of Science

UT WoS

000939001700001

Keywords in English

oxygen kinetics; discharge spatial resolution; global model; fluid model

Tags

Tags

International impact, Reviewed
Změněno: 21/2/2024 16:14, Mgr. Marie Šípková, DiS.

Abstract

V originále

This work focuses on the comparison between a zero-dimensional (0D) global model (LoKI) and a one-dimensional (1D) radial fluid model for the positive column of oxygen DC glow discharges in a tube of 1 cm inner radius at pressures between 0.5 Torr and 10 Torr. The data used in the two models are the same, so that the difference between the models is reduced to dimensionality. A good agreement is found between the two models on the main discharge parameters (gas temperature, electron density, reduced electric field and dissociation fraction), with relative differences below 5%. The agreement on other species average number densities, charged and neutral, is slightly worse, with relative differences increasing with pressure from 11% at 0.5 Torr to 57% at 10 Torr. The success of the 0D global model in describing these plasmas through volume averaged quantities decreases with pressure, due to pressure-driven narrowing of radial profiles. Hence, in the studied conditions, we recommend the use of volume-averaged models only in the pressure range up to 10 Torr.

Links

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