Capturing photoionization shadows in streamer simulations using
the discrete ordinates method

J 2023

Capturing photoionization shadows in streamer simulations using the discrete ordinates method

TUNGLI, Ján, Miroslav HORKÝ, Stanislav KADLEC a Zdeněk BONAVENTURA

Základní údaje

Originální název

Capturing photoionization shadows in streamer simulations using the discrete ordinates method

Autoři

TUNGLI, Ján (703 Slovensko, domácí), Miroslav HORKÝ, Stanislav KADLEC a Zdeněk BONAVENTURA (203 Česká republika, garant, domácí)

Vydání

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

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10305 Fluids and plasma physics

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.800 v roce 2022

Kód RIV

RIV/00216224:14310/23:00132994

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1088/1361-6595/acfcd8

UT WoS

001081544200001

Klíčová slova anglicky

streamer simulation; photoionization; discrete ordinates

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 21. 2. 2024 14:20, Mgr. Marie Šípková, DiS.

Anotace

V originále

Numerical simulations of streamer propagation involving photoionization are presented, utilizing an ANSYS Fluent implementation that employs unstructured meshes and automatic mesh refinement. Two approximate methods for radiative transfer, used to handle computation of the photoionization source terms, are compared: the Eddington approximation and the discrete ordinates (DOs) method. The former is commonly employed in streamer simulations, while the latter is well-established in other branches of computational physics, such as radiative heat transfer. A 2D test case with two distinct regions, where streamer propagation can be triggered thanks to the protruded electrodes, is introduced. The two regions are partially separated by an opaque solid insulator barrier to study the effects of photoionization shadows on streamer inception and propagation. The primary positive streamer is initiated by placing a neutral plasma patch close to one of the electrode protrusions, while the secondary positive streamer, in the other region of the computational domain, is initiated by photoionization originating from the primary streamer zone. The Eddington approximation results in an excessively high photoionization source in the secondary streamer inception zone, as it fails to capture the shadowing effects of the opaque dielectric barrier. Consequently, this leads to a fast secondary streamer inception process, followed by rapid streamer propagation. On the other hand, the DOs method accurately captures the shadow, leading to a delayed secondary streamer inception. It is also shown that both methods exhibit very similar results when the dielectric barrier is transparent and the shadow is absent. This work demonstrates that using the DOs method for streamer simulations offers considerable advantages over the Eddington approximation, especially in cases involving more complex geometries where shadows need to be captured for accurate streamer inception and dynamics.

Návaznosti

TK04020069, projekt VaV

Název: Streamery a klouzavé výboje na površích izolantů v alternativních plynech k SF6

Investor: Technologická agentura ČR, Streamery a klouzavé výboje na površích izolantů v alternativních plynech k SF6

90239, velká výzkumná infrastruktura

Název: CEPLANT II

Citovat

TUNGLI, Ján, Miroslav HORKÝ, Stanislav KADLEC a Zdeněk BONAVENTURA. Capturing photoionization shadows in streamer simulations using the discrete ordinates method. Plasma Sources Science and Technology. IOP Publishing Ltd, 2023, roč. 32, č. 10, s. 1-12. ISSN 0963-0252. Dostupné z: https://dx.doi.org/10.1088/1361-6595/acfcd8.

@article{2360052,
   author = {Tungli, Ján and Horký, Miroslav and Kadlec, Stanislav and Bonaventura, Zdeněk},
   article_number = {10},
   doi = {http://dx.doi.org/10.1088/1361-6595/acfcd8},
   keywords = {streamer simulation; photoionization; discrete ordinates},
   language = {eng},
   issn = {0963-0252},
   journal = {Plasma Sources Science and Technology},
   title = {Capturing photoionization shadows in streamer simulations using the discrete ordinates method},
   url = {https://doi.org/10.1088/1361-6595/acfcd8},
   volume = {32},
   year = {2023}
}

TY  - JOUR
ID  - 2360052
AU  - Tungli, Ján - Horký, Miroslav - Kadlec, Stanislav - Bonaventura, Zdeněk
PY  - 2023
TI  - Capturing photoionization shadows in streamer simulations using the discrete ordinates method
JF  - Plasma Sources Science and Technology
VL  - 32
IS  - 10
SP  - 1-12
EP  - 1-12
PB  - IOP Publishing Ltd
SN  - 09630252
KW  - streamer simulation
KW  - photoionization
KW  - discrete ordinates
UR  - https://doi.org/10.1088/1361-6595/acfcd8
N2  - Numerical simulations of streamer propagation involving photoionization are presented, utilizing an ANSYS Fluent implementation that employs unstructured meshes and automatic mesh refinement. Two approximate methods for radiative transfer, used to handle computation of the photoionization source terms, are compared: the Eddington approximation and the discrete ordinates (DOs) method. The former is commonly employed in streamer simulations, while the latter is well-established in other branches of computational physics, such as radiative heat transfer. A 2D test case with two distinct regions, where streamer propagation can be triggered thanks to the protruded electrodes, is introduced. The two regions are partially separated by an opaque solid insulator barrier to study the effects of photoionization shadows on streamer inception and propagation. The primary positive streamer is initiated by placing a neutral plasma patch close to one of the electrode protrusions, while the secondary positive streamer, in the other region of the computational domain, is initiated by photoionization originating from the primary streamer zone. The Eddington approximation results in an excessively high photoionization source in the secondary streamer inception zone, as it fails to capture the shadowing effects of the opaque dielectric barrier. Consequently, this leads to a fast secondary streamer inception process, followed by rapid streamer propagation. On the other hand, the DOs method accurately captures the shadow, leading to a delayed secondary streamer inception. It is also shown that both methods exhibit very similar results when the dielectric barrier is transparent and the shadow is absent. This work demonstrates that using the DOs method for streamer simulations offers considerable advantages over the Eddington approximation, especially in cases involving more complex geometries where shadows need to be captured for accurate streamer inception and dynamics.
ER  -

TUNGLI, Ján, Miroslav HORKÝ, Stanislav KADLEC a Zdeněk BONAVENTURA. Capturing photoionization shadows in streamer simulations using the discrete ordinates method. \textit{Plasma Sources Science and Technology}. IOP Publishing Ltd, 2023, roč.~32, č.~10, s.~1-12. ISSN~0963-0252. Dostupné z: https://dx.doi.org/10.1088/1361-6595/acfcd8.

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