Derivation of a merging condition for two interacting streamers in air

BONAVENTURA, Zdeněk, Max DUARTE, Anne BOURDON and Marc MASSOT. Derivation of a merging condition for two interacting streamers in air. PLASMA SOURCES SCIENCE & TECHNOLOGY. 2012, vol. 21, No 5, p. "nestránkováno", 5 pp. ISSN 0963-0252. Available from: https://dx.doi.org/10.1088/0963-0252/21/5/052001.

Basic information

• Original name: Derivation of a merging condition for two interacting streamers in air
• Authors: BONAVENTURA, Zdeněk (203 Czech Republic, guarantor, belonging to the institution), Max DUARTE (600 Paraguay), Anne BOURDON (250 France) and Marc MASSOT (250 France).
• Edition: PLASMA SOURCES SCIENCE & TECHNOLOGY, 2012, 0963-0252.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10305 Fluids and plasma physics
• Country of publisher: United Kingdom of Great Britain and Northern Ireland
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 2.515
• RIV identification code: RIV/00216224:14310/12:00060581
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1088/0963-0252/21/5/052001
• UT WoS: 000309590200001
• Keywords in English: streamer discharge; plasma simulation; multi scale method
• Tags: AKR

Abstract

In this work, we have carried out a parametric study on the interaction of two streamers in air using 2D numerical simulations based on an accurate numerical method which ensures a time-space error control of the solution. This study is a first step towards a quantitative analysis of streamer merging in real 3D conditions. We have shown that for a initial separation between streamers that is smaller or comparable to the longest characteristic absorption length of photoionization (0.1408 cm at the ground pressure), streamers will start to merge, i.e., the distance between their trajectories starts to decrease despite their electrostatic repulsion, at the moment when the ratio D/d of the streamer characteristic width D and the streamer mutual distance d attains a value of about 0.35 for positive streamers, and 0.4 for negative ones. These ratios are independent of the applied field, the initial seed configuration, and pressure. Moreover presented results clearly illustrate the significant role of photoionization on the streamer merging.

Links

• ED2.1.00/03.0086, research and development project: Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy