Two-dimensional simulation of fast gas heating in an atmospheric pressure streamer discharge and humidity effects

Atsushi Komuro, Ryo Ono

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Gas heating in an atmospheric-pressure streamer discharge was analysed by a two-dimensional streamer discharge simulation model describing internal molecular energy transfer. Our two-dimensional streamer simulation model incorporates concepts from the fast gas heating mechanism proposed by Popov (2011 J. Phys. D: Appl. Phys. 44 285201) and our self-developed state-to-state vibrational kinetics. In dry air, gas heating occurs mainly from electron-impact dissociation reactions of O2 molecules and from quenching processes of electronically excited N2(B 3Πg, C 3Πu) molecules and O(1D) atoms. In humid air, rapid vibration-to-translation transitions of H2O and the exothermicity of the OH formation reactions additionally increase the gas temperature. It is shown that gas heating during the discharge pulse increases with humidity.

Original languageEnglish
Article number155202
JournalJournal of Physics D: Applied Physics
Volume47
Issue number15
DOIs
Publication statusPublished - 2014 Apr 16
Externally publishedYes

Keywords

  • chemical reaction
  • gas heating
  • numerical simulation
  • radical production
  • streamer discharge

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Two-dimensional simulation of fast gas heating in an atmospheric pressure streamer discharge and humidity effects'. Together they form a unique fingerprint.

  • Cite this