Advanced

The propagation of positive streamers in a weak and uniform background electric field

Serdyuk, Y. V; Larsson, A; Gubanski, S. M and Akyuz, M (2001) In Journal of Physics D: Applied Physics 34(4). p.614-623
Abstract
The results of numerical simulations of a positive streamer development in air in a weak and uniform electric field are presented. Streamer dynamics is considered in an electrode gap of 33 mm in length and the configuration was 'protrusion on a plate-plate'. This particular configuration was chosen in order to perform direct comparison between simulated results and experimental data. The electrostatic field in such a system decreases rapidly with increase of the distance from the protrusion (anode) and the region with a weak and uniform background field covers similar to 30 mm of the gap. The parameters of the propagating streamer are studied at six different values of the background field strength: 0.24; 0.30; 0.345; 0.37; 0.43 and 0.50... (More)
The results of numerical simulations of a positive streamer development in air in a weak and uniform electric field are presented. Streamer dynamics is considered in an electrode gap of 33 mm in length and the configuration was 'protrusion on a plate-plate'. This particular configuration was chosen in order to perform direct comparison between simulated results and experimental data. The electrostatic field in such a system decreases rapidly with increase of the distance from the protrusion (anode) and the region with a weak and uniform background field covers similar to 30 mm of the gap. The parameters of the propagating streamer are studied at six different values of the background field strength: 0.24; 0.30; 0.345; 0.37; 0.43 and 0.50 MV m(-1). Stable streamer development (with constant velocity) takes place in a field of 0.5 MV m(-1) (the stability field) but the streamer is able to cross the gap in a background field of 0.3 MV m(-1). These values are in excellent agreement with experimental data. During the stable streamer propagation, the electron density and plasma conductivity in the discharge channel and the electric field at its front remain constant. In a background field lower than 0.5 MV m(-1), the discharge front velocity and the electric field at the front decrease linearly with an increase of streamer length. The discharge propagation in the stability field is associated with an increase of electrostatic energy at the streamer front but it decreases if the streamer develops in a weaker electric field. This behaviour is accompanied by a constant Joule dissipation at 0.5 MV m(-1) and decreasing energy losses at the streamer front in a weaker background electric field. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics D: Applied Physics
volume
34
issue
4
pages
614 - 623
publisher
IOP Publishing
external identifiers
  • Scopus:0035248822
ISSN
1361-6463
DOI
10.1088/0022-3727/34/4/323
language
English
LU publication?
no
id
6e0b6e25-2380-4026-9041-3c51a72eccd6 (old id 2259345)
date added to LUP
2012-02-10 00:18:59
date last changed
2016-10-13 04:35:03
@misc{6e0b6e25-2380-4026-9041-3c51a72eccd6,
  abstract     = {The results of numerical simulations of a positive streamer development in air in a weak and uniform electric field are presented. Streamer dynamics is considered in an electrode gap of 33 mm in length and the configuration was 'protrusion on a plate-plate'. This particular configuration was chosen in order to perform direct comparison between simulated results and experimental data. The electrostatic field in such a system decreases rapidly with increase of the distance from the protrusion (anode) and the region with a weak and uniform background field covers similar to 30 mm of the gap. The parameters of the propagating streamer are studied at six different values of the background field strength: 0.24; 0.30; 0.345; 0.37; 0.43 and 0.50 MV m(-1). Stable streamer development (with constant velocity) takes place in a field of 0.5 MV m(-1) (the stability field) but the streamer is able to cross the gap in a background field of 0.3 MV m(-1). These values are in excellent agreement with experimental data. During the stable streamer propagation, the electron density and plasma conductivity in the discharge channel and the electric field at its front remain constant. In a background field lower than 0.5 MV m(-1), the discharge front velocity and the electric field at the front decrease linearly with an increase of streamer length. The discharge propagation in the stability field is associated with an increase of electrostatic energy at the streamer front but it decreases if the streamer develops in a weaker electric field. This behaviour is accompanied by a constant Joule dissipation at 0.5 MV m(-1) and decreasing energy losses at the streamer front in a weaker background electric field.},
  author       = {Serdyuk, Y. V and Larsson, A and Gubanski, S. M and Akyuz, M},
  issn         = {1361-6463},
  language     = {eng},
  number       = {4},
  pages        = {614--623},
  publisher    = {ARRAY(0x8ed90a0)},
  series       = {Journal of Physics D: Applied Physics},
  title        = {The propagation of positive streamers in a weak and uniform background electric field},
  url          = {http://dx.doi.org/10.1088/0022-3727/34/4/323},
  volume       = {34},
  year         = {2001},
}