The morphology of streamer coronas
- Lawrence Livermore National Lab., CA (United States)
Streamer coronas are of interest due to their application to pollution control devices. A streamer coronal discharge produces energetic electrons which, through dissociation and ionization processes, generate active radicals that in turn react with toxic molecules. The morphology of streamer coronas determines the energy distribution of the electrons produced. Streamers propagate due to a highly non-linear space charge driven ionization wave. Because of the complexity of the equations describing streamer dynamics, most of the numerical simulations have been restricted to one (longitudinal) spatial dimension. Some low resolution 2-D simulations have been previously performed, but so far have been restricted to plane-parallel electrode configurations. The authors have developed multi-dimensional streamer models that can be applied to arbitrarily shaped electrode structures. Their models have generated the first multi-dimensional fully resolved streamers which form self-consistent radial structure. They have applied these codes to study some of the issues related to finding the optimum working conditions for streamer corona reactors. Their results show that the radial components of the electron flow and the space charge field are very important in providing an accurate picture of the streamer morphology, especially near the highly stressed electrode.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 127969
- Report Number(s):
- CONF-920376--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 37; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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