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Numerical methodology to evaluate unipolar saturation current limit of DC corona discharge in complex geometries.

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  • المؤلفون: Kim S;Kim S; Hwang J; Hwang J
  • المصدر:
    Scientific reports [Sci Rep] 2022 Aug 22; Vol. 12 (1), pp. 14252. Date of Electronic Publication: 2022 Aug 22.
  • نوع النشر :
    Journal Article
  • اللغة:
    English
  • معلومة اضافية
    • المصدر:
      Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: PubMed not MEDLINE; MEDLINE
    • بيانات النشر:
      Original Publication: London : Nature Publishing Group, copyright 2011-
    • نبذة مختصرة :
      The unipolar saturation current limit ([Formula: see text]) gives an upper limit to the corona current that can be obtained from a unipolar corona discharge. Therefore, it implies a theoretical limit to the performance of unipolar corona discharge devices. However, it has not been widely used in practice because it is difficult to deal with complex discharge configurations in an analytical way. This study aims to establish and validate a numerical methodology to evaluate the maximum current, which numerically imitates the unipolar saturation current limit. It was shown that the maximum current has the same mathematical definition as the unipolar saturation current. For validation, the maximum current was compared with an analytical solution of the Poisson equation for the coaxial cylinders configuration. The differences between the maximum current and unipolar saturation current limit for the coaxial cylinders, pin-to-plane, and single wire-to-plane configurations were discussed in terms of the assumptions used in the semi-analytical derivation of the unipolar saturation current limit. The validated methodology was applied to a multiple wire-to-plane configuration, for which a semi-analytical expression of the unipolar saturation current limit has not yet been developed. The effects of geometric and operation parameters on the maximum currents of the multiple wire-to-plane configuration were analyzed. The results were regressed into a single formula.
      (© 2022. The Author(s).)
    • References:
      ACS Appl Mater Interfaces. 2021 Sep 29;13(38):45966-45976. (PMID: 34528781)
    • Grant Information:
      21QPPW-B152306-03 Ministry of Land, Infrastructure and Transport; 21QPPW-B152306-03 Ministry of Land, Infrastructure and Transport
    • الموضوع:
      Date Created: 20220822 Latest Revision: 20220826
    • الموضوع:
      20231215
    • الرقم المعرف:
      PMC9395384
    • الرقم المعرف:
      10.1038/s41598-022-18144-5
    • الرقم المعرف:
      35995820