The aerosol penetration through an electret fibrous filter

Wei Jiang, Chun Shun Cheung, Cheong Ki Chan, Chao Zhu

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


The aim of this paper is to present a theoretical study of the aerosol penetration through an electret fibrous filter, using a numerical approach. The aerosol sizes considered in this study were in the submicron range, and in the numerical model, the conventional mechanical mechanisms (impaction, interception, diffusion and gravitationally settling) were taken into consideration along with the electrostatic mechanisms, including the Coulombic and dielectrophoretic effects. The aerosol penetration through an electret fibrous filter is heavily dependent on the aerosol penetration of a single fibre. The aerosol penetration through a single electret fibre under various filtration conditions was calculated. The effects of aerosol diameter, aerosol and fibre charge state, face velocity, packing density and aerosol dielectric constant on the aerosol penetration were investigated.

Original languageEnglish (US)
Article number039
Pages (from-to)1864-1870
Number of pages7
JournalChinese Physics
Issue number8
StatePublished - Aug 1 2006

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


  • Aerosol penetration through an electret fibre
  • Electrostatic mechanism
  • Mechanical mechanism


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