Deposition of lognormally distributed aerosols accounting for simultaneous diffusion, thermophoresis and coagulation

Hsun-Ling Bai, Pratim Biswas*

*Corresponding author for this work

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

A moment model to predict deposition rates of lognormally distributed aerosols onto cylindrical surfaces in cross flow was developed taking into account diffusion, thermophoresis and coagulation. The results of the moment model are in excellent agreement with the solution of Friedlander [Friedlander (1977) Smoke, Dust and Haze. Wiley, New York] for the limiting case of monodisperse aerosols in absence of coagulation. Deposition rates for polydisperse aerosols determined by the moment model are in good agreement with solutions obtained by integrating Friedlander's monodisperse aerosol results over the entire size distribution. Deposition rates have also been determined due to diffusion accounting for coagulation, and due to diffusion and thermophoresis accounting for coagulation having applicability in deposition of high concentration aerosols encountered in industrial systems such as manufacture of optical fibers by the OVD process or heat exchangers in boilers.

Original languageEnglish
Pages (from-to)629-640
Number of pages12
JournalJournal of Aerosol Science
Volume21
Issue number5
DOIs
StatePublished - 1 Jan 1990

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