Modeling of flow dynamics in laminar aerosol flow tubes

Alexei Khalizov, Michael E. Earle, Wayde J.W. Johnson, Gordon D. Stubley, James J. Sloan

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Flow behaviour in laminar aerosol flow tubes was investigated using a Computational Fluid Dynamics (CFD) model. Since these flow tubes are typically operated at low gas velocity, even small temperature gradients produce convection currents strong enough to interfere with laminar flow. This results in recirculation, causing the residence times of aerosol particles to be poorly defined. The situation is exacerbated when temperature inversions are present, or when the flow direction and temperature are changed simultaneously. We analyzed several characteristic flow tube configurations to define the range of experimental conditions that will ensure a laminar flow profile with minimal recirculation. For a laminar flow situation, we evaluated the extent of diffusion-controlled exchange between aerosol and the flow tube wall.

Original languageEnglish (US)
Pages (from-to)1174-1187
Number of pages14
JournalJournal of Aerosol Science
Volume37
Issue number10
DOIs
StatePublished - Jan 1 2006

Fingerprint

Pipe flow
Aerosols
Laminar flow
aerosol
laminar flow
modeling
Thermal gradients
Particles (particulate matter)
Dynamic models
Computational fluid dynamics
temperature inversion
Gases
computational fluid dynamics
Temperature
temperature gradient
residence time
convection
gas
temperature

All Science Journal Classification (ASJC) codes

  • Pollution
  • Materials Science(all)
  • Environmental Chemistry

Keywords

  • Aerosol
  • Atmosphere
  • Computational fluid dynamics
  • Flow tube
  • Infrared spectroscopy

Cite this

Khalizov, A., Earle, M. E., Johnson, W. J. W., Stubley, G. D., & Sloan, J. J. (2006). Modeling of flow dynamics in laminar aerosol flow tubes. Journal of Aerosol Science, 37(10), 1174-1187. https://doi.org/10.1016/j.jaerosci.2005.11.008
Khalizov, Alexei ; Earle, Michael E. ; Johnson, Wayde J.W. ; Stubley, Gordon D. ; Sloan, James J. / Modeling of flow dynamics in laminar aerosol flow tubes. In: Journal of Aerosol Science. 2006 ; Vol. 37, No. 10. pp. 1174-1187.
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Khalizov, A, Earle, ME, Johnson, WJW, Stubley, GD & Sloan, JJ 2006, 'Modeling of flow dynamics in laminar aerosol flow tubes', Journal of Aerosol Science, vol. 37, no. 10, pp. 1174-1187. https://doi.org/10.1016/j.jaerosci.2005.11.008

Modeling of flow dynamics in laminar aerosol flow tubes. / Khalizov, Alexei; Earle, Michael E.; Johnson, Wayde J.W.; Stubley, Gordon D.; Sloan, James J.

In: Journal of Aerosol Science, Vol. 37, No. 10, 01.01.2006, p. 1174-1187.

Research output: Contribution to journalArticle

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T1 - Modeling of flow dynamics in laminar aerosol flow tubes

AU - Khalizov, Alexei

AU - Earle, Michael E.

AU - Johnson, Wayde J.W.

AU - Stubley, Gordon D.

AU - Sloan, James J.

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