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Comparison of a new Eulerian model with a modified Lagrangian approach for particle distribution and deposition indoors

Authors
  • Lai, Alvin C.K.
  • Chen, F.Z.
Type
Published Article
Journal
Atmospheric Environment
Publisher
Elsevier
Publication Date
Mar 24, 2007
Volume
41
Issue
25
Pages
5249–5256
Identifiers
DOI: 10.1016/j.atmosenv.2006.05.088
PMID: 32288553
PMCID: PMC7108307
Source
PubMed Central
Keywords
License
Unknown

Abstract

Understanding of aerosol dispersion characteristics has many scientific and engineering applications. It is recognized that Eulerian or Lagrangian approach has its own merits and limitations. A new Eulerian model has been developed and it adopts a simplified drift–flux methodology in which external forces can be incorporated straightforwardly. A new near-wall treatment is applied to take into account the anisotropic turbulence for the modified Lagrangian model. In the present work, we present and compare both Eulerian and Lagrangian models to simulate particle dispersion in a small chamber. Results reveal that the standard k – ε Lagrangian model over-predicts particle deposition compared to the present turbulence-corrected Lagrangian approach. Prediction by the Eulerian model agrees well with the modified Lagrangian model.

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