Journal
ATMOSPHERIC ENVIRONMENT
Volume 41, Issue 25, Pages 5249-5256Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2006.05.088
Keywords
dispersion; mixing; particulate matter; indoor air quality
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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 nearwall 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-r. 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. (c) 2007 Published by Elsevier Ltd.
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