Experimental measurements and large eddy simulation of expiratory droplet dispersion in a mechanically ventilated enclosure with thermal effects

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)371-379
Journal / PublicationBuilding and Environment
Volume45
Issue number2
Publication statusPublished - Feb 2010

Abstract

Understanding of droplet transport in indoor environments with thermal effects is very important to comprehend the airborne pathogen infection through expiratory droplets. In this work, a well-resolved Large Eddy Simulation (LES) was performed to compute the concentration profiles of monodisperse aerosols in non-isothermal low-Reynolds turbulent flow taking place in an enclosed environment. Good care was taken to ensure that the main dynamical features of the continuous phase were captured by the present LES. The particle phase was studied in both Lagrangian and Eulerian frameworks. Steady temperature and velocity were measured prior to droplet emission. Evolution of aerosol concentration was measured by a particle counter. Results of the present LES were to compare reasonably well with the experimental findings for both phases. © 2009 Elsevier Ltd. All rights reserved.

Research Area(s)

  • CFD, Displacement ventilation, Experimental setup, Expiratory droplets, Large eddy simulation

Citation Format(s)

Experimental measurements and large eddy simulation of expiratory droplet dispersion in a mechanically ventilated enclosure with thermal effects. / Berrouk, Abdallah S.; Lai, Alvin C.K.; Cheung, Albert C.T. et al.
In: Building and Environment, Vol. 45, No. 2, 02.2010, p. 371-379.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review