Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20439
Title: Numerical simulation of virus diffusion in facemask during breathing cycles
Authors: Li, Y 
Li, F
Qingyong, Z
Keywords: Breathing cycles
Filtration
Mask
Virus transfer
Issue Date: 2005
Publisher: Pergamon Press
Source: International journal of heat and mass transfer, 2005, v. 48, no. 19-20, p. 4229-4242 How to cite?
Journal: International journal of heat and mass transfer 
Abstract: The recent SARS outbreak has spawned a major controversy concerning the protective performance of facemasks. The objective of this paper is to establish a mathematical model for describing the mechanism of viruses diffusion in a facemask during breathing cycles. In this model the mechanisms of the water vapor molecular diffusion, evaporation/condensation, sorption/desorption of moisture by fibers, Brownian diffusion of the virus, filtration of virus, capillary penetration of the viruses with the liquid water and latent heat generation due to phase change are considered. Meanwhile, the theoretical predictions are compared with experimental data, and good agreement is observed between the two, indicating that the model is satisfactory. Also, the effects of structural and materials properties on virus transfer are investigated.
URI: http://hdl.handle.net/10397/20439
ISSN: 0017-9310
EISSN: 1879-2189
DOI: 10.1016/j.ijheatmasstransfer.2005.03.030
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