Theoretical analysis of the motion and evaporation of exhaled respiratory droplets of mixed composition

被引：73

作者：

Parienta, D. ^{[1
]}

Morawska, L. ^{[2
]}

Johnson, G. R. ^{[2
]}

Ristovski, Z. D. ^{[2
]}

Hargreaves, M. ^{[2
]}

Mengersen, K. ^{[2
]}

Corbett, S. ^{[3
]}

Chao, C. Y. H. ^{[4
]}

Li, Y. ^{[5
]}

Katoshevski, D. ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Biotechnol & Environm Engn, IL-84105 Beer Sheva, Israel

[2] Queensland Univ Technol, Brisbane, Qld 4001, Australia

[3] Western Sydney Area Hlth Serv, Ctr Publ Hlth, Sydney, NSW, Australia

[4] Hong Kong Univ Sci & Technol, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China

[5] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China

来源：

JOURNAL OF AEROSOL SCIENCE | 2011年 / 42卷 / 01期

关键词：

Droplet dynamics; Modeling; Spray/aerosol; AIRBORNE INFECTION; AIR;

D O I：

10.1016/j.jaerosci.2010.10.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The dynamics of droplets exhaled from the respiratory system during coughing or talking is addressed. A mathematical model is presented accounting for the motion of a droplet in conjunction with its evaporation. Droplet evaporation and motion are accounted for under two scenarios: (1) a well mixed droplet and (2) a droplet with inner composition variation. A multiple shells model was implemented to account for internal mass and heat transfer and for concentration and temperature gradients inside the droplet. The trajectories of the droplets are computed for a range of conditions and the spatial distribution and residence times of such droplets are evaluated. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1 / 10

页数：10

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