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

D. Parienta; L. Morawska; G. R. Johnson; Z. D. Ristovski; M. Hargreaves; K. Mengersen; S. Corbett; C. Y.H. Chao; Y. Li; D. Katoshevski

doi:https://doi.org/10.1016/j.jaerosci.2010.10.005

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

D. Parienta, L. Morawska, G. R. Johnson, Z. D. Ristovski, M. Hargreaves, K. Mengersen, S. Corbett, C. Y.H. Chao, Y. Li, D. Katoshevski

The Academic Pilot Course Program

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	American English
Pages (from-to)	1-10
Number of pages	10
Journal	Journal of Aerosol Science
Volume	42
Issue number	1
DOIs	https://doi.org/10.1016/j.jaerosci.2010.10.005
State	Published - 1 Jan 2011

Keywords

Droplet dynamics
Modeling
Spray/aerosol

All Science Journal Classification (ASJC) codes

Environmental Engineering
Pollution
Mechanical Engineering
Fluid Flow and Transfer Processes
Atmospheric Science

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https://doi.org/10.1016/j.jaerosci.2010.10.005

Cite this

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abstract = "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.",

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AU - Parienta, D.

AU - Morawska, L.

AU - Johnson, G. R.

AU - Ristovski, Z. D.

AU - Hargreaves, M.

AU - Mengersen, K.

AU - Corbett, S.

AU - Chao, C. Y.H.

AU - Li, Y.

AU - Katoshevski, D.

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N2 - 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.

AB - 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.

KW - Droplet dynamics

KW - Modeling

KW - Spray/aerosol

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

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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