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- W3083712819 endingPage "103439" @default.
- W3083712819 startingPage "103439" @default.
- W3083712819 abstract "The COVID-19 pandemic has strikingly demonstrated how important it is to develop fundamental knowledge related to the generation, transport and inhalation of pathogen-laden droplets and their subsequent possible fate as airborne particles, or aerosols, in the context of human to human transmission. It is also increasingly clear that airborne transmission is an important contributor to rapid spreading of the disease. In this paper, we discuss the processes of droplet generation by exhalation, their potential transformation into airborne particles by evaporation, transport over long distances by the exhaled puff and by ambient air turbulence, and their final inhalation by the receiving host as interconnected multiphase flow processes. A simple model for the time evolution of droplet/aerosol concentration is presented based on a theoretical analysis of the relevant physical processes. The modeling framework along with detailed experiments and simulations can be used to study a wide variety of scenarios involving breathing, talking, coughing and sneezing and in a number of environmental conditions, as humid or dry atmosphere, confined or open environment. Although a number of questions remain open on the physics of evaporation and coupling with persistence of the virus, it is clear that with a more reliable understanding of the underlying flow physics of virus transmission one can set the foundation for an improved methodology in designing case-specific social distancing and infection control guidelines." @default.
- W3083712819 created "2020-09-11" @default.
- W3083712819 creator A5017981929 @default.
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- W3083712819 creator A5031241305 @default.
- W3083712819 creator A5033110950 @default.
- W3083712819 creator A5035789002 @default.
- W3083712819 date "2020-11-01" @default.
- W3083712819 modified "2023-10-10" @default.
- W3083712819 title "Host-to-host airborne transmission as a multiphase flow problem for science-based social distance guidelines" @default.
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