About: Modelling of evaporation of cough droplets in inhomogeneous humidity fields using the multi-component Eulerian-Lagrangian approach

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About: Modelling of evaporation of cough droplets in inhomogeneous humidity fields using the multi-component Eulerian-Lagrangian approach Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Modelling of evaporation of cough droplets in inhomogeneous humidity fields using the multi-component Eulerian-Lagrangian approach
Creator	Li, Xiangdong Shang, Yidan Tu, Jiyuan Yan, Yihuan Yang, Lin
Source	Elsevier; Medline; PMC
abstract	This study employed a multi-component Eulerian-Lagrangian approach to model the evaporation and dispersion of cough droplets in quiescent air. The approach is featured with a continuity equation being explicitly solved for water vapor, which allows comprehensively considering the effects of inhomogeneous humidity field on droplets evaporation and movement. The computational fluid dynamics (CFD) computations based on the approach achieved a satisfactory agreement with the theoretical models reported in the literature. The results demonstrated that the evaporation-generated vapor and super-saturated wet air exhaled from the respiratory tracks forms a “vapor plume” in front of the respiratory track opening, which, despite the short life time, significantly impedes the evaporation of the droplets captured in it. The study also revealed that due to the droplet size reduction induced by evaporation, both the number density of airborne droplets and mass concentration of inhalable pathogens remarkably increased, which can result in a higher risk of infection. Parametric studies were finally conducted to evaluate the factors affecting droplet evaporation. SUMMARY: The study demonstrated the importance of considering inhomogeneous humidity field when modelling the evaporation and dispersion of cough droplets. The multi-component Eulerian-Lagrangian model presented in this study provides a comprehensive approach to address different influential factors in a wide parametric range, which will enhance the assessment of the health risks associated with droplet exposure.
has issue date	2018-01-15(xsd:dateTime)
bibo:doi	10.1016/j.buildenv.2017.11.025
bibo:pmid	32287977
has license	no-cc
sha1sum (hex)	843bb93e398a21d5a2cf0121cdb846e5e372a2d4
schema:url	https://doi.org/10.1016/j.buildenv.2017.11.025
resource representing a document's title	Modelling of evaporation of cough droplets in inhomogeneous humidity fields using the multi-component Eulerian-Lagrangian approach
has PubMed Central identifier	PMC7117029
has PubMed identifier	32287977
schema:publication	Build Environ
resource representing a document's body	covid:843bb93e398a21d5a2cf0121cdb846e5e372a2d4#body_text
is schema:about of	named entity 'APPROACH' named entity 'MULTI' named entity 'INHOMOGENEOUS' named entity 'RANGE' named entity 'CONTINUITY EQUATION' named entity 'RESPIRATORY' named entity 'EVAPORATION' named entity 'TIME' named entity 'HEALTH' named entity 'MOVEMENT' named entity 'EXHALED' named entity 'SUPER' named entity 'RESULT' named entity 'AIR' named entity 'DROPLET' named entity 'THEORETICAL MODELS' named entity 'EMPLOYED' named entity 'OPENING' named entity 'COMPUTATIONAL FLUID DYNAMICS' named entity 'FORMS' named entity 'AIRBORNE' named entity 'STUDIES' named entity 'RESULTS' named entity 'ASSOCIATED WITH' named entity 'EXPOSURE' named entity 'SATISFACTORY' named entity 'DUE TO' named entity 'TRACK' named entity 'FRONT OF' named entity 'ENHANCE' named entity 'TRACKS' named entity 'RISKS' named entity 'MODELLING' named entity 'CONCENTRATION OF' named entity 'HUMIDITY' named entity 'FIELD' named entity 'LIFE' named entity 'ALLOWS' named entity 'WATER VAPOR' named entity 'SATURATED' named entity 'INFLUENTIAL' named entity 'HUMIDITY' named entity 'REVEALED' named entity 'PATHOGENS' named entity 'HIGHER' named entity 'REDUCTION' named entity 'LITERATURE' named entity 'GENERATED' named entity 'EVAPORATION' named entity 'MODELLING' named entity 'RISK OF INFECTION' named entity 'BEING' named entity 'SUMMARY' named entity 'WIDE' named entity 'NUMBER DENSITY' named entity 'PLUME' named entity 'INDUCED' named entity 'COMPREHENSIVE' named entity 'MODEL' named entity 'STUDY' named entity 'MULTI' named entity 'DEMONSTRATED' named entity 'COMPONENT' named entity 'LAGRANGIAN' named entity 'LAGRANGIAN' named entity 'COMPONENT' named entity 'AGREEMENT' named entity 'SIZE' named entity 'DIFFERENT' named entity 'MASS CONCENTRATION' named entity 'USING' named entity 'EFFECTS' named entity 'PRESENTED' named entity 'DISPERSION' named entity 'AFFECTING' named entity 'APPROACH' named entity 'EVALUATE'

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