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Experimental study of the dispersion of cough-generated droplets from a person going up- or downstairs
Wang, Hongping1,2; Li, Zhaobin1,2; Liu, Yi1,2; Zhu, Lixing1,2; Zhou, Zhideng1,2
Source PublicationAIP ADVANCES
2022
Volume12Issue:1Pages:7
Abstract

The dispersion of cough-generated droplets from a person going up- or downstairs was investigated through a laboratory experiment in a water tunnel. This experiment was carried out with a manikin mounted at inclination angles facing the incoming flow to mimic a person going up or down. Detailed velocity measurements and flow visualization were conducted in the water tunnel experiments. To investigate the influence of the initial position on the motion of particles, a virtual particle approach was adopted to simulate the dispersion of particles using the measured velocity field. Particle clustering, which is caused by the unsteadiness of the flow, was observed in both flow visualization and virtual particle simulation. For the case of going upstairs, particles are concentrated below the person's shoulder and move downward with a short travel distance. For the case of going downstairs, particles dispersing over the person's head advect over for a long distance. We also found that the motion of the particles is closely related to the initial position. According to the results in this study, suggestions for the prevention of respiratory infectious disease are made.

DOI10.1063/5.0073880
Indexed BySCI
Language英语
WOS IDWOS:000744571000010
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding ProjectNSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[12072348]
Funding OrganizationNSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Natural Science Foundation of China
ClassificationQ3
Ranking1
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/88409
Collection非线性力学国家重点实验室
Corresponding AuthorWang, Hongping
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Hongping,Li, Zhaobin,Liu, Yi,et al. Experimental study of the dispersion of cough-generated droplets from a person going up- or downstairs[J]. AIP ADVANCES,2022,12,1,:7.
APA Wang, Hongping,Li, Zhaobin,Liu, Yi,Zhu, Lixing,&Zhou, Zhideng.(2022).Experimental study of the dispersion of cough-generated droplets from a person going up- or downstairs.AIP ADVANCES,12(1),7.
MLA Wang, Hongping,et al."Experimental study of the dispersion of cough-generated droplets from a person going up- or downstairs".AIP ADVANCES 12.1(2022):7.
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