Effects of space sizes on the dispersion of cough-generated droplets from a walking person.
Effects of space sizes on the dispersion of cough-generated droplets from a walking person.
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DOI:
10.1063/5.0034874
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发表时间:
2020-12-01
期刊:
影响因子:
--
通讯作者:
Yang X
中科院分区:
文献类型:
--
作者:
Li Z;Wang H;Zhang X;Wu T;Yang X
The dispersion of viral droplets plays a key role in the transmission of COVID-19. In this work, we analyze the dispersion of cough-generated droplets in the wake of a walking person for different space sizes. The air flow is simulated by solving the Reynolds-averaged Navier–Stokes equations, and the droplets are modeled as passive Lagrangian particles. Simulation results show that the cloud of droplets locates around and below the waist height of the manikin after 2 s from coughing, which indicates that kids walking behind an infectious patient are exposed to higher transmission risk than adults. More importantly, two distinct droplet dispersion modes occupying significantly different contamination regions are discovered. A slight change of space size is found being able to trigger the transition of dispersion modes even though the flow patterns are still similar. This shows the importance of accurately simulating the air flow in predicting the dispersion of viral droplets and implies the necessity to set different safe-distancing guidelines for different environments.
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影响因子:
3.7
作者:
Bourouiba, Lydia;Dehandschoewercker, Eline;Bush, John W. M.
通讯作者:
Bush, John W. M.
DOI:
10.1007/bf00936835
发表时间:
1994-06-01
期刊:
APPLIED SCIENTIFIC RESEARCH
影响因子:
--
作者:
ELGHOBASHI, S
通讯作者:
ELGHOBASHI, S
DOI:
10.1063/5.0022859
发表时间:
2020-09-01
期刊:
Physics of fluids (Woodbury, N.Y. : 1994)
影响因子:
--
作者:
Das SK;Alam JE;Plumari S;Greco V
通讯作者:
Greco V
影响因子:
4.6
作者:
Dbouk, Talib;Drikakis, Dimitris
通讯作者:
Drikakis, Dimitris
DOI:
10.1063/5.0029118
发表时间:
2020-10-01
期刊:
Physics of fluids (Woodbury, N.Y. : 1994)
影响因子:
--
作者:
Abuhegazy M;Talaat K;Anderoglu O;Poroseva SV
通讯作者:
Poroseva SV