Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multi‐person movement‐induced airflow and the effects on virus‐laden expiratory droplet dispersion in indoor environments
The multi‐person movement might cause complex induced airflow and affect the virus‐laden expiratory droplet transmission in indoor environments. Using the dynamic mesh model in computational fluid dynamics, the multi‐person movement with different personnel location distributions was realized. The induced airflow patterns, virus‐laden droplet dispersion, and concentration distribution were investigated in detail. The results show that multi‐person movement might intensify inter‐regional convection, which has been rarely found in single‐person movement conditions. Side‐by‐side distribution and ladder distribution of moving persons could cause a connected low‐pressure area behind the moving persons, which might enhance lateral virus transport, especially where droplets might suspend at the height of the breathing zone. Not only 1–10 μm aerosols but also some 20–50 μm droplets are carried by the multi‐person movement‐induced airflow to over 3 m. Since the width of induced airflow is about 0.6–1.0 m, moving persons should keep enough horizontal distance (>1.0 m) to limit the air mixing and virus‐laden droplet transmission. This paper could provide a detailed reference for the numerical study of multi‐person movement‐induced airflow patterns, droplet dispersion, and indoor infection control.
Multi‐person movement‐induced airflow and the effects on virus‐laden expiratory droplet dispersion in indoor environments
The multi‐person movement might cause complex induced airflow and affect the virus‐laden expiratory droplet transmission in indoor environments. Using the dynamic mesh model in computational fluid dynamics, the multi‐person movement with different personnel location distributions was realized. The induced airflow patterns, virus‐laden droplet dispersion, and concentration distribution were investigated in detail. The results show that multi‐person movement might intensify inter‐regional convection, which has been rarely found in single‐person movement conditions. Side‐by‐side distribution and ladder distribution of moving persons could cause a connected low‐pressure area behind the moving persons, which might enhance lateral virus transport, especially where droplets might suspend at the height of the breathing zone. Not only 1–10 μm aerosols but also some 20–50 μm droplets are carried by the multi‐person movement‐induced airflow to over 3 m. Since the width of induced airflow is about 0.6–1.0 m, moving persons should keep enough horizontal distance (>1.0 m) to limit the air mixing and virus‐laden droplet transmission. This paper could provide a detailed reference for the numerical study of multi‐person movement‐induced airflow patterns, droplet dispersion, and indoor infection control.
Multi‐person movement‐induced airflow and the effects on virus‐laden expiratory droplet dispersion in indoor environments
Wu, Jialin (Autor:in) / Geng, Jing (Autor:in) / Fu, Ming (Autor:in) / Weng, Wenguo (Autor:in)
Indoor Air ; 32
01.09.2022
18 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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