Numerical Investigation of Bioaerosol Transport in a Compact Lavatory

Numerical Investigation of Bioaerosol Transport in a Compact Lavatory

The lavatory is a fertile area for the transmission of infectious disease through bioaerosols between its users. In this study, we built a generic compact lavatory model with a vacuum toilet, and computational fluid dynamics (CFD) is used to evaluate the effects of ventilation and user behaviors on...

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Veröffentlicht in:Buildings (Basel) 2021-11, Vol.11 (11), p.526
Hauptverfasser: Wan, Jingyuan, Wei, Jianjian, Lin, Yingtien, Zhang, Tengfei (Tim)
Format: Artikel
Sprache:eng
Schlagworte:
Aerosols
Air flow
Airborne microorganisms
Aircraft
Bioaerosols
compact lavatory
Computational fluid dynamics
Computer applications
Deposition
Diameters
Dilution
Disease transmission
fecal aerosol
Fluid dynamics
Heated water
Hydrodynamics
Infections
Infectious diseases
Mathematical models
Mechanical ventilation
Methods
particle deposition
Pathogens
Plumbing fixtures
respiratory droplet
thermal plume
Thermal plumes
Toilet facilities
Turbulence models
Velocity
Ventilation
Viral infections
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Zusammenfassung:The lavatory is a fertile area for the transmission of infectious disease through bioaerosols between its users. In this study, we built a generic compact lavatory model with a vacuum toilet, and computational fluid dynamics (CFD) is used to evaluate the effects of ventilation and user behaviors on the airflow patterns, and the resulting fates of bioaerosols. Fecal aerosols are readily released into the lavatory during toilet flush. Their concentration rapidly decays in the first 20 s after flushing by deposition or dilution. It takes about 315 s to 348 s for fine bioaerosols (
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings11110526