Modelling Airborne Transmission and Ventilation Impacts of a COVID-19 Outbreak in a Restaurant in Guangzhou, China

Ho, Clifford K.

doi:10.1080/10618562.2021.1910678

Modelling Airborne Transmission and Ventilation Impacts of a COVID-19 Outbreak in a Restaurant in Guangzhou, China

Journal Article · Wed Apr 07 00:00:00 EDT 2021 · International Journal of Computational Fluid Dynamics

DOI:https://doi.org/10.1080/10618562.2021.1910678· OSTI ID:1778059

Ho, Clifford K. ^[1]

Sandia National Laboratories, Albuquerque, NM, USA

Computational fluid dynamics (CFD) modelling was performed to simulate spatial and temporal airborne pathogen concentrations during an observed COVID-19 outbreak in a restaurant in Guangzhou, China. The reported seating configuration, overlap durations, room ventilation, layout, and dimensions were modelled in the CFD simulations to determine relative exposures and probabilities of infection. Results showed that the trends in the simulated probabilities of infection were consistent with the observed rates of infection at each of the tables surrounding the index patient. Alternative configurations that investigated different boundary conditions and ventilation conditions were also simulated. Increasing the fresh-air percentage to 10%, 50%, and 100% of the supply air reduced the accumulated pathogen mass in the room by an average of ~30%, ~70%, and ~80%, respectively, over 73 min. Overall, the probability of infection was reduced by ~10%, 40%, and 50%, respectively.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000; NA0003525

OSTI ID:: 1778059

Report Number(s):: SAND2021-4019J; 695270

Journal Information:: International Journal of Computational Fluid Dynamics, Journal Name: International Journal of Computational Fluid Dynamics Journal Issue: 9 Vol. 35; ISSN 1061-8562

Publisher:: Taylor & FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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60 APPLIED LIFE SCIENCES
CFD
COVID-19
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airborne transmission
ventilation

Modelling Airborne Transmission and Ventilation Impacts of a COVID-19 Outbreak in a Restaurant in Guangzhou, China

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