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7491400 
Journal Article 
Modelling Airborne Transmission and Ventilation Impacts of a COVID-19 Outbreak in a Restaurant in Guangzhou, China 
Ho, CK 
2021 
Yes 
International Journal of Computational Fluid Dynamics
ISSN: 1061-8562
EISSN: 1029-0257 
1-19 
WOS:000637616500001 
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 similar to 30%, similar to 70%, and similar to 80%, respectively, over 73 min. The probability of infection was reduced by similar to 10%, 40%, and 50%, respectively. 
CFD; Guangzhou restaurant; COVID-19; SARS-CoV-2; ventilation; airborne transmission