Evaluation Of SARS-COV-2 Transmission And Infection In Airliner Cabins

In the global pandemic of the COVID-19,commercial airliners have played an important role.They have turned a local epidemic disease into a global pandemic.In order to reduce the exposure risk of passengers on the plane,and help the global epidemic prevention and control.This article is based on two typical flights with COVID-19 transmission: flight VN54 from London to Hanoi and flight TR188 from Singapore to Hangzhou.The CFD method was used to study the spread and infection process of SARS-Co V-2 laden droplets in the two flights.In this research,the fullsize droplet generated by coughing,breathing and talking activities,and the number of virus copies of different sizes droplets were first determined.And then,simulating the droplets to be exhaled,transmit and be inhaled using the Lagrangian method,and counting the number of virus copies inhaled by passengers.Finally,the dose-response model was used to compare the number of virus copies inhaled by the passenger with the tolerable dose to determine the infection of each passenger.According to the results,the inhaled virus carried by droplet nuclei smaller 10μm accounted for more than 99% of the total amount of virus inhaled,and smaller 5μm accounted for 68%,which fully showed that the importance of aerosol transmission in the spread of the SARS-Co V-2 in aircraft.In addition,through this study,it can be found that wearing masks and reducing conversation durations between passengers can reduce the risk of infection of passengers,which is conducive to epidemic prevention and control.In the case of VN54,because of having more sufficient passenger information,our method correctly predicted 84.2% of the infected/uninfected cases,which means that with sufficient index passenger information,a accurate prediction of the infection of fellow passengers can be made.