A*STAR simulates how droplets fly when a Covid-19 patient coughs without a mask

A*STAR research has shown scientific proof that it is very important to wear a mask, practice good personal hygiene and social distancing.

A research study was done on the spread of cough droplets, taking into account factors such as the tropical climate here. 

Dr Lim Keng Hui, the institute's executive director said: ""The transport of droplets in a tropical climate will be quite different from a temperate climate, which would be drier."

Hence, in Singapore's humid climate, large cough droplets will evaporate partially, leaving behind a smaller droplet - which can then be carried even further by the wind.

The image shows detailed airflow patterns in the presence of objects, in this case, two persons. Recirculating flows, namely, wakes, are observed both in the front of the cougher and at the back of the listener. GRAPHIC: A*STAR


The researchers added that in their present simulation, Singapore's safe management measures are effective in mitigating the risk of Covid-19 spread.

Dr Lim said: "Our research has shown scientific proof that it is very important to wear a mask, practice good personal hygiene, social distancing, and ensure the environment is well ventilated, as all these things help to collectively lower the risk of transmission."


View the full article here:

The Straits Times

Goh, T., 2020. A*Star Researchers Simulate How Droplets Fly When A Covid-19 Patient Coughs Without A Mask. [online] The Straits Times. Available at: <https://www.straitstimes.com/singapore/health/astar-researchers-simulate-how-droplets-fly-when-a-covid-19-person-coughs-without-a?utm_medium=Social&utm_campaign=STFB&utm_source=Facebook&fbclid=IwAR3hK5RXSotqnITp8uwTSSTS-B26iFQSCogbMijFqFW78WfK8KKLgDt-wTQ#Echobox=1604879500> [Accessed 9 November 2020].