While France is trying to stem the second wave of Covid-19, the wearing of a compulsory mask in all enclosed places is, according to Ansys, one of the most effective measures to curb the transmission of the virus.
Using Ansys' numerical simulation, researchers Yu Feng and Jianan Zhao of Oklahoma State University modeled the spread of saliva droplets when a person seated in an auditorium coughed. The results show that in the absence of a mask, the largest droplets are projected into the four rows of seats opposite. The small, more volatile particles can go even further and spread throughout the room, risking infecting other individuals despite respecting social distancing.
“ These cutting-edge in silico experiments, performed with Ansys software, have enabled us to assess and quantify the spread of saliva particles when we cough with and without a mask. Our expertise in calculating fluid and aerosol dynamics in the lungs helps us better understand exposure to droplets laden with Covid-19 in the air and improve advice and measures to reduce the risk of 'infection ,' says Yu Feng, assistant professor of chemical engineering at Oklahoma State University.
“Simulation is an effective solution to visualize the flow of air and the spread of tiny droplets expectorated by an infected person who is coughing or breathing heavily. The technology makes it possible to identify the places where particles can settle in order to minimize the risk of contamination , adds Thierry Marchal, general manager of health at Ansys. In this regard, the work of Dr Feng and Jianan Zhao is of paramount importance and proves that wearing a mask is an essential tool to limit the circulation of the virus. "
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