COVID-19 Virus Spread
The inflow is above the window. The sneezing parameters (velocity, temperature, particle velocity, particle distribution, . . . ) were taken from experimentally measured data. Notice that the larger droplets (red color) fall quickly, but the smaller ones (blue color – logarithmic scale for the diameter !) stay on for a long time. The doctor/nurse is being surrounded on all sides by the virus. Furthermore, the virus exits the door into the corridor. This simple example clearly shows the imperative need for monitoring and improving the flow of air in hospitals
Reduced order modeling
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