We know Driving down the window Bad for you In terms of driving in a highly polluted place, but a new study from Brown University suggests that driving with windows can greatly increase your chances. Covid-19 If you are sharing a car with someone infected.
The researchers used computer models to dissolve airflow and aerosols in the cabin of a compact car between two masculine people, a rider and a driver. To Science Tech:
The study, conducted by a team of researchers at Brown University, used a computer model to simulate airflow inside a compact car with different combinations of windows open or closed. These simulations showed that open windows – the more windows the better – created an airflow pattern that dramatically reduced the concentration of airborne particles changing between the driver and the same passenger. The researchers found that blasting the car’s ventilation system did not allow air to circulate in the slightly open window.
Asimanshu Das, a graduate student at Brown’s School of Engineering and co-lead author of the research, said, “Driving on Windows and keeping the air conditioning or heat on is definitely the worst case scenario,” said Asimanshu Das The author, Asimanshu Das said. “The best scenario we got was to have all four windows open, but keeping one or two open was a lot better than keeping them all closed.”
To accommodate the passengers, the researchers also arranged for a driver and passenger on opposite sides of the cabin (approximately the size of a Toyota Prius spec). The maximum distance, which is less than 6 feet, recommended by disease control centers. They emulated a car traveling at 50 miles per hour, Both the driver and the passengers usually with breathing. It seems common sense that driving with all windows would cut the spread of the virus, but the science behind the models is still interesting. Again by Psychtech Daily:
One of the reasons why it is better to open the windows in terms of aerosol transmission is because it increases the number of air changes in hours (ACH) inside the car, which helps reduce the overall concentration of aerosols. But Ach was part of the story, the researchers say. Studies have shown that different combinations of open windows create different air currents inside the car that can increase or decrease exposure to the remaining aerosols.
The way air flows out of the car causes the air pressure near the rear windows to be higher than the pressure on the front windows. As a result, air enters the car through the rear windows and exits through the front windows. With all the windows open, this tendency creates two-more-less independent currents on either side of the cabin. The occupants in the simulations sat on opposite sides of the cabin, so very few particles are transferred between the two. This scenario carries a slightly greater risk to the driver than the passenger as the average airflow in the car moves backwards and forwards, but both vehicle transactions experience dramatically less transfer of particles than in other scenes.
Simulations for scenarios in which some but not all windows are down have some potentially counterproductive results. For example, one might expect that opening windows directly next to each business would be the easiest way to reduce exposure. These simulations found that the configuration is better than the windows down, it has a higher exposure risk than placing a window against each other.
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Naturally, winter is now very seasonal Of the country, which is partly why we are seeing a huge spike in cases CNN. People are gathering Do not change their behavior to limit the spread of COVID-19, while in closed spaces for the holidays. The researchers also said that no model with two muscleless occupants could completely eliminate the risk of infection. Honestly, it’s best to completely avoid following a cool, wind-blown car ride CDC’s Covid-19 Guide And staying at home.
Not enough Americans are taking that advice to heart. According to this writing, the United States is close to 200,000 Kovid-19 cases a day, according to CNN. The current mortality from COVID-19 is over 282,310.
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