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Simulation studies show that the cough drops can fly more than six feet away



During the coronavirus pandemic, the spread of cough drops has become of great interest to scientists. The new study, published Tuesday in the journal Physics of Fluids, measures the risk of transmitting the virus through airborne cough droplets under different outdoor tropical environments.

“Young children may be at higher risk than adults based on a typical downward cough trajectory. Young teenagers and short adults should maintain a social distance from those taller than 2 meters,” Research written in research. “Surgical masks are known to be effective at trapping large water droplets and are therefore recommended for use when needed.”

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Researchers – from the Singapore Agency for Science, Technology and Research – used digital models to simulate the trajectories of droplets released by a person suddenly coughing outdoors when someone nearby was shot. .

The researchers ran simulations with different droplet sizes, air temperature, relative humidity, wind speed, and different distance between speaker and listener.

This study shows that at a wind speed of 2 meters per second – equivalent to about 4 miles per hour – the travel distance for drops around the sizes of 100 micrometres and 1,000 micrometres can reach 21.6 feet and 4. feet, respectively, at 86 degrees Fahrenheit.

For a drop of 100 micrometres, the researchers found that the travel distance increased from about 3 feet without wind to about 22 feet with wind speeds of about 6.7 miles per hour.

The study has a number of limitations, including simulation-based results – not actual experiments – and the effect of ambient temperature and humidity on coronavirus viability is still unclear.

This isn’t the first time a model has suggested that a cough can travel more than 6 feet. In May, a separate study out of Cyprus also published in the journal Liquid Physics found that a gentle breeze can carry some drops as far as 18 feet.

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