Airflow patterns around two people conversing in typical situations, such as hair salons, medical exam rooms, and long-term care facilities. COVID-19 can spread from asymptomatic…
Posts published in “Fluid Mechanics”
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In Physics of Fluids, researchers report using advanced simulation methods to capture the complex flows that occur when the cold airflow from air conditioners interacts…
A computation shows air purifiers in elevators and other confined spaces can actually increase saliva droplet dispersal, spreading COVID-19. The positions of air inlets and…
In Physics of Fluids, researchers discuss their design of an open-faced helmet for patient use that is connected to a medical-grade air filtration pump from…
Researchers identify ultra-fast gas flows through atomic-scale apertures in 2D membrane and validate a century-old equation of fluid dynamics. Credit: N Hassani & M N-Amal,…
A plot showing how much the aerosol from a sneeze spreads in each direction. Credit: Daniel Bonn, University of Amsterdam A portable device can determine…
December 20, 2020. (Click image for high-resolution view.) On a clear day, the towering peaks on Fogo, Santa Antão, and São Nicolau stand out amid…
Pressure and particle motions with and without a mask. Credit: Jinxiang Xi A computer model deepens our understanding of airflow while wearing face masks, where…
Even though common mask materials block most of the droplets that spread the virus, that may not be enough at close distances. Simply wearing a…
The cough-generated droplets from a walking individual disperse differently in a narrow corridor and an open space. In narrow corridors, the droplets are concentrated in…
Understanding Dangerous Droplet Dynamics New fluid dynamics research reveals why social distancing alone doesn’t necessarily prevent infection indoors and how to detect COVID-19 super-spreaders. Researchers…
Face masks slow spread of COVID-19; types of masks, length of use matter. The use of face masks to help slow the spread of COVID-19…
Sneeze velocity for four different nose and mouth types is shown. A) is open nasal passage with teeth, B) is open nasal passage without teeth,…
Drops of honey on a hydrophobic surface. Credit: Aalto University In specially coated tubes, the more viscous a liquid is, the faster it flows. It’s…
(Click image for full view.) Although face shields block the initial forward motion of the jet, the expelled droplets move around the visor with relative…
Discrete particle distribution of urinal flushing. Credit: Ji-Xiang Wang Using a public restroom? Mask up! Think you don’t need to worry about COVID-19 while using…
Three consecutive frames from the high-speed camera as air is forced into the corn starch suspension. Abrupt shear thickening makes it fracture like a solid.…
Vortex caused by common annular flushing. Credit: J.-X. Wang Coronavirus could be transmitted through a long-lasting cloud of virus-containing aerosol droplets ejected from a flushing…
Fluids that heat or cool surfaces make a transition from a smooth flow to a mixing, turbulent flow. A new MIT analysis shows the importance…
Temporal evolution of the bubble within different fluids. Note the shape of the ejector jet after each bubble pinch off. Credit: Lokesh Rohilla Researchers zero…