New high-speed videos show that side-by-side droplets in a fast airflow fragment in predictable ways: they form sacs, stretch into threads, or even merge depending on their spacing.

A phase diagram captures these transitions.

🔗 https://journals.aps.org/prfluids/abstract/10.1103/5398-z2gf

#FluidDynamics #DropletPhysics #HighSpeedImaging #Atomization #SprayScience

Predicting Droplet Sizes

Squeeze a bottle of cleaning spray, and the nozzle transforms a liquid jet into a spray of droplets. These droplets come in many sizes, and predicting them is difficult because the droplets’ size distribution depends on the details of how their parent liquid broke up. Shown above is a simplified experimental version of this, beginning with a jet of air striking a spherical water droplet on the far left. In less than 3 milliseconds, the droplet has flattened into a pancake shape. In another 4 milliseconds, the pancake has ballooned into a shape called a bag, made up of a thin, curved water sheet surrounded by a thicker rim. A mere 10 milliseconds after the jet and drop first meet, the liquid is now a spray of smaller droplets.

Researchers have found that the sizes of these final droplets depend on the balance between the airflow and the drop’s surface tension; these two factors determine how the drop breaks up, whether that’s rim first, bag first, or due to a collision between the bag and rim. (Image credit: I. Jackiw et al.; via APS Physics)

#atomization #bag #droplets #flowVisualization #fluidDynamics #physics #science #sprays #surfaceTension

Happy to announce that our crazy CalmBot is now not only live on Revolt but on Telegram as well. It's most prominent feature is the timer functionality. More commands and functions will follow. Suggestions are always welcome. Read the help file here: https://telegra.ph/CalmBot-Documentation-05-18.

#bot #CalmBot #CosmicNation #Telegram #Revolt #Timer #Atomization

The tear in the fabric of the world is the division sown between people. The #individualization, the #atomization, the #racialization, have all played a part in this #dehumanization process.

Whenever I have shared my story, of being the son of an immigrant and a refugee, whatever the race or political leanings, I have found #human connection in sharing it. Human #connection is established when we share our #stories .
#TearInTheFabricOfTheWorld