#droplet ejection

[fuckyeahfluiddynamics]

Shaped Splashes

When a raindrop hits a leaf, it spreads out into a rimmed sheet that breaks up into droplets. These tiny drops can carry dust, spores, and even pathogens as they fly off. But many leaves aren't smooth-edged; instead they have serrations or teeth. How does that affect a splash?  (Image and research credit: T. Bauer and T. Gilet) Read the full article

[fuckyeahfluiddynamics]

How Large Particles Get in Sea Spray

When bubbles burst at the ocean's surface, they eject droplets that can carry high concentrations of contaminants like pollutants, viruses, and microplastics. Previous theories posited that only particles smaller than the microlayer surrounding the bubble could make their way into these drops, but new work shows otherwise. (Image, video, and research credit: L. Dubitsky et al.; via APS Physics)

[fuckyeahfluiddynamics]

Aerated Faucets

So much goes on in our daily lives that we never see. But with the power of the smartphones in our pockets, we can catch more than ever before, as illustrated in this video. (Image and video credit: M. Mungal)

[fuckyeahfluiddynamics]

Senko-hanabi are a Japanese firework, somewhat similar to a sparkler. But instead of being driven by burning powder, the senko-hanabi's sparks come from bursting liquid droplets. (Image and research credit: C. Inoue et al. and C. Inoue et al.; video credit: NightHawkInLight; submitted by Jason C.)

[fuckyeahfluiddynamics]

I have to say I'm grateful that my classmates in school never discovered the mess-generating superpower of felt-tipped markers. (Image and video credit: The Slow Mo Guys)

[fuckyeahfluiddynamics]

Droplets From Jets

On the ocean, countless crashing waves are creating bubbles. When they burst, those bubbles generate jets and droplets that spray into the sky, carrying sea salt, dust, and biological material into the atmosphere. (Image credit: C. Couto; research credit: A. Berny et al.) Read the full article

[fuckyeahfluiddynamics]

Capturing refracted images in a droplet is a popular pastime among high-speed photographers, and in this solo Slow Mo Guy outing, we get to see that process in video. (Image and video credit: The Slow Mo Guys)

[fuckyeahfluiddynamics]

Today, let's take a look at the fluid dynamics of disease transmission, an important aspect of the current coronavirus pandemic. (Video credit: TEDMED; image credit: Bourouiba Research Group, source; research credit: L. Bourouiba et al., see also S. Poulain and L. Bourouiba, pdf)