#viscous flow

[fuckyeahfluiddynamics]

Fluids Can Fracture

Fracture is a sudden, brittle breaking-apart that we generally associate with solid materials that get stressed too far. Some viscoelastic, non-Newtonian fluids have been known to fracture, but that was generally thought to be unusual. But a recent study turns that idea on its head, revealing that even simple, albeit highly viscous, liquids can fracture. (Image, video, and research credit: T. Lima et al.; via Gizmodo)

[fuckyeahfluiddynamics]

Liquid Pulleys and Gears

In mechanical systems, gears and pulleys transmit rotation from one location to another. Here, researchers explore a fluid dynamical version of such systems. (Image credit: J. Smith et al.)

[fuckyeahfluiddynamics]

Setting the Stripes on a Tiger (Cake)

A tiger skin cake forms a distinctive pattern of light and dark patches as it bakes.  (Image credit: K. Koutova et al.)

[fuckyeahfluiddynamics]

Venusian Gravity Currents

Radar measurements of Venus's surface reveal the remains of many volcanic eruptions. One type of feature, known as a pancake dome, has a very flat top and steep sides; one dome, Narina Tholus, is over 140 kilometers wide. Since their discovery, scientists have been puzzling out how such domes could form. A recent study suggests that the Venusian surface's elasticity plays a role. (Image credit: NASA; research credit: M. Borelli et al.; via Gizmodo) Read the full article

[fuckyeahfluiddynamics]

"Droplet on a Plucked Wire"

What happens to a droplet hanging on a wire when the wire gets plucked? That's the fundamental question behind this video, which shows the effects of wire speed, viscosity, and viscoelasticity on a drop's detachment.  (Video and image credit: D. Maity et al.) Read the full article

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Bigger Particles Slide Farther

Mudslides and avalanches typically carry debris of many shapes and sizes. To understand how debris size affects flows like these, researchers use simplified, laboratory-scale experiments like this one.  (Video and image credit: S. Burnett et al.) Read the full article

[fuckyeahfluiddynamics]

Swimming With Cilia

Like most microswimmers, these Synura uvella algae use cilia to swim. Cilia are tiny, hair-like appendages that flap to produce thrust. Even under a microscope, the cilia are hard to see because they are so thin and move quickly in and out of the microscope's narrow focus.  (Video and image credit: L. Cesteros; via Nikon Small World in Motion) Read the full article

[fuckyeahfluiddynamics]

"Emitter"

For this latest experimental film, artist Roman De Giuli provides a glimpse of the unique fluid art machine he's built over the last 3.5 years.  (Image and video credit: R. De Giuli) Read the full article