#turbulence — Public Fediverse posts

💁🏻‍♀️ TIL: 🧠🐝 A University of #Colorado #Boulder team studied how #turbulence transforms odor signals as they travel.

Using #wind tunnels, #lasers, and real-world plume measurements, they identified three ways airflow filters, spreads, and generates odor frequencies. They argue these systematic changes encode distance and direction information #animals use for olfactory #navigation.

👉 https://phys.org/news/2026-08-decoding-reveals-odor.html

#science #smell #olfaction #bees #neuroscience #physics #cuboulder #research #biology

💁🏻‍♀️ TIL: 🧠🐝 A University of #Colorado #Boulder team studied how #turbulence transforms odor signals as they travel.

Using #wind tunnels, #lasers, and real-world plume measurements, they identified three ways airflow filters, spreads, and generates odor frequencies. They argue these systematic changes encode distance and direction information #animals use for olfactory #navigation.

👉 https://phys.org/news/2026-08-decoding-reveals-odor.html

#science #smell #olfaction #bees #neuroscience #physics #cuboulder #research #biology

@Umbertogaetani Their simulations suggest that #water rising through narrow dykes would freeze too quickly to supply the volumes needed for features such as chaos terrain, pits, domes or ridges. #Turbulence makes this worse by enhancing heat loss, supercooling the water, producing frazil ice, and clogging the dyke.

If correct, shallow liquid reservoirs on #Europa may form more by local in situ melting than by direct #ocean-to-surface exchange.

#PlanetaryScience #SpacePhysics #IcyMoons

@Umbertogaetani Their simulations suggest that #water rising through narrow dykes would freeze too quickly to supply the volumes needed for features such as chaos terrain, pits, domes or ridges. #Turbulence makes this worse by enhancing heat loss, supercooling the water, producing frazil ice, and clogging the dyke.

If correct, shallow liquid reservoirs on #Europa may form more by local in situ melting than by direct #ocean-to-surface exchange.

#PlanetaryScience #SpacePhysics #IcyMoons

16. More #turbulence on the head of water jets in #Bilbao

16. More #turbulence on the head of water jets in #Bilbao

15. More #turbulence in the final breakup region of a water jet (continuation of https://mastodon.social/@franco_vazza/117041895435535770)

15. More #turbulence in the final breakup region of a water jet (continuation of https://mastodon.social/@franco_vazza/117041895435535770)

Thanks to the world's most powerful solar telescope, scientists have captured the solar surface in unprecedented detail and captured photos and videos of solar plasma vortices. These images were obtained using the Inouye Telescope, the world's largest solar telescope, located atop a mountain in Hawaii. Ubiquitous magnetized Kelvin-Helmholtz instabilities at the edges of magnetic flux concentrations, long predicted theoretically, have been discovered.

https://www.nature.com/articles/s41586-026-10871-3

#astronomy #sun #turbulence #physics #solar_dynamics #solar_activity

Thanks to the world's most powerful solar telescope, scientists have captured the solar surface in unprecedented detail and captured photos and videos of solar plasma vortices. These images were obtained using the Inouye Telescope, the world's largest solar telescope, located atop a mountain in Hawaii. Ubiquitous magnetized Kelvin-Helmholtz instabilities at the edges of magnetic flux concentrations, long predicted theoretically, have been discovered.

https://www.nature.com/articles/s41586-026-10871-3

#astronomy #sun #turbulence #physics #solar_dynamics #solar_activity

Weekly Update from the Open Journal of Astrophysics 08/08/2026

Althouygh it’s holiday season for some, it’s time once more for another Saturday update of activity at the Open Journal of Astrophysics. Since the last update we have published a further for papers, bringing the number in Volume 9 (2026) to 167 and the total so far published by OJAp up to 615.

I continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week was published on Tuesday 4th August in the folder Astrophysics of Galaxies with the title “Small-scale turbulence alongside large-scale turbulence in a z=1.87 star-forming galaxy with an outflowing wind, revealed by multi-point structure functions” by Itzhak Goldman (Afeka College, Israel). A previous study by the author found evidence of large and small scale turbulence in the star-forming galaxy CSWA13, suggesting that star clusters and large clumps within the galaxy could be driving this turbulence.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/117036181269903989

The second paper for this week, published on Thursday 6th August in the folder Astrophysics of Galaxies, is “From Clumps to Sheets: Geometry Controls the Temperature PDF of Multi-Phase Gas” by Zirui Chen and S. Peng Oh (UC Santa Barbara, USA). This study uses 3D hydrodynamic simulations to show that the temperature probability distribution functions (PDFs) of multi-phase turbulent gas differ significantly under interstellar medium (ISM) and circumgalactic medium (CGM) conditions.

The overlay looks like this:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/117047322340826393

The third paper of the week, published on Thursday 6th August in folder Instrumentation and Methods for Astrophysics is “First Detection of Extensive Air Showers Using a Small-Aperture Fluorescence Telescope” by M. Zotov (M.V. Lomonosov Moscow State University, Russia) and 7 others based in Russia and Armenia. The study reports the first-ever detection of extensive air showers from ultra-high-energy cosmic rays using a compact fluorescence telescope, employing both conventional and deep learning analysis methods.

The overlay is here:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/117047408583672745

The fourth and final paper of the week was published on Friday 7th August in the folder Cosmology and Nongalactic Astrophysics: “TDCOSMO XXVI: Uniform Lens Modeling of Eight Doubly Imaged Quasars“, by Ryan Brady (Stony Brook University, USA) and 9 others based all around the world, presents a new method for analyzing doubly imaged quasars using the Hubble Space Telescope, revealing that arc surface brightness is key to precision in mass model measurements.

The overlay is here:

The officially-accepted version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/117053056092162466

That’s all for this week. We have about a dozen more papers accepted and waiting for the authors to put the final version on arXiv, which they will presumably do when they’re back from holiday. I’ll do an update next weekend and we’ll see!

This is the exciting part: #KHI can mix magnetized and non-magnetized #plasma, drive #turbulence, transport mass/energy/momentum/ #MagneticFlux, and may contribute to small-scale #magnetic braiding, thus one route by which free #MagneticEnergy is built up in the solar #atmosphere.

That makes them relevant to the long-standing puzzle of why the #corona is heated to millions of kelvin while the visible surface is only ~5,800 K. 😎🔥

#SolarPhysics #PlasmaPhysics #SpacePhysics #KHI

This is the exciting part: #KHI can mix magnetized and non-magnetized #plasma, drive #turbulence, transport mass/energy/momentum/ #MagneticFlux, and may contribute to small-scale #magnetic braiding, thus one route by which free #MagneticEnergy is built up in the solar #atmosphere.

That makes them relevant to the long-standing puzzle of why the #corona is heated to millions of kelvin while the visible surface is only ~5,800 K. 😎🔥

#SolarPhysics #PlasmaPhysics #SpacePhysics #KHI

Speaking of #turbulence (https://mastodon.social/@franco_vazza/117041895435535770) here is instead the simulated version of it, for the plasma conditions of the hot x-ray halo of the Milky Way (about one million degrees Kelvin)

This shows the possibile outcome of stationary driven turbulence in a small portion of it, using supersonic forcing in the ENZO code #astrophysics #physics #science

Speaking of #turbulence (https://mastodon.social/@franco_vazza/117041895435535770) here is instead the simulated version of it, for the plasma conditions of the hot x-ray halo of the Milky Way (about one million degrees Kelvin)

This shows the possibile outcome of stationary driven turbulence in a small portion of it, using supersonic forcing in the ENZO code #astrophysics #physics #science

Air India says severe turbulence lasted nearly five minutes, leaving cabin crew with spinal injuries. DGCA is analysing the flight recorders. https://english.mathrubhumi.com/news/india/air-india-turbulence-5-minutes-spinal-injuries-crew-j0fexe6p?utm_source=dlvr.it&utm_medium=mastodon #AirIndia #Turbulence #Aviation #DGCA #FlightSafety

#Turbulence is probably the complex emergent phenomenon we can observe in a more iniquitous way, at all scales, epochs and in all environments. It is also continuously around us on Earth, although we don't often pay attention to it - and sometimes it is just a nuisance.

Here a short parade of turbulence I randomly recorded (or generated) around me in these latest years

1. Droplets of coffee in milk

#physics #science #fluids

#Turbulence is probably the complex emergent phenomenon we can observe in a more iniquitous way, at all scales, epochs and in all environments. It is also continuously around us on Earth, although we don't often pay attention to it - and sometimes it is just a nuisance.

Here a short parade of turbulence I randomly recorded (or generated) around me in these latest years

1. Droplets of coffee in milk

#physics #science #fluids

Air India Phuket-Delhi flight rocked by mid-flight turbulence; minor injuries reported https://english.mathrubhumi.com/news/india/air-india-flight-ai2379-turbulence-phuket-delhi-x0b1vu9d?utm_source=dlvr.it&utm_medium=mastodon #AirIndia #FlightAI2379 #Turbulence #AviationNews #Delhi

🌪️ Turbulence: The Greatest Unsolved Problem in Classical Physics

Despite centuries of research, turbulence remains one of the deepest mysteries in physics. From the chaotic wake behind an aircraft to swirling hurricanes, ocean currents, combustion, blood flow, and even the birth of stars, turbulent motion is everywhere, yet predicting it precisely remains extraordinarily difficult.

This challenge has fascinated some of history's greatest scientific minds. Horace Lamb famously remarked that, upon reaching heaven, he hoped to finally understand quantum electrodynamics and turbulence, adding that he was "rather optimistic" about the former. Richard Feynman likewise described turbulence as one of the most important unsolved problems in classical physics. A quote often attributed to Werner Heisenberg expresses a similar sentiment, although its authenticity remains uncertain.

The difficulty lies in turbulence's nonlinear nature: tiny changes can produce dramatically different outcomes, with countless interacting vortices spanning an enormous range of scales. While the Navier–Stokes equations describe fluid motion, obtaining complete analytical solutions for turbulent flows remains one of the greatest challenges in physics, mathematics, and computational science.

Understanding turbulence isn't merely an academic pursuit, it has profound implications for aviation, climate modelling, renewable energy, engineering, astrophysics, medicine, and space exploration. Every advance brings us closer to more efficient aircraft, more accurate weather forecasts, cleaner energy systems, and deeper insights into the natural world.

Sometimes, the most familiar phenomena are also the most mysterious.

#Turbulence

🌪️ Turbulence: The Greatest Unsolved Problem in Classical Physics

Despite centuries of research, turbulence remains one of the deepest mysteries in physics. From the chaotic wake behind an aircraft to swirling hurricanes, ocean currents, combustion, blood flow, and even the birth of stars, turbulent motion is everywhere, yet predicting it precisely remains extraordinarily difficult.

This challenge has fascinated some of history's greatest scientific minds. Horace Lamb famously remarked that, upon reaching heaven, he hoped to finally understand quantum electrodynamics and turbulence, adding that he was "rather optimistic" about the former. Richard Feynman likewise described turbulence as one of the most important unsolved problems in classical physics. A quote often attributed to Werner Heisenberg expresses a similar sentiment, although its authenticity remains uncertain.

The difficulty lies in turbulence's nonlinear nature: tiny changes can produce dramatically different outcomes, with countless interacting vortices spanning an enormous range of scales. While the Navier–Stokes equations describe fluid motion, obtaining complete analytical solutions for turbulent flows remains one of the greatest challenges in physics, mathematics, and computational science.

Understanding turbulence isn't merely an academic pursuit, it has profound implications for aviation, climate modelling, renewable energy, engineering, astrophysics, medicine, and space exploration. Every advance brings us closer to more efficient aircraft, more accurate weather forecasts, cleaner energy systems, and deeper insights into the natural world.

Sometimes, the most familiar phenomena are also the most mysterious.

#Turbulence

And #FantasticVoyage lived up to expectations…

It looked fantastic. #Turbulence was mentioned very early on… 🥳 and the sets were so cool.

And there cant be many movies where a plot point is resolved by a dude whipping out a slide-rule?

The only downer was that it was an afternoon movie and the weather was the nicest we’ve had in weeks. 😐

https://youtu.be/dO5E4wkg0hA

And #FantasticVoyage lived up to expectations…

It looked fantastic. #Turbulence was mentioned very early on… 🥳 and the sets were so cool.

And there cant be many movies where a plot point is resolved by a dude whipping out a slide-rule?

The only downer was that it was an afternoon movie and the weather was the nicest we’ve had in weeks. 😐

https://youtu.be/dO5E4wkg0hA

💁🏻‍♀️ TIL: 🦅💨 The nankeen #kestrel, a tiny Australian #falcon, flies with exceptional stability in turbulent winds, inspiring one international #research team.

Wind tunnel #experiments showed wing and tail extensions helped #birds maintain lift and reduce #flight irregularities. The team aims to integrate these features into small #drones as #climatechange increases atmospheric #turbulence.

👉 https://www.popsci.com/technology/falcon-aircraft-turbulence/

#biomimicry #nankeekestrel #engineering #robotics #climate #aviation #australia #animals #technology #tech

💁🏻‍♀️ TIL: 🦅💨 The nankeen #kestrel, a tiny Australian #falcon, flies with exceptional stability in turbulent winds, inspiring one international #research team.

Wind tunnel #experiments showed wing and tail extensions helped #birds maintain lift and reduce #flight irregularities. The team aims to integrate these features into small #drones as #climatechange increases atmospheric #turbulence.

👉 https://www.popsci.com/technology/falcon-aircraft-turbulence/

#biomimicry #nankeekestrel #engineering #robotics #climate #aviation #australia #animals #technology #tech

Droplets in dense sprays live much longer than expected. The surrounding vapor saturates locally, delaying evaporation.

What controls the system is not the droplet, but the evolving vapor field.

🔗 https://journals.aps.org/prfluids/abstract/10.1103/ms1r-7jb9

#PhaseChange #Evaporation #Turbulence #Droplets #Physics

Droplets in dense sprays live much longer than expected. The surrounding vapor saturates locally, delaying evaporation.

What controls the system is not the droplet, but the evolving vapor field.

🔗 https://journals.aps.org/prfluids/abstract/10.1103/ms1r-7jb9

#PhaseChange #Evaporation #Turbulence #Droplets #Physics

“Inferno”

Nothing showcases the incredible power of our atmosphere like storms, and no one does stormchase photography like Mike Olbinski. In this vignette, he shows a stunning line of supercells caught near sunset on July 17, 2022. The high shear–combined with the setting sun–put on an incredible show. Dust blown up in a haboob, microbursts and downpours in the distance, and lots of churning, roiling turbulence. (Video and image credit: M. Olbinski)

“Inferno”

Nothing showcases the incredible power of our atmosphere like storms, and no one does stormchase photography like Mike Olbinski. In this vignette, he shows a stunning line of supercells caught near sunset on July 17, 2022. The high shear–combined with the setting sun–put on an incredible show. Dust blown up in a haboob, microbursts and downpours in the distance, and lots of churning, roiling turbulence. (Video and image credit: M. Olbinski)

From coffee-like swirls to atmospheric chaos, a data-driven model reproduces turbulent particle motion across scales using auto-regressive learning with memory effects.

https://phys.org/news/2026-05-driven-captures-dynamics-turbulence-scale.html

#turbulence #AI #fluiddynamics #machinelearning #physics

From coffee-like swirls to atmospheric chaos, a data-driven model reproduces turbulent particle motion across scales using auto-regressive learning with memory effects.

https://phys.org/news/2026-05-driven-captures-dynamics-turbulence-scale.html

#turbulence #AI #fluiddynamics #machinelearning #physics

Experiment Probes Particle Influence on Turbulent Streams

ISS experiment reveals how tiny particles change turbulent fluid flows, impacting weather and engine design. Read the findings.

#ISSexperiment, #FluidDynamics, #Turbulence, #SpaceScience, #ParticleFlow

https://newsletter.tf/iss-particle-influence-turbulent-fluid-flows/

Scientists on the ISS found that small particles significantly change how turbulent fluids move. This is different from what we usually see on Earth.

#ISSexperiment, #FluidDynamics, #Turbulence, #SpaceScience, #ParticleFlow
https://newsletter.tf/iss-particle-influence-turbulent-fluid-flows/

On Dolphin Turbulence

Dolphins are such fast and agile swimmers that, naturally, scientists have long wanted to understand how they swim so well. A recent study draws on numerical simulation to analyze the flow a dolphin creates when flapping its tail.

The resulting flow is highly turbulent–researchers were only able to simulate up to a fraction of a dolphin’s actual Reynolds number–with both large-scale vortices and a cascade of smaller ones. The largest vortices, shown here in white, form on the upper and lower surface of the dolphin’s tail, then slide off the tail in a vortex ring. It’s these vortex rings, the researchers found, that provide the bulk of a dolphin’s thrust.

The smaller-scale vortices, in contrast, get formed by the large vortices, and they make little to no contribution to the dolphin’s propulsion. Interestingly, these results suggest that we might be able to describe the propulsion of dolphins and other highly turbulent swimmers by focusing only on the largest scales in the flow. (Video, image, and research credit: Y. Motoori et al.; via Ars Technica)

On Dolphin Turbulence

Dolphins are such fast and agile swimmers that, naturally, scientists have long wanted to understand how they swim so well. A recent study draws on numerical simulation to analyze the flow a dolphin creates when flapping its tail.

The resulting flow is highly turbulent–researchers were only able to simulate up to a fraction of a dolphin’s actual Reynolds number–with both large-scale vortices and a cascade of smaller ones. The largest vortices, shown here in white, form on the upper and lower surface of the dolphin’s tail, then slide off the tail in a vortex ring. It’s these vortex rings, the researchers found, that provide the bulk of a dolphin’s thrust.

The smaller-scale vortices, in contrast, get formed by the large vortices, and they make little to no contribution to the dolphin’s propulsion. Interestingly, these results suggest that we might be able to describe the propulsion of dolphins and other highly turbulent swimmers by focusing only on the largest scales in the flow. (Video, image, and research credit: Y. Motoori et al.; via Ars Technica)

What does turbulence look like in a quantum fluid?

Researchers are exploring how Bose–Einstein condensates shift from weak to strong turbulence, revealing how energy cascades behave when quantum mechanics takes over.

🔗 https://physicsworld.com/a/what-happens-when-a-bose-einstein-condensate-becomes-turbulent/

#QuantumPhysics #Turbulence #BEC #FluidDynamics #physics

What does turbulence look like in a quantum fluid?

Researchers are exploring how Bose–Einstein condensates shift from weak to strong turbulence, revealing how energy cascades behave when quantum mechanics takes over.

🔗 https://physicsworld.com/a/what-happens-when-a-bose-einstein-condensate-becomes-turbulent/

#QuantumPhysics #Turbulence #BEC #FluidDynamics #physics

Continuous injection and advection of Lagrangian passive tracers into a grid MHD cosmological (ENZO) simulation, to track where matter goes as function of time. Still testing stuff with my @julialang code run in post-processing over many saved snapshots. Complex flow and baryons circulation patters even under just the "simple" effect of gravity and fluid-dynamics.

#SimulatedUniverses #astrophysics #science #turbulence

Continuous injection and advection of Lagrangian passive tracers into a grid MHD cosmological (ENZO) simulation, to track where matter goes as function of time. Still testing stuff with my @julialang code run in post-processing over many saved snapshots. Complex flow and baryons circulation patters even under just the "simple" effect of gravity and fluid-dynamics.

#SimulatedUniverses #astrophysics #science #turbulence

Final report reveals #truth behind deadly #SingaporeAirlines flight SQ321 #turbulence
" #SIA said tt across 29,000 #Boeing777 flights btw May 2023 & July 2025, 12 cases of under-detection, 4 cases of overdetection & 20 cases of not detecting inclement weather were logged. Te SQ321 aircraft accounted for 1 of te non-detection cases & 2 of te under-detection cases. When te #aircraft was flown back to🇸🇬 fr BKK aft te incident, indicat'ns of under-detection also occurred"🧐 1/2
https://www.scmp.com/news/asia/southeast-asia/article/3354218/final-report-reveals-truth-behind-deadly-singapore-airlines-flight-sq321-turbulence?utm_source=rss_feed

Final report reveals #truth behind deadly #SingaporeAirlines flight SQ321 #turbulence
" #SIA said tt across 29,000 #Boeing777 flights btw May 2023 & July 2025, 12 cases of under-detection, 4 cases of overdetection & 20 cases of not detecting inclement weather were logged. Te SQ321 aircraft accounted for 1 of te non-detection cases & 2 of te under-detection cases. When te #aircraft was flown back to🇸🇬 fr BKK aft te incident, indicat'ns of under-detection also occurred"🧐 1/2
https://www.scmp.com/news/asia/southeast-asia/article/3354218/final-report-reveals-truth-behind-deadly-singapore-airlines-flight-sq321-turbulence?utm_source=rss_feed

The Milky Way's Turbulence Distorts Light from Distant Quasars
https://atlas.whatip.xyz/post.php?slug=the-milky-ways-turbulence-distorts-light-from-distant-quasars
<p>We may be getting better images of the Milky Way&#039;s supermassive black hole in the future
#turbulence #distorts #distant #images

Turbulence in the Milky Way's ISM Distorts Light from Distant Quasars
https://atlas.whatip.xyz/post.php?slug=turbulence-in-the-milky-ways-ism-distorts-light-from-distant-quasars
<p>We may be getting better images of the Milky Way&#039;s supermassive black hole in the future
#turbulence #distorts #distant #images

Aflutter in the Breeze

Fabrics flutter in seemingly impossible ways in artist Thomas Jackson‘s images. But despite first appearances, each photograph is true to life; the fabrics are suspended on taut lines. Their dance is driven by wind energy, drag, tension, and flow–not manipulated pixels. I love the (turbulent) energy of them! (Image credit: T. Jackson; via Colossal)

Aflutter in the Breeze

Fabrics flutter in seemingly impossible ways in artist Thomas Jackson‘s images. But despite first appearances, each photograph is true to life; the fabrics are suspended on taut lines. Their dance is driven by wind energy, drag, tension, and flow–not manipulated pixels. I love the (turbulent) energy of them! (Image credit: T. Jackson; via Colossal)

Recreating Atmospheres

In planetary atmospheres, energy and vorticity can cascade from large scales to smaller ones, but the mechanics of this transfer remain somewhat elusive. In a recent experiment, researchers built a lab-scale representation of an atmosphere using a meter-scale rotating annular tank. The outer bottom edge of the tank gets heated–representing the sun’s warming at the equator–while a pipe in the center of the tank gets cooled near the tank surface, which mimics the chilling effect of the poles. Researchers filled the tank with a water-glycerol mixture and recorded how their artificial atmosphere responded at different rotation rates.

The results show an energy spectrum that’s consistent with atmospheric observations–with a steep drop at large length scales and a flatter one at smaller scales. But interestingly, they also found that the cascade was temperature-dependent in ways that current models don’t predict. Untangling that effect could help us understand not only our atmosphere but those of other planets. (Image credit: tank – H. Scolan, animation – S. Ding et al.; research credit: S. Ding et al.; via APS)

Recreating Atmospheres

In planetary atmospheres, energy and vorticity can cascade from large scales to smaller ones, but the mechanics of this transfer remain somewhat elusive. In a recent experiment, researchers built a lab-scale representation of an atmosphere using a meter-scale rotating annular tank. The outer bottom edge of the tank gets heated–representing the sun’s warming at the equator–while a pipe in the center of the tank gets cooled near the tank surface, which mimics the chilling effect of the poles. Researchers filled the tank with a water-glycerol mixture and recorded how their artificial atmosphere responded at different rotation rates.

The results show an energy spectrum that’s consistent with atmospheric observations–with a steep drop at large length scales and a flatter one at smaller scales. But interestingly, they also found that the cascade was temperature-dependent in ways that current models don’t predict. Untangling that effect could help us understand not only our atmosphere but those of other planets. (Image credit: tank – H. Scolan, animation – S. Ding et al.; research credit: S. Ding et al.; via APS)

“Sidewall Symphony”

Flow visualization is both an art and science in fluid dynamics. Here, researchers were interested in studying the separation bubble that forms over a backward-facing ramp–a shape that shows up, for example, on an aircraft. In these areas, the flow over the surface separates, leaving an unsteady, recirculating bubble.

That’s the flow that researchers are visualizing here. They’ve done so by adding tiny helium-filled soap bubbles to the flow. With bright lights illuminating the bubbles, each one leaves a streak in a photograph, showing where the bubble moved during the time the camera’s shutter was open. Although images like these are beautiful, they can also be analyzed by computers to extract the underlying flow that created the image. (Image and research credit: B. Steinfurth et al.; see also here)

@vale Still, I was surprised just `filter: url(#turbulence)` on the parent element would have that much impact.

Movie TV Tech Geeks #MovieNews #RayLiotta #Turbulence #Action 'Die Hard' Meets 'Air Force One' in the 1997 Action Thriller Dominating Streaming http://dlvr.it/TS04Sb

A new perspective on pipe flow instability: not small perturbations, but energy thresholds for vortex formation may trigger turbulence in Hagen–Poiseuille flow.

🔗 https://pubs.aip.org/aip/pof/article-abstract/38/3/034102/3382025/Generalization-of-Landau-s-criterion-for-Hagen?redirectedFrom=fulltext

#FluidDynamics #FlowInstability #Turbulence #BoundaryLayer #Physics

@admin We see #turbulence, we upvote! 👍

In todays lecture on turbulent transport of cosmic rays: one of the very few "experiments" I can show to astronomers, i.e. the developing of #turbulence within this nice rotating disc, containing a rheoscopic fluid https://en.wikipedia.org/wiki/Rheoscopic_fluid

#astronomy #physics