I’ve been past this fountain quite a few times, and thought that the laminar flow effect was neat, but nothing amazing. Turns out when there’s a breeze it looks much more interesting, especially in freeze-frame.

#laminarFlow #fountain

It still quite tickles me that everyday, for free, gratis, and no cost to myself, my kitchen mixer tap & ensuite cold tap both cheerfully provide me a succinct practical demonstration of the #ReynoldsNumber in action. Tis fluidically gratifying! 🙃

#FluidMechanics #FluidDynamics #TurbulentFlow #LaminarFlow

“Now I See – The Collection Vol. 2”

In the next video of his current collection, Roman De Giuli takes us flying over liquid landscapes that look like our Earth in miniature. Many of them have the feeling of river deltas or glaciers. Sharp-eyed viewers will notice bubbles and flotsam in some of these streams. If you follow them, you can see how the flows vary — wiggling around islands, speeding up through constrictions and slowing down when the stream widens. It is, as always, a beautiful form of flow visualization. (Video and image credit: R. De Giuli)

#flowVisualization #fluidDynamics #fluidsAsArt #laminarFlow #physics #riverDelta #science

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. A cilia’s stroke is always asymmetric — no simple back-and-forth motions for them — because, at the algae’s scale, symmetric motion won’t move you anywhere. This is a peculiar feature of small swimmers in viscous fluids. At the human scale, we can mimic the same physics by mixing and unmixing fluids like corn syrup. (Video and image credit: L. Cesteros; via Nikon Small World in Motion)

Synura uvella algae swimming under magnification.

https://fyfluiddynamics.com/2024/10/swimming-with-cilia/

#biology #cilia #fluidDynamics #laminarFlow #microswimmer #physics #science #viscousFlow

2024 Small World in Motion Competition

View the winning entries from the 2024 Small World in Motion Competition

Nikon Small World

Using the mapping w → z+1/z, you get something that looks remarkably like an #aerofoil.

It is a #ConformalMapping meaning that angles are preserved during the mapping. In this animation, I’ve varied the imaginary part of the the eccentricity, while keeping the real part the same. With a zero #AngleOfAttack, you can see the change in the airflow around the #wing as its shape changes.

#MyWork #CCBYSA #AppliedMathematics #WxMaxima #FreeSoftware #Aeronautics #Aerodynamics #LaminarFlow

The #Zhukovsky #Aerofoil (sometimes transliterated as #Joukowsky from #Russian), is a 2D model of #streamlined #Airflow past a #wing. It uses #ComplexVariable and is an #AnalyticFunction (i.e. #Differentiable everywhere, save at isolated #Singularities). Take a circle in the #ComplexPlane which is not quite centred at the #origin but passes through the #coordinate (1,0) or (z=1+0i).

#MyWork #CCBYSA #AppliedMathematics #WxMaxima #FreeSoftware #Aeronautics #Aerodynamics #LaminarFlow

Wind Tunnel Uses the Last Straw

#science #laminarflow #windtunnel #hackaday

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hackaday.com/2023/11/10/wind-t…

Wind Tunnel Uses The Last Straw

If you watch the movies, there isn’t much to a wind tunnel. Just a fan and a tunnel, right? The truth is there’s a lot more to it than that, and [ejs13] shows you how you can make a sma…

Hackaday
Wind Tunnel Uses The Last Straw

If you watch the movies, there isn’t much to a wind tunnel. Just a fan and a tunnel, right? The truth is there’s a lot more to it than that, and [ejs13] shows you how you can make a sma…

Hackaday
Hydraulic microphone

YouTube

I just thought the standing waves set up in this stream of water coming out of my water pitcher filter were mesmerizing. Video is 4x speed so you can see the evolution of the wave pattern as the pitcher fills.

#fluids #fluiddynamics #laminarflow #surfacetension #standingwave