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.
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.
“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
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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Another case of #FuckYeahFluidDynamics and #LaminarFlow
"Hydraulic microphone"
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