Parametric World

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[wolverxne]

Abstract || Thomas Spruenken 

[afracturedreality]

Murine Intestine

This cross section of a mouse intestine has been stained with fluorescent dyes. The red curved border along the bottom is the outer muscular wall that encloses the intestine. The green fingerlike projections pointing into the lumen (the black space near the top, center of the image) are villi. Villi increase the internal surface area of the intestine and make more surface area available to nutrient absorption. To further increase surface area, villi themselves are covered in smaller fingerlike projections called microvilli, or collectively the “brush border.” A red dye was used to stain actin filaments which are densely packed in microvilli—this also outlined the internal walls of the intestine. Goblet cell mucus were detected with a blue-fluorescent dye, whereas cell nuclei were stained green.

Photo credit: Thermo Fischer Scientific.

[theparametricimaginarium-blog]

Vlad Tenu Minimal Surface

[fuckyeahfluiddynamics]

Turbulence, the chaotic regime of fluid dynamics, is a complicated beast. It’s hard to analyze or predict, but we do understand some general ideas about it, like the fact that energy starts out in large eddies, cascades down smaller and smaller ones, and finally gets dissipated at the smallest scales, where viscosity snuffs them out. But that’s only true in three dimensions.

Two-dimensional turbulence – what you get when you confine your fluid to a flat plane – is even weirder. When turbulence is flat, you can actually get an inverse energy cascade, where the energy of small eddies can add up to feed bigger ones. For awhile, this was treated as a mathematical curiosity; after all, we live in a three-dimensional world. But there are situations in life that are nearly two-dimensional, like the surface of a soap bubble or the atmosphere of a planet (which is typically exceptionally thin compared to the planet’s radius). And, little by little, scientists are collecting evidence that this inverse cascade – a flow of energy from small scales to larger ones – does actually happen in the real world. Understanding how this works may explain why hurricanes can intensify even when conditions are “wrong” and how Jupiter’s Great Red Spot has persisted for centuries. To learn more, check out Quanta Magazine’s full article on the work. (Image credit: NASA et al., M. Appel; via Quanta; submitted by Kam-Yung Soh)

[fuckyeahfluiddynamics]

Vibrate a pool of water and above a critical frequency, a pattern of standing waves will form on the surface. These are known as Faraday waves after Michael Faraday, who studied the phenomenon in the early half of the nineteenth century. The kaleidoscopic view of them you see here comes from photographer Linden Gledhill, who used a high-speed camera and an LED ring light reflecting off the water to capture the changing motions of the waves. The wave patterns oscillate at half the frequency of the driving vibration, and, as the driving frequency changes, the wave patterns shift dramatically. Higher frequencies create more complicated patterns. (Image and video credit: L. Gledhill)

[fuckyeahfluiddynamics]

Turbulence, the seemingly random and chaotic state that fluids often tend toward, can be difficult to wrap one’s head around. Turn your faucet on high or pour milk into your coffee, and the flow just looks like a completely unpredictable mess. But there are important patterns to be found.These flows have many different lengthscales and timescales to them. Think of a cloud. There are very large-scale motions that are close to the size of the entire cloud, but there are also very small ones that may be only a centimeter or so in size. 

Our best understanding of turbulence so far says that energy starts out in these large scales and slowly works its way down to the smaller ones, where viscosity (essentially friction, in this case) can transform that motion into heat. Above you see a creative way to display this fact. Using data from a numerical simulation, the authors transformed velocity information into these mandala-like patterns. The center of the image represents the large lengthscales, where energy is added. Moving around the circle, like a clock’s hand does, shows different positions in space. Moving radially from the center outward takes you through different lengthscales from large to small. 

Notice how the large lengthscales break into smaller and smaller ones as you move outward. The pattern looks like a set of fractal pitchforks, with each lengthscale fracturing into smaller and smaller ones as the turbulence breaks down further. There’s lots more to see in the original poster, below, but you should really click here for the glorious full-size original. The poem, by the way, is the work of physicist Lewis Richardson, who wrote it to summarize how turbulence works. (Image credit: M. Bassenne et al.)

[itscolossal]

Unique Weathering Pattern Creates Fascinating Geometric Ripples on a Chain Link Fence

[fuckyeahfluiddynamics]

In “Liquid Calligraphy,” artist Rus Khasanov’s letters dissolve once he draws them. At first, the white ink spreads in narrow fingers, probably driven by a combination of surface tension gradients, capillary action, and simple diffusion. But then, in flashes, the letters morph faster and flow outward. My best guess is that each jump is a spray from a bottle full of a low surface tension liquid like alcohol. The spray triggers faster outflows than before, like those seen when a strong difference in surface tension activates the Marangoni effect. It’s a beautiful and different artistic take on these important fluid forces. Check out more of his videos here or enjoy high-resolution stills and wallpapers in this style from his Behance page. (Image and video credit: R. Khasanov; submitted by TBBQoC)

[fuckyeahfluiddynamics]

Water flowing back and forth over sand quickly forms a field of dune-like wrinkles. On the upstream side, the flow is a little faster, and it picks up grains of sand. When the flow slows on the downstream side of a bump, the sand gets deposited. In this way, small bumps in the sand continue growing larger. A similar process between wind and sand forms enormous dunes here on Earth and on Mars. These smaller water-driven wrinkles are very common in tidal areas and in sandy creeks. They can even build up and break down such that they create periodic waves that surge down the stream. (Image and video credit: amàco et al.)

[parametricworld]

Elytra Filament Pavilion - V&A Museum London

For full project infomation see: https://www.itke.uni-stuttgart.de/archives/portfolio-type/elytra-filament-pavilion-victoria-and-albert-museum

[dumo]

DesignBoom features today our recent work on biomaterials fabrication @ MIT Media Lab Mediated Matter Group 

[grossmagic]

[fractalien-blog]

Romanesco Broccoli

[bijoux-et-mineraux]

Ammonite Fossil (Goniatite, Devonian) - Atlas Mtns, Morocco

[seatsnbeats]

Zaha Hadid Architects :: Bow

[szimmetria-airtemmizs]

Space filling curve, five generation. Inspired by the awesome http://robertfathauer.com/IterationArt.html

Twitter, Facebook.  

[nexttoparchitects]

Can architecture integrate living functions?

How can we design kinetic, living architecture that engages with visitors during extended interactions and enhances human experience in an immersive environment?

How do humans respond to these evolving interactions, in a process of mutual adaptation?

http://livingarchitecturesystems.com

[fuckyeahfluiddynamics]

Branching, tree-like structures are found throughout nature. Take a thin layer of a viscous fluid pressed between two glass plates and inject a less viscous fluid like air and you’ll get branch-like structures. These are the result of the Saffman-Taylor instability and usually result in a fairly random outcome because of the instability’s sensitivity to small variations. In a new study, researchers use multiple air injection ports to finely control the formation and growth of air fingers, allowing them to build well-ordered branching structures like the one above. By placing the air ports in an array, the same technique can be used to create fluid meshes. The authors suggest this new technique could have wide-ranging applications including the design of heat exchangers and the growth of artificial tissues. (Image and research credit: T. ul Islam and P. Gandhi, source)