#pipe flow

Begun in 1238, Alhambra Palace in Grenada, Spain is a monument to Islamic architecture and clever engineering. Despite sitting far above the city, the Alhambra was fed by the river, diverted from upstream along a canal. (Video and image credit: Primal Space) Read the full article

Can a solid flow? What would that even look like? Researchers explored these questions with an ultra-soft gel (think 100,000 times softer than a gummy bear) pumped through a ring-shaped annular pipe.  (Image and research credit: J. Hwang et al.; via APS News) Read the full article

One of the most important and underappreciated pieces of urban infrastructure is the sewage system. We rely on them to make our waste vanish, as if by magic. In reality, these systems are carefully engineered and built to be largely self-cleaning and future-proof. (Image and video credit: Practical Engineering) Read the full article

When mammals breathe, air flows back and forth inside our lungs. But in birds that inhale and exhale get transformed into one-directional flow inside their lungs. (Image credit: bird - A. Mckie, others - Q. Nguyen et al.; research credit: Q. Nguyen et al.; via APS Physics; submitted by Kam-Yung Soh)

Whether you're a homeowner or an engineer, at some point you'll have to deal with pipe flow and the challenges inherent to getting water from Point A to Point B. (Video and image credit: Practical Engineering) Read the full article

Newton's 3rd law says that every action has an equal and opposite reaction. And sometimes, that's a problem for engineers.  (Video and image credit: Practical Engineering)

These researchers use a clever arrangement of magnets to create a tube with ferrofluid walls instead of solid ones. (Video, image, and research credit: P. Dunne et al.; via Physics World; submitted by Kam-Yung Soh) Read the full article

In many ways, our blood vessels are tiny pipes, but there's a crucial difference in the flow they carry: it's pulsatile. And that can mean new sources for turbulence. (Image and research credit: D. Xu et al.; via phys.org)