applied physics

Animation of the Heat Diffusion in an L-shaped domain

Standard

\partial_t T = K \partial^2_x T

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Vortices in my coffee and the Perpetual Ocean

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In a previous post I shared a video on mixing and unmixing of fluids. This time I share with you an image I took of my coffee. With some milk fluid dynamics created amazing vortices. Following it is an animation of the time evolution of the vortices.

Milk vortices.jpg
“Milk vortices” by Astrobob – Own work. Licensed under CC BY-SA 4.0 via Commons.

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[Image] Archimedes’ screw

Image

[Image] Archimedes' screw

In the Netherlands, some of the windmills used to drain the polders at Kinderdijk have been replaced by modern Archimedes screws.

Image by: M.A. Wijngaarden
License: CC Attribution-Share Alike 2.5 Generic license.