Seeing Rotor! On the Lee side of a mini mountain Day 6 - 30 Day Youtube Challenge - BANDARRA

I've been wanting to make experiments like these for a while.

It's really satisfying to watch similar processes in small scale that also happen in the outside world in a very large scale.

I started with just playing around with different things like coffee. milk and water with different colors. Then I've also tried oil with papprika and that didn't work great.

In the end I built a small spine shaped hill out of a tin and that worked fairly well when submerged in warm-ish water and using a syringe and pipe to deliver cold water with a dye. The injected water flow can be easily distinguished from the surrounding water as it is colder and different color.

In the end it was quite clear that an area of rotor was set up on the lee side of my mountain and the faster the speed of the injected flow the bigger and more violent would be the rotor on the lee side as you would expect.

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