Beyond the whirlpools

I have been experimenting in the lab with whirlpool vortices to set up more complex flows.  Mini-whirlpools can often be seen in action next to the main spiral of flow, and by using different coloured inks, the different systems can be easily seen. 

At the end of the session, I usually use the remaining ink to create images, and have posted a couple below. These images are reminiscent of the ink on paper work - except the results are now being photographed, before the image gets washed away forever!

'Battle of the Magenta'

'A second spiral'

'Wheels of fire'

'Imaginary island'