Some 46 years ago a good video was made on rotating flows. It is number 19 in this series Movies: https://www.youtube.com/playlist?list=PL0EC6527BE871ABA3 Written lectures: http://web.mit.edu/hml/notes.html
Inertia oscillations and free shear layers developed and filmed by David Fultz Hydrodynamics Laboratory Department och the Geophysical Sciences University of Chicago The polygon structure similar to the one on Saturnus north pole can be seen here. https://www.youtube.com/watch?v=Ans3tnvMyTk#t=1371 The structure can be produced in laboratory. David
