How to Make a SQUARE Vortex Ring! ft. 3blue1brown

Thanks to Physics Girl for doing a great Video and Experiment, to Dan Walsh for helping, and to 3B1B (a.k.a. Grant Sanderson) for introducing me to this channel, I will subscribe immediately after posting this.


And shame on you all, that I predicted wrong ;) Here is my comment from 3B1B video:

And here I thought I was going to learn something. And instead of something that my small brain can grasp, You challenge us with Navier-Stokes Equations ;)

Thank You, although I hope that You will someday make essence of Probability, or if You are going with fluid dynamics, the essence of it.


EDIT: Also before watching Physics Girl video: The corners of square will make additional vortexes, and it will depend whether the square is smaller or bigger than the circle, so these Vortexes will have either positive or negative pressure. That's a prediction - I'm very bad at fluid dynamics.


EDIT2: After Watching Physics Girl Video (SPOILERS): I knew that corners might do something (duh), I thought they would be the points where it breaks. It probably does, but only after main Vortex loses enough energy (by just traveling + by wobbling), then they are the weakest points. I wonder if for a moment you have 4 almost linear, and disconnected vortexes?