Visualizing turbulence
Some mathematical order amidst the chaos of turbulence.<br />Vortex rings with Physics Girl: https://youtu.be/N7d_RWyOv20<br />Brought to you by you: http://3b1b.co/turbulence-thanks<br />Home page: https://www.3blue1brown.com<br /><br />Thanks to Dan Walsh for many great ideas, and thanks to Mike Hansen for many helpful conversations.<br /><br />Error correction: I meant to describe Kolmogorov as a “20th-century mathematician” not “19th-century”. Whoops! I think during the narration I must have made the classic 1900s vs. 19th-century mix up. Anyone aware of his work is more than aware of what century he lived in, which apparently applies to quite a few commenters.<br /><br />And while we're here, the animation at 9:55 misleadingly has the vortex kind of speed up during the transition, which it should not do. Really, the velocity scales of eddies decreases for lower length scales.<br /><br />Introduction to turbulence:<br />http://www.astronomy.ohio-state.edu/~ryden/ast825/ch7.pdf<br /><br />More details on vortex stretching:<br />https://www.math.nyu.edu/faculty/tabak/vorticity.pdf<br /><br />Video on NightHawkInLight with a similar demo:<br />https://youtu.be/K94Cc21KEIA<br /><br />Music by Vincent Rubinetti:<br />https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown<br /><br />------------------<br /><br />3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe: http://3b1b.co/subscribe<br /><br />Various social media stuffs:<br />Website: https://www.3blue1brown.com<br />Twitter: https://twitter.com/3blue1brown<br />Reddit: https://www.reddit.com/r/3blue1brown<br />Instagram: https://www.instagram.com/3blue1brown_animations/<br />Patreon: https://patreon.com/3blue1brown<br />Facebook: https://www.facebook.com/3blue1brown