File talk:Irrotational vortex.gif

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Incorrect illustration?[edit]

The en-wiki article [1] says that in an irrotational vortex, the tangential velocity is proportional to 1/r (so the angular velocity is proportional to 1/r2). However, the animation looks like it has constant angular velocity just like a rotational vortex. Isn't this wrong? --Jmk (talk) 09:32, 7 January 2012 (UTC)[reply]

I got a notification on en.wp. I fixed it now :). Silver Spoon (talk) 11:19, 12 January 2012 (UTC)[reply]
The flow is still not irrational. Now it seems like the angular velocity is proportional to 1/r, but it should be proportional to 1/r2 in order for the flow to be irrational. The velocity on the other hand should be proportional to 1/r, but that seems to be constant. Compare with File:Vorticity Figure 02 a-m.gif. —Kri (talk) 19:23, 21 August 2014 (UTC)[reply]
Retrieved from "https://commons.wikimedia.org/w/index.php?title=File_talk:Irrotational_vortex.gif&oldid=132276595"