Flightpath
and nothing has tip vortices...
Sorry, I thought that was common usage - trailing vortices originating at the tips of a wing with no flap or control surface deflection be OK?
BTW, I've just noticed that on your bottom picture showing how the wing vorticity behind the aircraft rolls up into two concentrated vortices, there are symbols +/- capital Gamma. Capital Gamma (sorry I can't find a way of inserting the Greek letter) is the standard symbol for circulation, so your picture is actually confirming that wake turbulence is proportional to circulation (and wing lift)
