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Old Oct 10, 2012, 03:55 PM
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Canada, ON, Toronto
Joined Jun 2012
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Quote:
Originally Posted by JetPlaneFlyer View Post
The trailing edge doesn't make a vortex* In streamline flow the air from the top of the wing and bottom come together smoothly in a laminar flow 'sheet'. You can see this in any wind tunnel airfoil visualisation. In turbulent or stalled flow there is chaotic turbulence, but still no vortex.
My understanding was that the situation is different at the low Reynolds numbers that our models experience. There are some nice images of trailing edge vortex wakes in the paper linked below.

http://goo.gl/yX2c9 (PDF of "On vortex shedding from an airfoil in low-Reynolds-number flows", Yarusevych, Sullivan & Kawall, 2009.)
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