JF
I've learned a great deal from this topic, and I appreciate the spirited debate.
I prepared a response to your original a couple of days ago but my machine decided not to send it! For what it's worth, here it is...
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I think it should be me to take off my hat to you JF. It's one thing to write a textual description of a Lanchester horseshoe vortex -- shurely Prandtl's Pferdshue?
-- but it's quite another to read it and pick out the inaccuracies!
Nevertheless, I'm going to stick to my guns and claim that mine was a poor description of correct physics. You are of course correct to say that the local direction of airflow in front of the leading edge is upwards, just as behind the trailing edge it is downwards. That's the effect of the vortex bound within the wing, across the airflow. That applies to an infinitely long wing too, where the flow is the same all the way along. Your point about stagnation, is of course, well made.
Cheers
Bookworm