Originally Posted by
balsa model
You obviously saw that I was trying to do away with the circulation theory, for at least one airfoil case. But I don't get the reasoning about equal speeds leading to "no net vertical component".
Considering air as incompressible means if the speeds are constant so is volume flow.
Where do you want to get the (additional) vertical volume flow (the vertical component that obiously didn't exist before) from if we assume the horizontal component to remain constant? (Free stream air flow/speed behind the wing, no circulation). Air doesn't decellerate below free stream velocity without a good reason to do so.
If you want to add a vertical volume flow (Newton), you need more volume flow upstream over the wing. Considering air incompressible this requires higher velocity.
Bernoulli, here we come...