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I've always wondered since learning slightly more in college physics. What is supposed to make the air going over the top of the wing suddenly go faster than the air going over the bottom of the wing in the Bernoulli model?



Lower pressure region sucks the flow down to attach to the upper surface. As the pressure is reduced, speed must increase to conserve momentum.


The way I was always taught the Bernoulli explanation was that the speed difference created the lower pressure which causes the lift. So it seems a little circular, what's causing the low pressure in your version of it? Is it a mix because any time the flow separates from the wing it leaves a low pressure area that attaches the flow to the wing?




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