It would be nice if you learnt to agree to disagree.
You have made your point loud and clear, and everybody heard it and understood it. They might or might not share it. Please stop hammering the point as that won't help it get in. It is not a nail and members are not wood.
Others have also made their points of view clear, and you probably understood them too. You might or might not agree with them.
Now, the idea in a forum like this is not to convince everybody else that you are right. You might be or not, I don't know. But with this many people here one has to show respect for other people's point of view. Shouting "again" many times and louder and louder does not make an idea more convincing, only more tiresome.
I think that a forum should be about exchanging ideas, not about winning arguments. But obviously many people disagree with me.
Now for a reasoned argument that has not been posted 3 times just in different words: The highest point in the wheel is rotating against the flow at twice the speed of the car (the bottom of the wheel is stationary). Where this surface (presumably with its own boundary layer) moving forward at 400Km/h meets air moving backwards at 200Km/h one would expect at least a little bit of high pressure, I guess.
Edit: I made a mistake there by using two different frames of reference. In the frame where the top of the wheel is moving a 400Km/h the external flow is stationary, so the relative speed is only 400Km/h, not 600.
Last edited by hollus on Mon Mar 26, 2012 9:55 pm, edited 1 time in total.
Wind turbines are cool, elegant and magnificent. TANSTAAFL!