[QUOTE=fearlessjoe;494733]i see what your saying.... and i dont pretend to be a big expert.... or a little one lol...
i may be wrong but in my mind the back of the car where the air is all being dragged along by the car has to be a low presure area surely... compared to the roof anyway... thats how it looks to me from the first pic i found below
so it seems like it would get sucked through... you would obviously need to actually know what you were doing to make it work, size of entry and exit... shape of it
roof inlet or scoop.... i dont know im just thinking outloud[/QUOTE
*The lowest pressure on the car is near where your inlet is,(the massive yellow area above the roof)
*The pressure where your outlet would be is at a higher pressure.
*The flow would be backwards.
*The boundary layer would be destroyed and you'd have higher overall drag.
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*You can't trick the air.
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*Your drag is caused primarily by the pressure differential between the front stagnation point and the base pressure of the wake.
*The only way you can reduce the drag is to elongate the body with a streamlined profile to either reduce,or eliminate the wake.
*This profile is what the air wants to see.It's the granddaddy of low drag cars
*You just extend the body as far as you're willing,then chop it off like you'd do a loaf of bread
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*If you had a free energy device,you could blow air into the wake and this would definitely reduce drag,but it won't work as a passive device.About 60-researchers have tried so far,all unsuccessful.
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