This describes Morelli's FIAT Punto.
I can't find a picture onsite that isn't Photobucketed, but here's a relevant link:
http://ecomodder.com/forum/showthrea...tml#post259470. 2nd hand is hearsay but it suggests:
Quote:
Adding a centrifugal fan to the rear wheels so as to draw air from the outside through the wheel yields a 5kW savings for the 240 W expended (20.8:1 advantage) by the following:
a: narrower wake due to air suction
b: a major decrease in base drag
c. suppression of jetting vortices by means of the Coanda effect.
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Also:
Quote:
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Probably better to exhaust the front wheel wells like the Viper does.
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This plows the air out from under the car, and constitutes the outer fence of a diffuser.