Quote:
Originally Posted by Daox
Very nice. I was surprised to see the improvement even above the wheel well. That is quite the difference.
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I was too, until I re-read a bit about wheel well/tire aerodynamics:
"The top of the wheel is moving into the air stream at twice the driving speed,
and is trying to drag the air forward against the stream." (
Contribution of different devices to the total drag - Chalmers University)
So the air being dragged up & forward at the top/outside of the tire collides with the normal air stream flowing aft ... and makes a mess. I think that may be what we're seeing above/aft of the top of the wheel arch.