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Old 11-12-2014, 06:37 PM   #25 (permalink)
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Originally Posted by woodstock74 View Post
Talk to me more about this mutilated convex form, how is it potentially more advantageous than the pure flat covers?
The air will separate on the back slope of the leading sidewall,creating a pool of stagnant air within this void (you can see this happening with the Spirit of Ecomodder at the Darko tunnel).
The convexity fills in much of the void,pushing the face of the cover out into the active airstream.The boundary layer of the cover is energized,and little if any stalled flow before flow starts up the trailing sidewall bulge.With a better 'source',the flow has an opportunity for attachment a little further down the trailing sidewall 'sink',minimizing the tire wake.
The convexity is stronger than a flat disc too,so a thinner,lighter cover can be used.
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