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Old 03-04-2008, 12:29 PM   #2 (permalink)
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
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I'll take a stab as I really don't fully understand those little lip spoilers enough (enough to my satisfaction )

This image shows CFD of a Mitsubishi Lancer IIRC. The right side doesn't have vortex generators (so ignore the left side). Notice how the blue area (lower velocity air) pretty much misses the trunk lid on a downward angle? By adding a lip there, flow is straightened out before leaving the vehicle and I would think would make flow interaction from swirling air below the car and above the car less of a problem...

If someone has a better understanding, please chime in
Cars have not created a new problem. They merely made more urgent the necessity to solve existing ones.
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