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Old 07-15-2012, 04:05 PM   #13 (permalink)
orange4boy
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Location: The Wet Coast, Kanuckistan.
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The Golden Egg - '93 Toyota Previa DX
90 day: 31.91 mpg (US)

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That's a very interesting set of notes especially for a van driver like myself. I would love to chop and slant the roof on my Previa like the HX3! Just a weekend job, really.

I went over to Mulsanne's Corner and found the following which was at the bottom of an article on the Toyota GT One.

Mulsanne's Corner: GT-One, 101?

Quote:
Though ultimately vortices could be used for the benefit of top side race car aerodynamics, specifically in drag reduction. Juha Kivekas sums it up best, "It certainly is possible to use longitudinal vortices to fill the wake of the cockpit bulge. This could be done using delta wings on the sides of the cockpit. And actually there have been studies on lorries where angled delta wing were used near the trailing edge of the cab and have been found to increase base pressure; that is, to reduce drag. The vortices steal energy from the main flow and mix it into the wake flow and thus reduce the effective length of the wake. This is Mother Nature's explanation, we simply call it reduced drag."
This is a hot topic here at ecomodder. There have been countless arguments, experiments and claims regarding VG's and base filling drag reduction but no one has been able to find any research on the topic. The is one small reference in Hucho but that's it. Do you know where these studies were published?
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