Quote:
Originally Posted by aerohead
My hunch is that the roof is producing counter-rotating vortices at each side.
The mixing and shear of the highly energetic vortices is enough to evaporate the dew where they contact the body and backlight.
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If your hunch is correct, then images 1 and 2 in the album I linked reveal that the passenger side--where the mirror delete is--has notably less turbulance or vortices. The driver side shows the drying pattern over the driver's window and back along the rear quarter-panel and further across the rear window and trunk lid toward the middle. Didn't you say once that very precise max speed testing on your fourth gen Civic showed no change in top speed between mirrors and no mirrors?
Quote:
Originally Posted by kach22i
Zoom in on these images below to get an idea where you can delay the vortex forming and the associated drag which comes with them.
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My car is clearly closest to "G" in that image you shared.