Quote:
Originally Posted by aerohead
The air blowing the tufts is seeking a lower pressure in an attempt to achieve equilibrium,or actually caught inside some circulation (vorticity) induced by separation.
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The tufts were at an almost right angle to the axis of the car, which makes me believe it's coming from vorticity. If the air were seeking a lower pressure region, it would not be able to have so much velocity in that direction at equilibrium. Looking at the paint, the typical "swirl" scratch marks don't exist in that area; the scratches are all at a 70-80 degree angle going inwards towards the engine compartment.