Quote:
Originally Posted by JulianEdgar
taking a pic of wool tufts with the car stopped is pointless. That tells you nothing!
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Not so! It was wicked cool. I had placed the tufts and as I did my tests that week one day my commute took me into light, misty fog as I rolled along at 45 mph, the tufts got wet and stuck in place. When I arrived, no longer in the mist though still shielded from the sun by the overcast sky, the body was mostly air dry but the tufts were still wet and "pasted" in place at their 45 mph position. Made a great picture. You can see evidence of the downwash from the roof, the c-pillar vortices, the recirculation bubble around the third tail light, and the reattached flow at the trailing edge of the decklid. The counter rotating trailing vortices from the c-pillars show up: clockwise on the left makes the tufts angle left slightly and counterclockwise on the right makes the tufts angle rightward a little.