Quote:
Originally Posted by Cd
Has the topic of window screen used as a skin on vehicles been discussed recently ?
This provides a surface for air to skip over, but also one that allows crosswinds to pass through.
There is a large metal chainlink fence at my job.
It takes maybe 30 lbs of force to close it, yet even a moderate breeze will cause it to slide on its railing and slam shut.
I know some of you sail boats.
I had no idea that wind would have so much pull on such a small surface area.
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No porous surface can support airflow.
If the entire perimeter of the vehicle's underbody is 'dammed' ( airdams, rocker panels, and rear facia, dead air will be trapped within that footprint, and active flow will skip over ( under ) this stagnant, dead air, which travels along, like the forward stagnation bubble.
Cooling air, from the engine bay will contaminate this area. EVs have the advantage.