Quote:
Originally Posted by freebeard
Your search term is 'air curtain'.
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Ah! Thx freebeerd. I'm getting 'the picture' now.
Kinda like a 'blown wing'!
(My brain being lazy!
)
Caddylackn:
If you want to get into the (very) fine details of ducts you want to round that duct's leading edge, with sandpaper, with more rounding of the inner edge than the outer.
Sharp 90 degree edges are anathema to getting air through a duct! (Or to follow the outer skin)
Half ellipse (3 to 1 ratio) in the front leading edge; sharp trailing edge.
As doing so is pretty quick and easy; why not...
I'd also consider polishing the inner surface as skin friction plays a very big part in long ducts.
The science I found said that a finish using anything below 500 grit sandpaper was very bad.
You also don't want any screws etc sticking into the duct
Then, as the top of the wheel and tire moves forward at 2X the car's speed (Squared for aero) one would think that directing the exit flow downward some is a good idea..?
(Bottom of the wheel is doing 0 mph forward..!)
Everyone??
The thread on this's pics do seem to point to these pointing air to the lower part of the wheel, rather than the top as Caddylackn has it..?
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