I failed to respond to this:
Quote:
|
I have no idea what's the best method for the underbody rear end.
|
Here are two example from different fields of inquiry. From the race cars, a Lotus:
It accepts air that has been mangled (in the sense of rolled flat) by the bellypan and combs it into a non-turbulent wake. This is sorted out pragmatically on racetracks in the real world where fabrication is an issue. Then you have the quackademics with their wind tunnels chasing a theoretical optimum. Here's a whole thread on the Morelli fluid tail by aerohead.
http://ecomodder.com/forum/showthrea...ail-33283.html
Quote:
|
For almost a decade now I've been using the expression 'phantom tail' to describe a degree of boat tail truncation which would not affect the drag coefficient.
|
aerohead's active in Aerodynamics, but I don't know if he ever visits Ecomodding Central. ...and he's a little busy right now.
No fender skirts and diffuser here. The wheels are turbines that suck air into a duct that squirts it into the problematic lower corners of the ring-shaped air flow.
So there's more than one way to skin a furry mammal.
I got some commercial fiberglass fenders skirts, but they won't fit my car because the axle end impacts the skirts latching mechanism. Probably it needs a picture, but the modification I came up with (I will implement if I find them again. They're most likely here somewhere) is a tube bent to fit the contour across the bottom of the wheelwell with flattened ends. There would be brackets fore and aft with a notched, semi-circular hole. The skirt is offered up at 45° so the flattened ends slip in, but when the skirt rotates upright, they are locked in. Then a Dzeus fastener or camlock of some kind (or two) at the top to pin it there.
Coroplast harvest is [election] seasonal; coming up again in November.
Edit: Note especially the
last post in the Fluid Tail thread, which is all Ecomodder member's boat tails which have the ring shape but are longer than necessary (according to Morelli
)