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19bonestock88 05-21-2018 06:32 AM

Just an idea...
 
1 Attachment(s)
While my car is gonna be apart for bodywork, I considered buying some lawn edging and adding an air dam, and then I had a brain fart...

Why not try and make front and rear wheel air curtains?

kach22i 05-21-2018 08:28 AM

Give it a try, worse thing that could happen is it does not work as imagined and you have to remove it or block it off.

From what I've read these things are extensively tested and not shot at from the hip.

Shoot from the hip, what the heck.

The rear elements look similar to what is seen on semi-tractor trailers, perhaps they could be longer and at a gentler angle?

The front chamber looks like one of those bernoulli/venturi diagrams that explain pressure and velocity.

https://anjungsainssmkss.wordpress.c...in-air-flight/
https://anjungsainssmkss.files.wordp.../bernoulli.jpg

Aren't most air-curtains big mouth, small exit?

There is an energy consumption factor or "work done" when squeezing and unsqueezing air. Energy/drag considerations.

Maybe do what you can to merely redirect air and not work it too much either way?

19bonestock88 05-21-2018 08:45 AM

I did alternately think about skipping the tire spat and just angling the side skirt from inside of front tire to outside of rear tire... I also meant to draw a little bigger gap in the front design, but I doodled it in like 45sec

freebeard 05-21-2018 12:11 PM

What are the relative heights of the component parts?

Air curtains are for steerable wheels. Do you have rear-wheel steering? Else skirts.

The rear wheel 'curtain' as drawn is occluded by the side curtain anyway.

Vman455 05-21-2018 02:19 PM

The one problem I see is, every air curtain I've looked at on a production car (and I've looked at most, if not all of them) sits in the middle-to-top area of the wheel housing, not the bottom. It might be easier to add these Ioniq air curtain ducts to your bumper cover while you have it off. At $6 per, it's a cheap, OEM-engineered solution that's pretty much guaranteed to work; all you have to figure out is how to get intake air to them.

Quote:

Originally Posted by freebeard (Post 570274)
What are the relative heights of the component parts?

Air curtains are for steerable wheels. Do you have rear-wheel steering? Else skirts.

The rear wheel 'curtain' as drawn is occluded by the side curtain anyway.

The 2018 Honda Clarity uses rear wheel air curtains.

http://ecomodder.com/forum/member-vm...219-163059.jpg

As they demonstrated with the original Insight, the public won't buy skirted cars.

kach22i 05-22-2018 03:26 AM

Quote:

Originally Posted by Vman455 (Post 570290)
Ioniq

Let's try that link again.

https://www.hyundaipartsdeal.com/par...nt-bumper.html

Other images.

Nosing ahead: Hyundai Ioniq Electric reviewed
18 October 2016
by Lem Bingley
Nosing ahead: Hyundai Ioniq Electric reviewed
https://3.bp.blogspot.com/-865ZFghmV...iq-ev-side.jpg

https://1.bp.blogspot.com/-3L0mZca7H...ir-curtain.jpg

Quote:

No doubt the Ioniq’s shape is aerodynamically efficient. Other, less obvious tweaks for the sake of efficiency include plastic inserts between the spokes of the alloy wheels, creating a smoother surface without much extra weight, and vertical slots in the front bumper that create an “air curtain” to help reduce turbulence from the spinning front wheel.
https://2.bp.blogspot.com/-p5i_CBAPI...ront-above.jpg

Vman455 05-22-2018 09:58 AM

Quote:

Originally Posted by kach22i (Post 570316)

Both links work on my computer.... One is for the RH duct, the other for the LH.

kach22i 05-22-2018 04:58 PM

Quote:

Originally Posted by Vman455 (Post 570328)
Both links work on my computer.... One is for the RH duct, the other for the LH.

Strange, both are working on my computer now as well.

The Ioniq example follows the larger opening, smaller exit rule, and looks to be a little higher than the center-line of the wheel as well.

mpg_numbers_guy 05-22-2018 10:19 PM

The rear wheel spats in the original picture look like they would increase the size of your wake by shooting air out the sides instead of directing it around.

hat_man 05-22-2018 10:32 PM

This idea sounds familiar. LoL.

http://ecomodder.com/forum/showthrea...hts-29302.html


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