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Forum: Aerodynamics

10-06-2017, 02:01 AM

Replies: 20

In cabin wind/"redneck a/c" aerodynamics

Views: 3,117

Posted By freebeard

Your CFD modeling of the interior is probably...

Your CFD modeling of the interior is probably inadequate. CFD in general requires supercomputer levels of compute power. The modeling is not representative and the resolution is too coarse. Sorry.
...

Forum: Aerodynamics

10-06-2017, 12:04 AM

Replies: 20

In cabin wind/"redneck a/c" aerodynamics

Views: 3,117

Posted By Grant-53

Sailplane cockpit exhaust system from South...

Sailplane cockpit exhaust system from South Africa is at top center behind the canopy.

Forum: Aerodynamics

10-05-2017, 01:37 PM

Replies: 20

In cabin wind/"redneck a/c" aerodynamics

Views: 3,117

Posted By freebeard

Thanks. If the sketch includes the window...

Thanks.

If the sketch includes the window area and door cut-lines that will disallow things that couldn't work.

The wake is stagnant, low-pressure air. Look at the engine cooling on the...

Forum: Aerodynamics

10-04-2017, 10:37 AM

Replies: 20

In cabin wind/"redneck a/c" aerodynamics

Views: 3,117

Posted By BamZipPow

Not able to see the link. :(

Not able to see the link. :(

Forum: Aerodynamics

03-14-2015, 01:22 PM

Replies: 17

Has there been any experimentation with redirecting window/sunroof air to the rear?

Views: 2,950

Posted By aerohead

redirecting

The lowest pressure on the car is in the windshield area/A-pillars.If you were to open a pathway from a window or sunroof to the rear of the car,the air from the wake would travel 'FORWARDs' into the...

Forum: Aerodynamics

03-14-2015, 10:40 AM

Replies: 17

Has there been any experimentation with redirecting window/sunroof air to the rear?

Views: 2,950

Posted By WD40

I experimented with this idea and it failed...

I experimented with this idea and it failed miserably, to the point it was bringing exhaust fumes into the car.
The biggest reason for the experiment is that the civic hatchback has very inadequate...

Forum: Aerodynamics

03-14-2015, 09:04 AM

Replies: 17

Has there been any experimentation with redirecting window/sunroof air to the rear?

Views: 2,950

Posted By Cd

I've wondered the same thing too. I did a really...

I've wondered the same thing too. I did a really sloppy CFD test with the sunroof open, and then later with the back windows and rear window down.

IIRC, all tests showed an increase in drag.
...

Forum: Aerodynamics

03-10-2015, 06:17 PM

Replies: 35

Sub-Cd 0.09 paradigm

Views: 8,560

Posted By aerohead

frontal area

The Litestar didn't go over.Aptera is dead on arrival.Loremo.The Corbin Sparrow,under different ownership is still kicking a little,but essentially a dead man walking.The upcoming little trike has...

Forum: Aerodynamics

03-07-2015, 04:34 PM

Replies: 35

Sub-Cd 0.09 paradigm

Views: 8,560

Posted By aerohead

Sub-Cd 0.09 paradigm

Here is Subaru's 1986 (6-model)(G) wind tunnel development model for the XT.
It measured Cd 0.088.
With the features drag of the 1999 GM Precept PNGV car,it would come in around Cd 0.095 on the...

Forum: Fossil Fuel Free

02-27-2015, 12:57 PM

Replies: 80

Third Conversion, ultra efficient (1993 Geo Metro EV)

Views: 31,204

Posted By EVmetro

Third Conversion, ultra efficient (1993 Geo Metro EV)

After doing a few conversions and doing a lot of research and developement, I came up with some good ideas to build something that is more efficient. This 1993 Metro was selected for its already...

Forum: EcoModding Central

06-25-2013, 05:01 PM

Replies: 393

Slow progress but progress (DIY two seater tadpole trike, 9hp Honda diesel)

Views: 140,974

Posted By user removed

Slow progress but progress (DIY two seater tadpole trike, 9hp Honda diesel)

http://ecomodder.com/forum/attachment.php?attachmentid=13308&d=1372194027

Here are some photos of my ongoing project two seater tadpole trike, considered a motorcycle in Virginia. The engine is a...

Forum: Aerodynamics

11-28-2011, 10:26 AM

Replies: 19

Another chopped car with better MPG: Metro convertible

Views: 20,806

Posted By MetroMPG

http://www.youtube.com/watch?v=62ynYqCCxdw

http://www.youtube.com/watch?v=62ynYqCCxdw

Forum: Aerodynamics

09-04-2011, 12:37 PM

Replies: 22

Simple Reduction of Drag due to the Wheels of Road Vehicles : Regert

Views: 7,740

Posted By autogyro

You almost nailed it. The air is drawn inward...

You almost nailed it. The air is drawn inward through the wheel, directed up and back over the top of the tire, pointing outwards, and then bent back, down and rearwards to jet out the back through...

Forum: Aerodynamics

09-25-2009, 03:05 AM

Replies: 35

Smooth Wheel Covers (velcro)

Views: 15,356

Posted By Luxbg

Smooth Wheel Covers (velcro)

I only have time to post this now, but before my NY trip last weekend I managed to cobble together some smooth wheel covers for the rear wheels of my Lancer. I wanted to do all 4 wheels, but ran out...

Forum: Aerodynamics

08-27-2008, 12:10 PM

Replies: 19

Another chopped car with better MPG: Metro convertible

Views: 20,806

Posted By MetroMPG

Another chopped car with better MPG: Metro convertible

Someone sent a link to this car...

http://www.explodingdinosaurs.com/2008electricdragin/choppedgeo/IMAGE_440thumb.JPG
...

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