Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-14-2013, 04:13 PM   #51 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 3,497
Thanks: 17
Thanked 2,267 Times in 1,581 Posts
Chevy Volt’s Coefficient of Drag is 0.28, Beats Prius and Insight
Chevy Volt’s Coefficient of Drag is 0.28, Beats Prius and Insight

Quote:
“The Prius came in at .30,” said Boniface. “That was a number that was verified in our tunnel, in Chrysler’s tunnel, and in Ford’s tunnel.”
“The Insight was 0.32, and the Volt was .28,” he said.
“I’d like to test the Volt in the same tunnel where Toyota got their 0.25 value,” he teased.
2008 Nissan GT-R - Wind Tunnel 2 - 1280x960 - Wallpaper
http://www.seriouswheels.com/2008/no...2-1280x960.htm


http://www.seriouswheels.com/2008/no...1-1280x960.htm

__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html

Last edited by kach22i; 09-14-2013 at 04:21 PM..
  Reply With Quote
The Following User Says Thank You to kach22i For This Useful Post:
aerohead (09-14-2013)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-14-2013, 04:25 PM   #52 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 3,497
Thanks: 17
Thanked 2,267 Times in 1,581 Posts
Rocket Car Design Project


Corvette Wind Tunnel Testing Photo 6

__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
  Reply With Quote
The Following User Says Thank You to kach22i For This Useful Post:
aerohead (09-14-2013)
Old 09-14-2013, 04:27 PM   #53 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 3,497
Thanks: 17
Thanked 2,267 Times in 1,581 Posts
Artega GT preview
Artega GT preview - Car Body Design

Quote:
The exterior was designed by Henrik Fisker.
http://www.baltimoresun.com/business...7.photogallery

Quote:
Smoke visualization
( Lloyd Fox/Baltimore Sun / January 26, 2012 )
Alex Ratushny a student and co-op at the wind tunnel, runs the smoke visualization test on the G2. The G2, a new plug-in electric hybrid automobile designed by Rockville-based Genovation Cars Inc. will be tested at the University of Maryland's Glenn L. Martin Wind Tunnel. Designed to be one of the most aerodynamic cars on the market, the G2 will be tested under varying wind and weight conditions to simulate real driving.
Nissan GT-R windtunnel test
http://theblogofcars.com/2010/10/nis...r35_101018-23/
__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html

Last edited by kach22i; 09-14-2013 at 04:33 PM..
  Reply With Quote
The Following User Says Thank You to kach22i For This Useful Post:
aerohead (09-14-2013)
Old 09-14-2013, 04:49 PM   #54 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 3,497
Thanks: 17
Thanked 2,267 Times in 1,581 Posts
http://ecomodder.com/forum/showthrea...w-16607-5.html

__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
  Reply With Quote
The Following User Says Thank You to kach22i For This Useful Post:
aerohead (09-14-2013)
Old 09-15-2013, 12:56 PM   #55 (permalink)
EcoModding Lurker
 
Join Date: Sep 2013
Location: Indianapolis / Chicago
Posts: 27

cfdguy - '13 VW Golf TDI
Thanks: 6
Thanked 18 Times in 7 Posts
Smoke trails in windtunnels are only for looks and do not serve much for real visuals. The problem with smoke trails is that the only way you can see them is when the airflow is low. If the airflow is higher/normal, the smoke would distribute very quickly.
  Reply With Quote
Old 09-15-2013, 02:28 PM   #56 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 16,226
Thanks: 4,270
Thanked 5,461 Times in 4,351 Posts
Quote:
Smoke trails in windtunnels are only for looks
That's why florescent green smoke is best.

Look at that 1/43rd scale model VW with the reverse rake of a stock VW. If you hold a straight edge up to the screen, level up to the centers of the hubcaps and slide it straight up, you'll see that the streamlines over the top of the roof descend below that height only as they reach the vicinity of the back bumper.

I like bubbles


I went looking for a picture with florescent green smoke bubbles underwater, but what I found instead was a trove of ontopic stuff posted by aerohead in 2009!

http://ecomodder.com/forum/showthrea...tml#post148833

  Reply With Quote
Old 09-15-2013, 10:06 PM   #57 (permalink)
Master EcoModder
 
Join Date: May 2009
Location: New Jersey
Posts: 389

2003 Ninja EX250 - '03 Kawasaki Ninja EX250
90 day: 78.57 mpg (US)

Saturn - '99 Saturn SL1 Base
90 day: 47.27 mpg (US)
Thanks: 25
Thanked 58 Times in 37 Posts
I get annoyed when so much focus is on the front of the car in wind tunnel videos and images. While smooth flow from the front is important, what happens after detachment behind the car is where it really counts.
__________________
Doing my part to reduce dependence on OIL
Doing my part to reduce congestion
And enjoying it!

If you have to use your brakes, you are driving too fast!

My 101.5 MPG 2003 Kawasaki Ninja 250




Crude Oil Price Today
  Reply With Quote
Old 09-16-2013, 12:24 AM   #58 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 16,226
Thanks: 4,270
Thanked 5,461 Times in 4,351 Posts
I think the dust streaming off the back of the front wheel on ol' #3 is great.

The streams onto the front are photogenic and people are too [insert lame excuse here]. I think if the camera is fixed relative to the vehicle and the smoke was videoed for a while, that could be blurred into a low-contrast composite. Then that could be run though a high contrast filter. I think structures in the wake would pop right out. A little 'bullet-time' magic and you could have a fly-around of the vehicles wake. Sort of an analog faux-CFD animated GIF.
  Reply With Quote
Old 09-16-2013, 08:30 AM   #59 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 3,497
Thanks: 17
Thanked 2,267 Times in 1,581 Posts
Quote:
Originally Posted by freebeard View Post
..........., but what I found instead was a trove of ontopic stuff posted by aerohead in 2009!

http://ecomodder.com/forum/showthrea...tml#post148833
That is a great find, I looked for something like that before I started this thread but somehow it did not turn up.
__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
  Reply With Quote
Old 09-16-2013, 04:26 PM   #60 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 16,226
Thanks: 4,270
Thanked 5,461 Times in 4,351 Posts
That's why I don't mind poking around in Google Images and elsewhere—the stuff you find incidentally. This is closer, but still not the one I was looking for:

Also, in the sidebar for that one:

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com