04-29-2017, 12:57 PM
|
#621 (permalink)
|
|
Master EcoModder
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,883
Thanks: 23,957
Thanked 7,219 Times in 4,646 Posts
|
540k
Quote:
Originally Posted by redneck
.
1937/38 Mercedes Streamliner, the 540K Stromlinier
Go to 37:00 in video to see wind tunnel and smoke.
> |
In the video somewhere,they mention measuring Cd 0.36 and change for this car,which would have been quite good back in the day. 
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
04-30-2017, 09:44 AM
|
#622 (permalink)
|
|
Master EcoModder
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
|
|
|
|
|
|
The Following User Says Thank You to kach22i For This Useful Post:
|
|
|
05-06-2017, 01:31 PM
|
#623 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,665
Thanks: 7,767
Thanked 8,575 Times in 7,061 Posts
|
I'd previously mentioned Open VDB and what it portends. Now a SIGGRAPH preview reel pointed me to:
My current understanding of Clebsch Maps is that they represent the normals to the direction of flow. One point of interest, the Delta Wing Data Set, at 1:42, suggests that vortexes are not open-ended but are loops closed at the diffuse end (shown in the thumbnail).
Se also Fluid Processing at 0:56. |
|
|
|
|
The Following 2 Users Say Thank You to freebeard For This Useful Post:
|
|
|
05-09-2017, 08:43 AM
|
#624 (permalink)
|
|
Master EcoModder
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
|
I've probably neglected the underbody in this tread.
Found this:
https://www.audi-technology-portal.d...tics/underbody
Quote:
|
A car produces 40 to 50 percent of its total aerodynamic drag in and around the underbody, the wheels and the wheel arches..........
|
Click link above to see video.
<iframe width="560" height="315" src="https://www.audi-technology-portal.de/video/261" frameborder="0"></iframe>
Last edited by kach22i; 05-09-2017 at 09:12 AM..
|
|
|
|
|
The Following 2 Users Say Thank You to kach22i For This Useful Post:
|
|
|
05-09-2017, 09:10 AM
|
#625 (permalink)
|
|
Master EcoModder
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
|
https://mercedes-benz-blog.blogspot....s-emotion.html
.jpg)
.jpg)
Quote:
"This means that the CLA-Class is more streamlined than any other vehicle. .................
When it comes to compact cars like the new A-Class (2012, Cd = 0.26), coupés such as the E-Class Coupé (2010, Cd = 0.24), saloons such as the E-Class (2009, Cd = 0.25), sports cars like the SL (2012, Cd = 0.27) and SUVs like the M-Class (2011, Cd = 0.32), vehicles in these segments have never before achieved such low Cd figures. The new S-Class is set to continue this trend.
|
|
|
|
|
|
The Following User Says Thank You to kach22i For This Useful Post:
|
|
|
05-14-2017, 08:56 AM
|
#626 (permalink)
|
|
Master EcoModder
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
|
Youtube video, Ford GT in wind tunnel at the Allen Park facility.
|
|
|
|
|
The Following User Says Thank You to kach22i For This Useful Post:
|
|
|
05-20-2017, 12:53 PM
|
#627 (permalink)
|
|
Master EcoModder
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,883
Thanks: 23,957
Thanked 7,219 Times in 4,646 Posts
|
smoke
Quote:
Originally Posted by kach22i
Youtube video, Ford GT in wind tunnel at the Allen Park facility.
|
They were careful not to give away any useful information.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
|
|
|
|
|
05-20-2017, 06:48 PM
|
#628 (permalink)
|
|
Master EcoModder
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
|
|
|
|
|
|
The Following User Says Thank You to kach22i For This Useful Post:
|
|
|
05-20-2017, 07:13 PM
|
#629 (permalink)
|
|
Master EcoModder
Join Date: Dec 2014
Location: Butte, Montana
Posts: 725
Thanks: 208
Thanked 427 Times in 278 Posts
|
https://youtu.be/H_JbxcTvqUk
Ford F-150 front corners and tailgate Duck Tail explained .
At least the wide top. But no info on the duck butt pooch on the vertical part.
__________________
1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20
Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg
|
|
|
|
|
The Following User Says Thank You to gumby79 For This Useful Post:
|
|
|
05-21-2017, 12:58 PM
|
#630 (permalink)
|
|
Master EcoModder
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
|
Quote:
Originally Posted by gumby79
https://youtu.be/H_JbxcTvqUk
Ford F-150 front corners and tailgate Duck Tail explained .
At least the wide top. But no info on the duck butt pooch on the vertical part.
|
Yea, I noticed the little Gurney Flap/Wickerbill on the tailgate ledge top.
Gotta wonder how well those things are going to wear under abusive work conditions.
|
|
|
|
|
