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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-30-2022, 02:21 AM   #1 (permalink)
EcoModding Lurker
 
Join Date: Sep 2022
Location: Antwerp, Belgium
Posts: 8
Thanks: 1
Thanked 17 Times in 6 Posts
Ford F150 - 25% drag reduction

Hi everyone,

using a 3D scan of the Ford F150 and a bunch of aerodynamic simulations, we demonstrated how the aerodynamic drag of a Ford F150 can be reduced by 25% - see this link:

  Reply With Quote
The Following 10 Users Say Thank You to wouterremmerie For This Useful Post:
aerohead (10-03-2022), COcyclist (06-16-2023), freebeard (09-30-2022), IRONICK (10-04-2022), Joggernot (10-03-2022), Logic (10-05-2022), MetroMPG (09-30-2022), Piwoslaw (09-30-2022), Thielsenmadam (06-04-2023), woodstock74 (10-23-2022)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-03-2022, 11:08 AM   #2 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,861
Thanks: 23,922
Thanked 7,207 Times in 4,640 Posts
'Cd 0.463'

Member AeroStealth owns a 2014 Ford F-150 Eco-Boost, Crew Cab, 6.5-foot bed,4X4 pickup.
Ford Motor Company published Cd 0.404 for this pickup.
AeroStealth purchased member Bondo's ( Brett Herndon ) Aerolid and Aerotail, both wind tunnel tested, courtesy of the Ford Motor Company.
With the two modifications, the F-150 was reduced to Cd 0.306. A 24.25% drag reduction.
While Ford Motor has never published an official drag coefficient for the current F-150, it seems unlikely that it's drag coefficient has 'increased' by 14.6% since 2014.
In his Master's Thesis of 2011 at Chalmers University, Martin Olsson reported that the Lattice Boltzmann Method ( LBM ) CFD used, produced a 13% discrepancy between wind tunnel tests of the same model.
Does AirShaper employ LMB?
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following User Says Thank You to aerohead For This Useful Post:
freebeard (10-03-2022)
Old 10-04-2022, 04:04 AM   #3 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,585
Thanks: 2,872
Thanked 1,121 Times in 679 Posts
@wouterremmerie : Great to have you here !
I'm the one that suggested that you visit the forums here.
A very, very warm welcome to you.
  Reply With Quote
Old 10-04-2022, 12:07 PM   #4 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,561
Thanks: 7,736
Thanked 8,554 Times in 7,041 Posts
I PMed the OP. Haven't heard back or seen a third post.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 10-05-2022, 05:41 AM   #5 (permalink)
EcoModding Lurker
 
Join Date: Sep 2022
Location: Antwerp, Belgium
Posts: 8
Thanks: 1
Thanked 17 Times in 6 Posts
Quote:
Originally Posted by Cd View Post
@wouterremmerie : Great to have you here !
I'm the one that suggested that you visit the forums here.
A very, very warm welcome to you.
Ah, thanks a lot for the tip, happy to be here!
Great place to discuss real improvements / real gains in terms of aerodynamics - cool community!
  Reply With Quote
Old 10-05-2022, 05:43 AM   #6 (permalink)
EcoModding Lurker
 
Join Date: Sep 2022
Location: Antwerp, Belgium
Posts: 8
Thanks: 1
Thanked 17 Times in 6 Posts
Quote:
Originally Posted by freebeard View Post
I PMed the OP. Haven't heard back or seen a third post.
Hi Freebeard,

sorry, new to this forum, you mean I should post more regularly to prove I'm not a bot / simply spamming?

Happy to answer any questions you may have - I'm real
  Reply With Quote
The Following User Says Thank You to wouterremmerie For This Useful Post:
freebeard (10-05-2022)
Old 10-05-2022, 05:48 AM   #7 (permalink)
EcoModding Lurker
 
Join Date: Sep 2022
Location: Antwerp, Belgium
Posts: 8
Thanks: 1
Thanked 17 Times in 6 Posts
Quote:
Originally Posted by aerohead View Post
Member AeroStealth owns a 2014 Ford F-150 Eco-Boost, Crew Cab, 6.5-foot bed,4X4 pickup.
Ford Motor Company published Cd 0.404 for this pickup.
AeroStealth purchased member Bondo's ( Brett Herndon ) Aerolid and Aerotail, both wind tunnel tested, courtesy of the Ford Motor Company.
With the two modifications, the F-150 was reduced to Cd 0.306. A 24.25% drag reduction.
While Ford Motor has never published an official drag coefficient for the current F-150, it seems unlikely that it's drag coefficient has 'increased' by 14.6% since 2014.
In his Master's Thesis of 2011 at Chalmers University, Martin Olsson reported that the Lattice Boltzmann Method ( LBM ) CFD used, produced a 13% discrepancy between wind tunnel tests of the same model.
Does AirShaper employ LMB?


Hi Aerohead,

no, we use a finite volume method:
this has been the default method for decades, although I do believe LBM could be (one of) the winning methods for the future.

Regarding drag values:
without discrediting the manufacurers, the claimed values are usually fairly optimistic (as they sometimes play with ride heights, rims, aircon settings, etc during testing).

We performed an independent validation on a Tesla Model Y together with one of our partners - our Cd value was less than 6% off compared to the measured value. And qualitative data (the flow structure behind the car) also showed good correlation:
airshaper.com/blog/tesla-model-y-aerodynamic-benchmarking

I would agree drag hasn't increased by 14%, so it's likely more a matter of comparing the right data here. Data coming from different sources and/or different measuring techniques (tunnel vs simulation) can blur the whole story.
  Reply With Quote
The Following 2 Users Say Thank You to wouterremmerie For This Useful Post:
aerohead (10-06-2022), IRONICK (10-05-2022)
Old 10-05-2022, 12:05 PM   #8 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,561
Thanks: 7,736
Thanked 8,554 Times in 7,041 Posts
Quote:
sorry, new to this forum, you mean I should post more regularly to prove I'm not a bot / simply spamming?
No, it was more that some new posters never get past one or two posts. 'Hit and run'.

I look forward to where the conversation goes.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 10-05-2022, 02:42 PM   #9 (permalink)
EcoModding Lurker
 
Join Date: Sep 2022
Location: Antwerp, Belgium
Posts: 8
Thanks: 1
Thanked 17 Times in 6 Posts
Quote:
Originally Posted by freebeard View Post

I look forward to where the conversation goes.
Yeah me too!
  Reply With Quote
Old 10-05-2022, 03:47 PM   #10 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,561
Thanks: 7,736
Thanked 8,554 Times in 7,041 Posts
Where to start?

Does or could Airshaper benefit from OpenVDB? I think it and an AI interface like Stable Diffusion as a front end show the most promise.

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Reply  Post New Thread


Tags
aerodynamics, f150, ford, pickup

Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com