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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-20-2011, 03:38 PM   #11 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,762

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,585
Thanked 3,555 Times in 2,218 Posts
I haven't any evidence but I'd think dividers could actually help aero by blocking strong crosswinds from, oh, 250-340 degrees.

__________________


  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-20-2011, 07:12 PM   #12 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,335
Thanks: 24,453
Thanked 7,394 Times in 4,789 Posts
dividers

In these parts,they go up as soon as there are traffic fatalities due too head-ons.
Some have glare-fences atop to aid with night time visibility.
As Frank has mentioned,they can help with gusts and crosswind,especially with high-profile vehicles.
They have tripped high-C.G.SUVs,causing rollover and spinal cord injuries,if not death,so they're not a fix-all.
I'd rather live with,than without.Jmo.
  Reply With Quote
Old 07-21-2011, 01:17 AM   #13 (permalink)
Master EcoModder
 
larrybuck's Avatar
 
Join Date: Apr 2011
Location: sw Washington (state), a little north of Vancouver
Posts: 1,154
Thanks: 298
Thanked 122 Times in 88 Posts
It would seem to me that if you were equal distance between 2 long unbroken walls, that aero wise it would point the just moved air into a more controlled rear vortex if you will.

A heavily traffic-ed tunnel would provide a consistent headwind, and wouldn't that be preferable to random side winds?


I could see only one wall as being "dirty". Yet beyond the racing line shorter distance issue, picture a last lap hard run by #2 trying to catch #1 and pass him.

Most of these scenes are happening at 185-214 mph. with one wall that they almost touch. Granted we don't go at those speeds, but if it makes the air that dirty, wouldn't they pick a line further from the wall?

I see this can of worms growing as most tracks also have different rates of banking up to their walls. Would a high rate of banking erase dirty side pressure?

Remember, many times these guys are 1-2"'s away from these walls lap after lap!

Also at higher speeds, drag racers, and Bonneville racers often put front to back stabilization runners (like giant old fashioned car rain gutters) Wouldn't equal spaced walls facilitate aft flow IF you were the 1st car in dead air?

This is quite the interesting conversation! Also currently, because of their usual mostly left turns, many of you have noticed a stabilization bar as described above positioned on the left rear , just aft of the rear window!
  Reply With Quote
Old 07-21-2011, 01:18 AM   #14 (permalink)
Master EcoModder
 
larrybuck's Avatar
 
Join Date: Apr 2011
Location: sw Washington (state), a little north of Vancouver
Posts: 1,154
Thanks: 298
Thanked 122 Times in 88 Posts
It would seem to me that if you were equal distance between 2 long unbroken walls, that aero wise it would point the just moved air into a more controlled rear vortex if you will.

A heavily traffic-ed tunnel would provide a consistent headwind, and wouldn't that be preferable to random side winds?


I could see only one wall as being "dirty". Yet beyond the racing line shorter distance issue, picture a last lap hard run by #2 trying to catch #1 and pass him.

Most of these scenes are happening at 185-214 mph. with one wall that they almost touch. Granted we don't go at those speeds, but if it makes the air that dirty, wouldn't they pick a line further from the wall?

I see this can of worms growing as most tracks also have different rates of banking up to their walls. Would a high rate of banking erase dirty side pressure?

Remember, many times these guys are 1-2"'s away from these walls lap after lap!

Also at higher speeds, drag racers, and Bonneville racers often put front to back stabilization runners (like giant old fashioned car rain gutters) Wouldn't equal spaced walls facilitate aft flow IF you were the 1st car in dead air?

This is quite the interesting conversation! Also currently, because of their usual mostly left turns, many of you have noticed a stabilization bar as described above positioned on the left rear , just aft of the rear window!

  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com