View Single Post
Old 07-18-2012, 06:29 PM   #20 (permalink)
Sven7
Master EcoModder
 
Sven7's Avatar
 
Join Date: Aug 2011
Location: Warren, MI
Posts: 2,456

Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
Thanks: 782
Thanked 669 Times in 411 Posts
Quote:
Originally Posted by baldlobo View Post
sven7; are you familiar with Bernoulli's principle?, my jeeps underside isn't flat like a car's is.

the abridged version is longer distance around lowers static pressure and increases dynamic pressure, there's a higher pressure in the bubble under the jeep, the air going down the skid would accelerate, creating a boundary layer. lift, i think suction would be more likely; that's if you take away the side wakes, and gusts of wind.
High pressure under the car means lift. It's like a stationary fan blade pushing air down. Better than bare axles, etc. but not as good as an aero undercarriage. Anyway, glad to hear the smooth surface is working out.
__________________
He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
  Reply With Quote