View Single Post
Old 07-24-2008, 08:53 PM   #125 (permalink)
adrive7
EcoModding Lurker
 
adrive7's Avatar
 
Join Date: May 2008
Location: DC Metro
Posts: 48

Ranger - '08 Ford Ranger XL
90 day: 20.73 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to adrive7
Quote:
Originally Posted by tjts1 View Post
Why are we using 2,500,000?
Because I said so apparently. But I said so because it is about right for an automobile. All that really matters is that the Re is in the millions range. Variations within that range shouldn't affect the flow.

But if you want a more official source,

The Reynolds number

As for the white area, the flow needs some room to develop before it hits your car. Otherwise you will get bad results.
__________________
Ohio State Baja SAE
  Reply With Quote