View Single Post
Old 11-16-2015, 05:34 PM   #15 (permalink)
aerohead
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
tunnel air speed

I don't have my calculator,but I'm thinking that at 40%-scale,they'd run about 50-mph airspeed to simulate 20-mph at full-scale.Otherwise the Reynolds number wouldn't be high enough to transition the boundary layer.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following 2 Users Say Thank You to aerohead For This Useful Post:
freebeard (11-16-2015), NeilBlanchard (11-17-2015)