View Single Post
Old 08-08-2009, 05:10 PM   #39 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 12,117
Thanks: 19,432
Thanked 6,143 Times in 3,777 Posts
low fineness-ratio tuft study

Al helped me export a photo of the T-100 undergoing a tuft study to illustrate attached flow at low fineness ratio,something the template suggests as a "minimum" roofline curvature which still guarantees no separation.---------------------- The photo was taken by friends a couple years ago,on LOOP 288,Eastbound from FM 2164 at 60-mph.----------------------------- As you can see from the image,while there IS some lateral flow along the flanks,the flow is clean as the flow exits the body.Kamm's car had this "spanwise" lateral flow,which while not ideal,is nevertheless attached,and further aft,can deliver energy to the wake for pressure recovery.NOTE: the boattail becomes the basis for the articulated gap-fillers with the trailer project,providing for continuous flow to the trailer tail.
Attached Thumbnails
Click image for larger version

Name:	HPIM0577.jpg
Views:	30409
Size:	91.9 KB
ID:	3983  
  Reply With Quote
The Following User Says Thank You to aerohead For This Useful Post:
khafra (07-01-2011)