View Single Post
Old 08-22-2013, 03:26 PM   #168 (permalink)
christofoo
Master EcoModder
 
christofoo's Avatar
 
Join Date: Mar 2012
Location: Salt Lake City
Posts: 292

00C - '00 Toyota Corolla
90 day: 43.54 mpg (US)
Thanks: 147
Thanked 190 Times in 73 Posts
Re-tufting the lid-top radius, view of the underside

I wanted to get a better view of the effect of the box lid-top radius, this time I added a piece of cardboard over the foam to recreate a sharp edge with the same tangents as the radius version, that way I don't have any change in gap size as a confounding factor.

I think this best fits the null hypothesis - radius at reattachment does not attenuate the locked vortex. (I can't wait for kdenlive to get image stabilization, youtube's stabilization doesn't recognize stills. EDIT; actually kdenlive does have stabilization - just a little counter-intuitive.)

It's nice to get this detail sorted out before fab. What this means to me overall is that the version most worth building should close the gap as much as possible. Also there's no point aerodynamically in rebuilding the box lid. Also for icy weather I may need to have heater lines in the rear window (since the alternative, a removable window, would open up a large gap and potentially negate the aerodynamics of the Kamm section).

There's also a better view of the underside at the end of the vid. To me it looks like it's begging for a belly-pan and wheel treatment.

Last edited by christofoo; 08-27-2013 at 01:37 PM..
  Reply With Quote
The Following 2 Users Say Thank You to christofoo For This Useful Post:
aerohead (08-24-2013), PaleMelanesian (08-23-2013)