04-22-2009, 11:23 PM
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#36 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Wow. Looks impressive.
Any chance you can tuft test it? That will tell you for sure what's going on.
I hate to "armchair design" someone else's work, but I have a sneaking suspicion that the slope of the top may be a bit steep - you need to ensure you've got flow reattachment (it would have detached at the trailing edge of the roof) before you can start your tapering.
While the shape of the sides may be OK, if the angle on the top and bottom surfaces is too steep, vortices may also be forming there. The sharp angle at the transition from "side" to "top" (and "bottom") would contribute to that effect.
Tuft testing will tell all!
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