Quote:
Originally Posted by Cd
MeanJoe, I'm looking at that roofline on the hot rod in the post above yours. The flow certainly seems to be attached - despite the vertcal windshield.
I never would have expected this :0
I see what you mean about the pressure changes upstream . At the base of the windshield, the air is swirling and creating a smooth flow for the approaching air which slips above it ( It is " getting out of the way"as you say. )
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Cd,if you had a photo of the hot rod from the side,you would see that the body has a little "rake",where the nose is dropped in relation to rear.That would have the top of the roof "leaning" into the oncoming air and in a positive pressure gradient.As long as the air isn't tripped at the windshield header,it continues to be rammed onto the roof.