Quote:
Originally Posted by ChazInMT
I have read through the sticky's. Have you read this?
Aero Testing Porsche 993 & New Beetle, AutoSpeed
It is what I'm basing my thoughts on, please tell me where they are wrong in this article so we can discuss it. Otherwise what I'm putting up is solid thinking. What I'm saying explains both why flow is attached on the New Beetle and why the "Ideal Aero Template" is still 100% valid as the shape we all want to be in. Flow looks attached on the New Beetle (don't know a darn thing about the Old Beetle). If flow is attached on this New Beetle shape, you have to admit that the current "Hive Thinking" in this forum needs to be examined. |
Chaz,I have no explanation for the orientation of the tufts.I wish they'd set off a smoke-bomb attached to the car's rear.
Historically,there has never been a car built which can maintain attached flow at exit angles beyond 22-degrees.
My suspicion is that there are vortices,well formed,on each side of the roof/greenhouse,which may explain the tufts.
As to the lift,that will be a function of the low pressure associated with the separated flow acting upon the top surface of the rear slope and higher pressure,slower air under the car.
If you'll check out the 'FLOW-IMAGES' thread you see some examples of separation and wakes.
Stores closing gotta go,will catch up,Phil.