Quote:
Originally Posted by aerohead
The base pressure is affected by local pressure along it's entire separation line defining perimeter.
If a portion of that perimeter experiences an excursion upstream ( like over the boot ), due to separation there, or upstream, then that low pressure column of air will be affecting the overall base pressure. And that column of air WILL be affected by the pressure above the separation line creating it.
Since vortex-drag is the highest form of drag, should it also be present, then it will impact the overall drag. It would be manifested in a higher Cd.
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You seem to be back to talking about early separation. I am talking about cars with attached flow - that's nearly all of them.
And you've not explained how what you say is supported by the pressure plots I've given you in the above posts.
So I'll assume that this is all just another Aerohead theory.
I certainly couldn't find anything that appeared to support it in my references. (I had a long look because if this theory were correct, it would make certain things very easy. But it doesn't appear to be.)
Some cars have pressures on their panels just before separation that match wake pressures, but a lot do not.
And, can I say: why not actually look at the tech paper I've cited in Post #1 and reflect on its implications for some of your theories?