Quote:
Originally Posted by Logic
Quite so freebeard, so I'm wondering how much of the flow that normally exits under the car would be vacuumed out through the roof vent and what it would do to/for aero and the unwanted lift..?
In a race rally car, where noise and heat are a secondary concern, they could blow the engine exhaust out through specially enlarged A-pillars.
It'd be interesting to know how that would work!?
Is there any freeware, you're aware of that does this kind of simulating?
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The air flowing towards the A-pillars is in an 'favorable' pressure regime, with zero hindrance to attached flow.
If you wanted to 'improve' aerodynamics, you'd place your 'extractor' somewhere in the rear of the vehicle, where it's 'jet' could enhance flow attachment, or dilute the wake.
The last two of the Ford Probe concept cars did this. As did GM's Precept concept. And Ferrari's FXX full-race coupe, with intermittent, forced-air, 'blown' wake.
Remember though that, even if you have full-power exhaust 'thrust', it does you no real good unless your at 250-mph, or above. You need to be in a 'compressible-flow' environment.