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Old 12-17-2008, 02:15 PM   #16 (permalink)
aerohead
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cowl area

Quote:
Originally Posted by Christ View Post
SO... since there is high pressure at the windshield, could you make ducting inside the hood's framework to duct that high pressure air back to the front of the radiator, then let it dissipate into the low-pressure area under the hood behind the radiator?

Low flow volume would be the only real concern there, I'd think. And it should be pretty easy to duct your hood, but with the negative volume area under the hood, due to the flow under the car pulling with no non-turbulent inlets, it should create enough flow to aid in cooling, no?

Just a thought.
While the pressure at the windshield cowl is relatively high,it is not as high as at the forward stagnation point of the car.NASCAR uses the cowl area for engine induction air,as when drafting,there's virtually no pressure against the front of the car and they'd be losing ram air,however,there is some pressure at the cowl.The pressurized cooling system offers a "buffer" against melt-down during drafting,and you may see team crews either adding or removing duct-tape from the "grille" to tailor engine temp during the race.Funny-Cars may have the bug-catcher for the blower protruding right through the windshield,however,they are usually elevated above the cowl deck.actually "lead" the windshield,and the scoop itself provides the stagnation.----------------- My opinion is that for aero optimization we should stick with the front of the car.
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