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Old 03-02-2015, 06:04 PM   #11 (permalink)
aerohead
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pressurizes?

Yep,the diffuser is like a two-dimensional diverging nozzle,where the fluid (air) is decelerated,building back static pressure as it travels,such that it imparts this higher pressure to the wake,raising its base pressure,and lowering the pressure drag (largest component of a vehicles drag).

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