Nissan 370Z Forum - Aerodynamic Questionne

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Quote:

Originally Posted by sixpax (Post 2696581)

I am wondering if two naca type ducts in the front fascia, to the right and left of the hamburger, would force the nose up a little or down a little at straightaway speeds ... not wondering about braking, the nose goes down fine under braking ... just wondering at full bore pedal to the metal going straight.

What is your intended purpose wanting to add these? More air to the aftermarket intakes or just more air to the upper portion of the radiator?

Quote:

Originally Posted by ValidusVentus (Post 2704506)

Honestly, I think it will do two very small things aerodynamically. Add a bit of drag from disruption of airflow and air passing through the vehicle in some manner rather than over the surface of it, which is lower drag (like all openings in the front of vehicles - hence the active shutter tech we are starting to see) and probably yes, create a bit of net lift: A few hands widths back from the top leading edge of the front end (and extending backwards maybe half the hood- depending on design) is a low pressure area -taken advantage of by the draw out vents you see in the hoods of many race vehicles (the new viper GTS Rs spring to mind) these vents actively suck air through the heat exchangers at the front of the vehicle and reroute most of the air that would have to find its way out of the engine compartment by other means all while creating drag- ...reroutes it back over the vehicle and in this way also increases the airflow to the rear wing. But area in front of that is a high pressure area pushing down on the angled surface of the bumper and if you remove some of that surface area...

Both of these effects would be very minimal to the point of arbitrary in your case.

Anyway, thats my analysis and :twocents:

Edit/correction: The low pressure area over the hood actually starts AT the top leading edge of most vehicles. So its entirely possible that the area you are proposing putting those ducts is a LOW pressure area :stirthepot:

^This. Short answer, very minor effects that can be ignored.

Degrees in aerospace engineering and mechanical engineering :tiphat:

Quote:

Originally Posted by Dustin@Z1 (Post 2711006)

What is your intended purpose wanting to add these? More air to the aftermarket intakes or just more air to the upper portion of the radiator?

Well that would be an added benefit, but primarily was wondering if it would help keep the nose down ... while I might still add them, I have since turned focus to some sort of dual dive plane at each corner with a partial splitter or a dive plane/canard deal ... adding a 69" Kognition wing to the rear so needing some downforce on the front to offset imaginary fat guys riding on the decklid at higher speeds ...

Quote:

Originally Posted by KramChaos (Post 2711119)

^This. Short answer, very minor effects that can be ignored.

Degrees in aerospace engineering and mechanical engineering :tiphat:

:iagree: Agreed on minor effects. My inquisitive mind and stupidity seldom allow me to ignore much that I haven't actually tried first. :tup: