Aerodynamic Questionne

Zauskycop · 02-17-2014, 05:31 PM

Well, I would say no. Consider your spring rates on the car and how many LBS of downforce those two vents may possibly create? I doubt enough to make any difference...at worst, they may allow more air UNDER the hood and create lift!

Tracy Ramsey

Shamu · 02-17-2014, 06:50 PM

What's the hamburger?

sixpax · 02-17-2014, 07:16 PM

Quote:

Originally Posted by Shamu

What's the hamburger?

the nissan emblem on the front fascia

SouthArk370Z · 02-17-2014, 07:34 PM

Interesting question; I hope some one can come up with an authoritative answer.

Since the raison d'etre of NACA ducts is to minimize disturbances in the air flow, my guess is that they won't make much difference. But "minimize" is a rather vague term, so maybe they will make a difference at track speeds. Guessing again, if they do make a difference, it seems the added resistance at the sloped front surface would create some down force. But I'm no aerodynamics engineer. I'm just here to see if my guesses are right.

sixpax · 02-17-2014, 07:42 PM

Quote:

Originally Posted by SouthArk370Z

Interesting question; I hope some one can come up with an authoritative answer.

Since the raison d'etre of NACA ducts is to minimize disturbances in the air flow, my guess is that they won't make much difference. But "minimize" is a rather vague term, so maybe they will make a difference at track speeds. Guessing again, if they do make a difference, it seems the added resistance at the sloped front surface would create some down force. But I'm no aerodynamics engineer. I'm just here to see if my guesses are right.

Thanks for sharing ... not sure if I even have a guess one way or the other, and like you, am no aerodynamics engineer. Just curious.

sixpax · 02-17-2014, 07:44 PM

Quote:

Originally Posted by Zauskycop

Well, I would say no. Consider your spring rates on the car and how many LBS of downforce those two vents may possibly create? I doubt enough to make any difference...at worst, they may allow more air UNDER the hood and create lift!

Tracy Ramsey

Creating lift under the hood probably is not a good thing ... but would they really ?

SouthArk370Z · 02-17-2014, 07:53 PM

Quote:

Originally Posted by sixpax

Creating lift under the hood probably is not a good thing ... but would they really ?

This has been discussed before (or very similar). Someone was asking about vented/ducted hoods. I don't remember anybody coming up with a definite answer. IIRC, someone said if the bottom aero plate is installed the air exits in the tunnel and shouldn't have a big effect. If you can't find the thread (I suggest using Google and putting "site:the370z.com " in front of your search terms), I may be able to find it in my subscriptions.

02-17-2014, 06:50 PM	#2 (permalink)
Shamu A True Z Fanatic Join Date: Jan 2011 Location: Nor Cal Posts: 1,059 Drives: 370Z Racecar Rep Power: 21	What's the hamburger? __________________ Grant

02-17-2014, 07:34 PM	#4 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324199	Interesting question; I hope some one can come up with an authoritative answer. Since the raison d'etre of NACA ducts is to minimize disturbances in the air flow, my guess is that they won't make much difference. But "minimize" is a rather vague term, so maybe they will make a difference at track speeds. Guessing again, if they do make a difference, it seems the added resistance at the sloped front surface would create some down force. But I'm no aerodynamics engineer. I'm just here to see if my guesses are right. sixpax likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

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02-17-2014, 05:31 PM	#1 (permalink)
Zauskycop Base Member Join Date: May 2011 Location: Hinckley IL Posts: 228 Drives: 2012 370Z, '16 Miata Rep Power: 16	Well, I would say no. Consider your spring rates on the car and how many LBS of downforce those two vents may possibly create? I doubt enough to make any difference...at worst, they may allow more air UNDER the hood and create lift! Tracy Ramsey