A&Q about 350Z
Q:
Hey, Which areas on a car's body develop the greatest air pressure?(like for example the air flowing over the top of the car has high pressure)
A:
The very nose of the car and the base of the windshiel have the highest pressures. The air flowing over the top of the car has some of the lowest pressures.
Reasons?
The air that has the highest pressure has the lowest velocity. The air with the lowest pressure has the highest velocity.
A:
Agreed with Lotus... another potential area of high pressure is at the top of the windshield. You need to test it and it has to be before the roof breaks away, but sometimes you get some high pressure there.
In general the grille is the highest pressure. Sometimes the cowl (base of the windshield) is higher pressure than the grille but it bears testing on each individual car.
A:
o, what about the lower sides of the car, is any high pressure down there?
A:
Hopefully not. Designers go to great lengths to make sure there is LESS pressure under the car so you don't take off like a plane at 70 mph
A:
true, but I meant the sides of car, the sides would have high pressure air flowing across them too right? because then why would Ferrari use the sides for engine intake air in the F50, and Enzo
A:
Yes, but they've expended hundreds of thousands of dollars on D&D designing scoops and aerodynamically testing and building specific areas of the car. The 2-foot scoops don't hurt either
Basically what I think we're trying to say is that every car is vastly different. Ever own a car that blasts you with air when you open the window, then ridden in one that didn't have much air coming in at all? I have one right now that actually sucks air OUT the window enough to blow my long hair out the window.
A:
Im am not saying this trying to be a jerk or anything, but you ask an aweful lot of these questions. Thats not a bad thing and i realize that that is what this forum is for. I do think, however, that you should try to do a little more reasearch into what makes air do certain things. Like, what shapes make air move faster or slower and learn about Bernouli's principal and his research. Get some books and search on the internet and i think you will find much more in depth and application-precise answers to your aerodynamic questions.
This is another thread as to why there should be an aero specific forum on here.
A:
^^^ I like the way you think. But he just says I'm an ass when I tell him that too.
A:
lol, I'll try to stop. An aerodynamics forum would be a good addon though
A:
Hey, with as slow as the eng/tech forum has been the past few months I'm starting to think I should leave spam around just for something to talk about
A:
I think you should just start posting articles about whatever you can Curtis. you obviously know quite a bit and i would like learn some of it but i cant ask questions about things i dont know about.
I would like to see some more aerodynamic posts with pics and i would like to see them in an aerodynamic specific forum but as you said the engineering/tech forum has been very slow lately. I liked that quy who was posting articles about automotive design.
Also if anyone would like to paraphrase anything they find in any of those chassis/suspension/race car design books for those of us who always forget the names of the books when they go to the book store, that would be great too.
I started a very general post in the forced induction forum a while back just to get some conversation going about various things but it didnt take off like i had hoped. however i wouldnt mind seeing something like that in here about aero or suspension or chassis design.
A:
btw wtf is the silent chamber all about? I mean the name and artsy pictures in sigs.
also i think you spelled "say" as "sat" in the sig you have now.
A:
yea that's true the engineering forum has been abit slow lately. Want anymore spam to talk about? because I was thinking about those "sliding skirts" that were used on the Renault RE-20
A:
I'm about more than you could ever possably imagine. No typos.