New camaro in a wind tunnel (video) - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

LS1_Alex · 10-25-2007, 09:07 PM

Hopefully not a repost. Accidentally caught it on the science channel while flipping channels. Sorry for the low quality pics. Found a video on the internet as well.

Video

Click here to see Video

Kenz Camaro · 10-25-2007, 09:35 PM

Very cool! I hadn't seen that!

stevenm357 · 10-25-2007, 11:00 PM

AWESOME thanks for the post!

*DGthe3* · 10-25-2007, 11:44 PM

Nice. I like the bit about computational fluid dynamics at the end. Too bad its not going to be able to simulate a car very well for quite a while though. The shape is too complex and the resulting flow is too turbulent. I've done some engineering simulations on my computer for school, mainly stress analysis, and it puts a crazy load on the computer to do a low quality simulation. And that is for conditions that are easily understood. Fluids are extremely unpredictable.

Anyway, very cool video

Jak · 10-26-2007, 08:13 AM

Cool post, thanks. Did you check out the other vids they had on the Camaro? Loved the one when they started it up and reved the engine, I hope GM puts that exhaust on all the camaros.

wildpaws · 10-26-2007, 08:36 AM

Quote:

Originally Posted by DGthe3

Nice. I like the bit about computational fluid dynamics at the end. Too bad its not going to be able to simulate a car very well for quite a while though. The shape is too complex and the resulting flow is too turbulent. I've done some engineering simulations on my computer for school, mainly stress analysis, and it puts a crazy load on the computer to do a low quality simulation. And that is for conditions that are easily understood. Fluids are extremely unpredictable.

Anyway, very cool video

They must be able to get some useful data with cfd, almost all the NASCAR teams are using it now.
Clyde

*DGthe3* · 10-26-2007, 10:43 AM

Yes, I know that it is used but I don't believe that they can get as good of data as they can from a wind tunnel. They can get a rough idea and a good visualization. Wind tunnel testing is still used very extensively because it gives very accurate results. When I took fluid dynamics my prof told us that turbulent flow is fairly simple to analyze but amlost impossible to predict. A racecar will have fairly smooth (laminar) flow over most of the car. The calculations are much simplier but it still takes alot to calculate. A production car isn't as sleek, there are more things sticking out, and other things like that. That will cause more turbulent flow and therefore decrease the accuracy of the results. You will still get results but they may not be right.

*DGthe3* · 10-26-2007, 10:46 AM

Oh, and I just thought of something: this video confirms that the new camaro will look like the concept. I know that it has been said, but this is proof. They would not be doing wind tunnel testing on something that will be way off from the production model.

SSRich · 10-26-2007, 11:22 AM

Very old but nice to see again, anybody know if it looked good i dont know what to look for in them tests?

Justcallme61 · 10-26-2007, 04:08 PM

I think they just look for the smoke going over the car without much resistance...basically...?

*DGthe3* · 10-26-2007, 04:33 PM

You can do that and it gives a good idea of the overall flow as you move the smoke wand. It shows whats good and whats bad, but those terms are purely subjective. The other thing to do is to have lots of little holes in the surface linked to pressure sensors. These readings allow you to calculate the drag. This data is used by engineers to improve efficiency/performance. They are both useful but for different purposes.

Jeff · 10-26-2007, 06:29 PM

Nice video. The only thing is they were talking about wind tunnels and not Camaros =[. Oh well, was still cool to see a new Camaro being wind tested.

*Mr. Wyndham* · 10-26-2007, 10:11 PM

Quote:

Originally Posted by DGthe3

Oh, and I just thought of something: this video confirms that the new camaro will look like the concept. I know that it has been said, but this is proof. They would not be doing wind tunnel testing on something that will be way off from the production model.

And the GM-released prototype picture wasn't?

*DGthe3* · 10-26-2007, 10:25 PM

Quote:

Originally Posted by Dragoneye

And the GM-released prototype picture wasn't?

I guess I had it comming. But how much can you clearly see in that pic? I know that its similar but you can't see the nose which has a huge impact on aero.

10-25-2007, 09:07 PM	#1
LS1_Alex Drives: Firebird Formula Join Date: Oct 2007 Location: California Posts: 63	New camaro in a wind tunnel (video) Hopefully not a repost. Accidentally caught it on the science channel while flipping channels. Sorry for the low quality pics. Found a video on the internet as well. Video Click here to see Video

10-25-2007, 11:00 PM	#3
stevenm357 Drives: 98 Trans am 00 Trans am 01 corvette Join Date: Mar 2007 Location: West Virginia Posts: 381	AWESOME thanks for the post! __________________ 2001 Corvette Heads,Big cam, 4:11, Custom Exhaust, MGW Shifter Baer Eradispeed +2 2 pieces rotors, Hotchkiss swaybars. and a few other little things. 1998 Trans Am A4 ( was STS turbo until the turbo and oil pump died) 2000 WS6 Trans AM under the knife ( sadly turned into long term project.

10-25-2007, 11:44 PM	#4
DGthe3 Moderator.ca Drives: 05 Grand Am GT Join Date: Jul 2007 Location: Niagara, Canada Posts: 25,372	Nice. I like the bit about computational fluid dynamics at the end. Too bad its not going to be able to simulate a car very well for quite a while though. The shape is too complex and the resulting flow is too turbulent. I've done some engineering simulations on my computer for school, mainly stress analysis, and it puts a crazy load on the computer to do a low quality simulation. And that is for conditions that are easily understood. Fluids are extremely unpredictable. Anyway, very cool video __________________ Note, if I've gotten any facts wrong in the above, just ignore any points I made with them __________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!! __________________ Camaro Fest sub-forum

10-26-2007, 10:43 AM	#7
DGthe3 Moderator.ca Drives: 05 Grand Am GT Join Date: Jul 2007 Location: Niagara, Canada Posts: 25,372	Yes, I know that it is used but I don't believe that they can get as good of data as they can from a wind tunnel. They can get a rough idea and a good visualization. Wind tunnel testing is still used very extensively because it gives very accurate results. When I took fluid dynamics my prof told us that turbulent flow is fairly simple to analyze but amlost impossible to predict. A racecar will have fairly smooth (laminar) flow over most of the car. The calculations are much simplier but it still takes alot to calculate. A production car isn't as sleek, there are more things sticking out, and other things like that. That will cause more turbulent flow and therefore decrease the accuracy of the results. You will still get results but they may not be right. __________________ Note, if I've gotten any facts wrong in the above, just ignore any points I made with them __________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!! __________________ Camaro Fest sub-forum

10-26-2007, 10:46 AM	#8
DGthe3 Moderator.ca Drives: 05 Grand Am GT Join Date: Jul 2007 Location: Niagara, Canada Posts: 25,372	Oh, and I just thought of something: this video confirms that the new camaro will look like the concept. I know that it has been said, but this is proof. They would not be doing wind tunnel testing on something that will be way off from the production model. __________________ Note, if I've gotten any facts wrong in the above, just ignore any points I made with them __________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!! __________________ Camaro Fest sub-forum

10-25-2007, 09:35 PM	#2
Kenz Camaro Drives: 1994 Impala SS Join Date: Jan 2007 Location: Huntington Beach, CA Posts: 113	Very cool! I hadn't seen that!

10-26-2007, 08:13 AM	#5
Jak Drives: 03 Dodge Dakota Join Date: Jul 2007 Location: New York Posts: 627	Cool post, thanks. Did you check out the other vids they had on the Camaro? Loved the one when they started it up and reved the engine, I hope GM puts that exhaust on all the camaros.

10-26-2007, 11:22 AM	#9
SSRich Drives: 1967 camaroSS Join Date: Mar 2007 Location: va Posts: 239	Very old but nice to see again, anybody know if it looked good i dont know what to look for in them tests?

10-26-2007, 04:08 PM	#10
Justcallme61 Drives: 2000 honda accord v6 Join Date: Sep 2007 Location: South Dakota Posts: 214	I think they just look for the smoke going over the car without much resistance...basically...?

10-26-2007, 04:33 PM	#11
DGthe3 Moderator.ca Drives: 05 Grand Am GT Join Date: Jul 2007 Location: Niagara, Canada Posts: 25,372	You can do that and it gives a good idea of the overall flow as you move the smoke wand. It shows whats good and whats bad, but those terms are purely subjective. The other thing to do is to have lots of little holes in the surface linked to pressure sensors. These readings allow you to calculate the drag. This data is used by engineers to improve efficiency/performance. They are both useful but for different purposes. __________________ Note, if I've gotten any facts wrong in the above, just ignore any points I made with them __________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!! __________________ Camaro Fest sub-forum

10-26-2007, 06:29 PM	#12
Jeff ~ANTI-FORD~ Drives: Cadillac CTS Join Date: Oct 2007 Location: San Antonio, Texas Posts: 608	Nice video. The only thing is they were talking about wind tunnels and not Camaros =[. Oh well, was still cool to see a new Camaro being wind tested. __________________ My Z28 sorry guys.. sold Camaro and got a Cadillac CTS, waiting for a few years to get a 2010 SS used ;]

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