02-16-2010, 10:17 PM
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#31 (permalink)
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Master EcoModder
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Wow! Frank kicks s*** up and it stinks. May wonders never cease? 
(Frank, that was wide open, how could I resist?)
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Vortex generators are old tech. My new and improved vortex alternators are unstoppable.
"It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.
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02-16-2010, 10:49 PM
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#32 (permalink)
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Moderate your Moderation.
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Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US)
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LOL Chaz... I see you're another social pessimist, not unlike myself!
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
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06-15-2010, 01:20 PM
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#33 (permalink)
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Master EcoModder
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Several months back, Automotive Engineering had this picture of a Porsche Carrera.
It shows the air flow through the wheel well, similar to what AeroCivic has mentioned in his design.
In the same magazine was shown a picture of the VW Up!
Jim. |
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07-12-2010, 01:59 PM
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#34 (permalink)
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Master EcoModder
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This is a picture of CFD analysis for the Chevy Volt.
The article went on to say that nowadays, the preferred method of measuring air drag is with CFD.
Building a clay model with the same level of detail that can be achieved with the CFD is cost prohibitive, and the CFD gives the results in a reasonable time period.
The grill was detailed in such a way as to meet the cooling requirements on the hottest day in Arizona for example.
Jim. |
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07-12-2010, 02:38 PM
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#35 (permalink)
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...beats walking...
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...looks like the "back-end" of the VOLT could definetly use more aero work!
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07-12-2010, 09:00 PM
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#36 (permalink)
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Recreation Engineer
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Quote:
Originally Posted by Old Tele man
...looks like the "back-end" of the VOLT could definetly use more aero work!
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Probably. Then again, when we only get to see data from the symmetry plane that offers us limited understanding of the 3D wake and overall drag of the vehicle. The head-on dispersion lines are helpful. Seeing the same from the rear would be really nice. 
Cheers
KB |
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07-13-2010, 09:03 AM
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#37 (permalink)
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Master EcoModder
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Quote:
Originally Posted by Old Tele man
...looks like the "back-end" of the VOLT could definetly use more aero work!
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Yeah. Did you see the video of the Volt engineer bragging about how great the aero was and that the 1/2" lip "spoiler" on the back added 1/4 mpg? BWAHAHAHA! |
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07-13-2010, 05:23 PM
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#38 (permalink)
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Master EcoModder
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back-end
Quote:
Originally Posted by Old Tele man
...looks like the "back-end" of the VOLT could definetly use more aero work!
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A neighbor is planning to buy a VOLT.At some point we can run my trailer behind it to look for a difference.He's a pilot and a good friend of his is an ultralite designer so he's kinda 'gets it.'
Should be fun! West Texas is installing an enormous amount of windpower generating capacity on top of what it's already done.We have a shot at zero-carbon commuting staring us in the face.Not quite Santo Island,Denmark,but way out ahead of nothing. |
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09-23-2010, 01:30 PM
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#39 (permalink)
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Master EcoModder
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Here are several pictures of the Nissan Leaf.
The first picture shows just how small this car really is.
The second picture shows the adjustable inlet for cooling, presumably partially for controlling electric motor temperatures. I would imagine this inlet is computer controlled by the main computer.
Jim. |
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09-23-2010, 01:56 PM
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#40 (permalink)
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Master EcoModder
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If GM's cfd lofting is so great, why does the Volt have such sucky drag in this day and age?
I always look at the front corners of the vehicle, where air flow is fastest and therefore drag per square inch is greatest of anyplace on the vehicle. If there are lumps & bumps or nooks & crannies there (as Volt has), it tells me the designers are pikers.
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