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Old 11-15-2008, 12:13 PM   #41 (permalink)
trebuchet03
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
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Quote:
Originally Posted by ChrstphrR View Post
Since Cd got you that model via my original digging ... I'm just curious now, trebuchet03 ... what format is that model saved as -now-?

Maybe I can help and do some of the trimming down on the model to help you cut down the size of it, so it won't bog your machine so. No ulterior motives for me, being that I get direct benefit from ANY work on Jetta models you get good results with, after all.
It's a solid works .sldasm and .sldprt

Most people don't have Solidworks.... Once I'm one cleaning up the model, I'm going to save it into a variety of formats... .stp, .stl, etc. and make it available for other people. Hopefully the converted file size will be smaller than the 80+ megs of Soldiworks file (it's shrinking as I clean it up)


Quote:
you may want to have a look at The-Blueprints.com - 25990 blueprints online
Thanks I'm getting about the same... Except on the 2005, which seems to be a couple degrees steeper...


Quote:
Cool stuff but not sure i understand the images, the different colours represent different air speeds, if so which colour is "best", do you want the air moving quickly over the surfaces?
Would be cool to see one done with a teardrop shape showing how a "perfect" aerodynamic shape looks in the program.
I can totally do a perfectly streamlined body

So what we're looking at.... In very simple terms, we're trying to minimize the blue zone in the colored pictures - those indicate areas where air velocity = 0. Ideally, everything would be moving at the wind tunnel velocity - 55mph.

When zoomed up close to the car - we're looking at the boundary layer. A thin boundary layer is a good boundary layer. Once the layer gets too thick, we call this separation. So on the colored images, we want a thin layer of blue/green/yellow starting at the beginning and extending to the very end.

In the black and white images, we can more closely see where separation is occurring... We don't want separation - but if unavoidable, we want it as far back as possible. When you see a bunch of black and white lines leave the vehicle, that's basically separation.

These are, of course, generalizations

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