07-11-2008, 05:05 PM
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#14 (permalink)
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Master EcoModder
Join Date: Jul 2008
Location: Cypress, TX
Posts: 331
Formula - '96 Firebird Formula/Trans-Am 90 day: 19.31 mpg (US)
Thanks: 8
Thanked 31 Times in 18 Posts
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Quote:
Originally Posted by co_driver
Numbers to use:
L* = effective diameter of your car [1990 Firebird: (72.4" (width) * 49.8" (height) )^0.5 = ~60" = 1.53 m]
v = velocity [50 mph = 22.35 m/s]
'nu' = 1.6*10^-5 m^2/s
Thus: Re = 1.53 * 22.35 / 1.6*10^-5 = ~2,100,000
(*) Note:
A better reference would be the effective diameter rather than its length, as length is used for flat plates.
Now, on to making 2-D renditions of vehicles I have once owned...
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Alright, thanks!
Here's a few more I made out of boredom. One is my friend's 04 Avalanch, and for kicks I did my '69 CST10. Though these are with the default numbers, and the windspeed one at .1
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Lets see how far it can go
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