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Old 07-12-2008, 03:11 AM   #24 (permalink)
cfg83's Avatar
Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
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Hello -

I didn't change any of the default numbers except for duration (40 seconds), so maybe this is all wrong. First, I did a stock analysis on my SW2 :

1999 Saturn SW2 Aero-Analysis
...removed to save download time...

After around 6 seconds, a "Virtual Kamm-Back" appears (at least that's what I call it). Then I did an analysis with a Kamm-Back based on MetroMPG's rain-drop example, ending at the bumper :

1999 Saturn SW2 + Kamm-Back Aero-Analysis
...removed to save download time...

Finally, I went back to the first analysis and added the "Virtual Kamm-Back" :

1999 Saturn SW2 + Kamm-Back II Aero-Analysis
...removed to save download time...

I like the Virtual Kamm-Back because it would mean not having to worry about moving the 3rd brakelight and maintaining almost full rear visibility. It also seemed to produce the most stable swirly-wake during the run. A nice compromise.

Question: Could my Virtual Kamm-Back be "tailored to the program"? What I mean is, could I be making a shape that the program likes?


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Last edited by cfg83; 07-18-2008 at 03:54 AM..
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