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Interesting question, i was wondering about side skirts too and came across a paper from two students at Chalmers University... had trouble copying the link so heres the title
CFD Analysis of Aerodynamic Trailer Devices for Drag Reduction of ...
Masters Thesis by Hakansson and Lenngren
Very interesting paper as they look at various aero treatments for semi trailers, and has some great pictures!
The aha moment for me was the testing at 0 degrees/straight headwind and 5 degree side wind, as i drive in massive sidewinds here on the sask praires.
The good stuff is in the second half of the paper, enjoy!
EDIT: page 31 has results of side skirts and smooth underbody.
this paper focuses on semi trailer aero, but IMO aero is all about minimizing the wake, regardless of the size of the vehicle
Last edited by rumdog; 01-14-2015 at 08:22 PM..
Reason: more info
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