Join Date: Jan 2010
Location: Colorado Springs
Here is a Tesla CFD of the velocities...
It appears that you would want you fender vents in the blue areas... behind the front wheels and behind the radiator opening in front of the windshield...
I would not use that CFD data to determine vent placement. It's a velocity profile, not a pressure profile. The blue, low speed area at the base of the windshield is likely a sign of a high pressure zone.
The blue behind the front wheel is more interesting. It may be a good location for a vent, but the pressure profile would be needed to confirm.
The velocity profile appears helpful in determining some likely areas of high turbulence/drag. The side mirrors and the exposed section of the front tire are causing large gradients in air velocity.
2006 Chrome Orange Elise - 6.3 lbs/hp - MP-62 Supercharger, 3.2" Pulley, BOE Fast-Works Tune, Ported Head, MWR Stage 3 Cams, Penske Suspension, Cup Air Box, PPE Header with Catless Custom Twin Tip Exhaust, Fidanza Flywheel, ACT Clutch, MWR Water Pump + Alternator Pulley, 1900 lbs
Saab Turbo X, 415hp, 532 tq
Tesla S P85D - Wife's daily driver