Is there any benefit of larger SMIC vs large front mount?

[anyonebutme]

Also, venting the fender behind the tire is an awesome drag reduction for free.

[Lobo2112]

All the simulation images i'm finding for cars with actual sheet metal show the wheel well as a low pressure zone. The only sims I'm finding that show a high pressure area there are on open wheel cars, and even then only on the front face (but lets face it... we're talking a completely different animal when it comes to an open wheel design). I do recall seeing a sim that was targeted towards the wheel and wheel well its self but I can't find it to reference. It showed (in relative terms) that you actually had the highest pressure in the wheel well on the upper side of the wheel (12 o'clock position) in regards to everywhere else in the wheelwell. I believe most functional fender vents (including the ones towards the rear of the fender) are actually pretty well placed to bleed off that high pressure. I'm also pretty sure that the lowest pressure point in the wheel well was right where our SMICs are dumping air to. I'll continue trying to find it.

[Lobo2112]

Aerodynamic flow in wheel arches and behind wheel - Forum - F1technical.net

^ About halfway down on that page is a good visual (I was wrong on location of the high pressure zone) that was pulled from one of the papers that were linked above it in the same thread. You're looking for the diagram posted by Ciro. His math is right his explanation is wrong. The person below him correctly identifies the "V" variables in the equation are Velocity NOT Volume. It actually shows the area in the wheelwell is lower pressure than atmospheric.

[anyonebutme]

I don't have real internet where I'm at, but when I get back I'll post a few of J's CFD runs while he was building his GTS car. More important than the local pressure is the flow conditions. Go search for a CFD run where the outside edge of the tire is exposed to airflow like most 3S's I've seen, make sure it has flow visualization on.