02-23-2024, 06:33 PM | #23 |
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Google Ferrari 296 underbody, I can't copy the images for some reason but here are some sources:
https://www.autodevot.com/2021/06/fe...-v6-4-decades/ https://www.f1technical.net/forum/viewtopic.php?t=31427 This is very formula 1 esque, with how they're using floor fences to generate vortices to improve floor performance, and generate out wash to seal the floor. But for the street car I suspect it's to push out the tire wake more than anything, so it doesn't impact floor performance - since the Ferrari does have a very flat floor benefits of being mid engine and not having exhaust pipes that need to be cooled, but you do lose a lot of diffuser volume as a result). For our cars it'll be hard to replicate this without a proper 3d scan to run in cfd so we can see how he's to position these strakes to push out the tire wake. Also you don't want to put the strake in a region of dirty air flow because it won't be efficient, and you don't want to crank the angle of the strake too hard or else it'll flow separate and be less effective. Essentially it's not as simply as adding strakes and expecting huge benefits. I think we'd get more benefits venting the wheel well and removing all that positive pressure, it'll decrease lift which is always a good thing.
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02-23-2024, 06:55 PM | #24 | |
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02-23-2024, 07:03 PM | #25 | |
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I don't think it'll be easy without a proper 3d model scan (including the wheels and tires) to run in cfd and see what the tire wake is doing and how flow is behaving in this region. The strakes aren't impossible nor hard we just need the 3d scan and an actual aerodynamicist to do things right and efficiently. The flat floor might be impossible on a street m2, unless you want to make major modifications. Second the under side of the m2 isn't great, the stiffening plate in this area has a raised lip all the way around, so flow coming off of that is probably a disaster. Also where would we even mount it? How do we even drill it?
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02-26-2024, 11:26 AM | #26 | |
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02-26-2024, 03:11 PM | #27 | |
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These are not easy questions to answer, and even the f1 teams with billion dollar facilities, the best wind tunnels and the best CFD tools and engineers got wrong in 2022. Ground effects is an insanely tough challenge that I doubt the average fabricator or even engineer will accomplish with great success, or manage to make a floor that produces substantially more downforce than just a simple flat floor. A flat floor on the other hand is much simpler and significantly doable if you want to make sacrifices to the cars Street ability and just make the exhaust a side exit, and deal with the suspension components hitting the floor. Still a lot of CFD work needs to be done to do it right, otherwise the aero gains might not be worth the effort. Adding strakes by itself without CFD work may not accomplish anything either, so it's not the fabrication that's hard, it's doing it properly design wise that's hard.
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02-29-2024, 08:06 PM | #28 | |
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