cross-posted from: https://lemmy.ml/post/26201585
So, I don’t know much about cars, but I generally expected for that part to be flush with the body. Is there any reason for there to be a grill like thing in front of the front door?
Looks like brake vents, has them on the rear end as well. The black triangle on the left side of the rear end / bumper.
My understanding has been that these are mostly for cooling the brakes
To appear sporty
Is that an enthusiast thing? I initially thought it was a manufacturing defect.
It should be a pressure relief channel coming from the wheel arch: wheel rotation creates a complex air flow and I think this channel lets trapped air flow outwards (and stay attached to the vehicle sides, improving aerodynamics). Probably I got much wrong and more probably still, it’s of no real use for a road car driving under 200km/h.
Edit: could also be linked to brake cooling, now that I think of it…
Brake cooling was my first thought. I’ve never heard of any ducting made just for releasing pressure caused by tire spin, but have cut many brake cooling ducts in my days
Its probably for brake cooling.
There’s a high pressure wave that builds up in front of the wheels that wants to be released by putting a grill in front of them so less air gets pushed under the car, because if that pressure wave were directed under the car then it would reduce the amount of downforce being generated by the Bernoulli effect.
AFAIK, grills behind the wheels will actually reduce the downforce of a vehicle by allowing more air under the vehicle, increasing the pressure, but its a trade-off that can be made to regulate brake fade when trying to slow down from very high speeds.
Thanks for the answer. I am not really familiar with cars very much.
I support your answer with my basic knowlede of car aerodynamics. Since this duct is so small, i highly doubt it has a significant or even measurable effect. Brake cooling would make sense though especially in a sporty electric vehicles that often suffer from brake overheating.
