turbof1 wrote: ↑
Tue Nov 21, 2017 11:15 pm
mmred wrote: ↑
Tue Nov 21, 2017 10:04 pm
that would be suicidal for 2 reasons
first on the bottom part the front wing the section is already unable to properly deflect all the flow at the (out)side of the tyre to reduce the wake, so movin' the bottom part of the tyre outward makes it only more complicated and you reduce performance and efficiency to deflect the flow far from the tyre....
second, the upper part of the tyre instead creates a wake that interacts with the sidepod, therefore bringing it closer to the car is sucidal ( there are deflector panels like the ferrari and redbull copycat one that serve exactly that purpous to separate the wake from the sidepod and keep it far..)
in the end from aerodinamic performance ( especially drag reduction on front wing front tyre and turbulence reduction on sidepods and therefore on upper part of the diffuser to fuel the bottom diffuser) you want to do the opposite
Maybe it's exactly the bargeboards that allowed this kind of setup. As you mentioned, the upper part of the tyre creates a wake interacting with the sidepod, but we have large fins on the chassis acting as flow conditioners towards the sidepods.
The bottom part of the front wing is indeed quite unable to deflect flow. However, the front of the tyre is clearly moving inwards (it is toe-in after all), not outwards. This reduces the blockade from the front part of the tyre and so does make things easier for the wing to deflect the flow away from the tyre.
... Reading through your post in proper, you did actually notice it is toe in right? front of the tyre inwards, back of the tyre outwards?
you know i was tinkin about the exxagerated camber!!!
well the problem with toe in is (almost )simple
from aero perspective the bad is that any angle of attack compared to the wind direction creates a lift and increases the drag
so best efficiency is still with zero toe in, also u dont want really any side-lift on wheels ( there s zero purpose for that )
sure, there is chance that you have some positive effect allievating the bad, probably the intuition u had, in the creation of a movement that directs the flux outwards, but you still have to increase even more the deflection of the front wing to reduce the local angle of attack and move the stagnation point accordingly to make it behave like it works at zero angle ( but sooner or later the wind of the side keeps up with the defection and the work you do costs you drag and wake )
probably it s even worse ( cause camber has zero angle of attack just creates a different geometry but toe in affects the tyre cfd heavily )