There has been a lot of discussion about exhaust use , both last year and this winter with the new regulation.
There have been some hypotesis about blowing, and sometimes Coanda effect has been brought in; also it has been rumored to be used on the ferrari, but we have seen sometimes rumors come true, sometimes they do not.
Supercirculation has also been discussed to some extent, with a dedicted thread some weeks ago.
These days, having seen the pictures of mclaren and ferrari launch, which both sport extensions in the sidepod to house the exhaust, I am getting convinced that the rumor about Coanda effect application is indeed true, and that the effect is being exploited around the sidepod extension to generate downforcean decreas drag around the rear wheel.
Of course we do not see a properly shaped blown flick, beacuse of regulation on curvature radius, but the effect could in the end be similar to the effect of flicks (those long appendages in front of the rear wheels banned since 2009).
In particular it is the downward sloping shape of the ferrari extension that has suggested me this application.
The blowing of exhaust and the induced change in direcion of the flow on the lower face fo the sidepod extensionscould generate a sucion peak in that zone, which coul be enanched by clever shaping of the radis betwee the inne and outer face of the bodywork.
Then the exhaust flow could also be used for blowing other parts of the car: Coanda effect and blowing are not mutually exclusive.
I will post a picture as soon as possible to explain my point of view better, even if I hope that the idea is somehow understandable by the description.
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