Double diffusers effectively lower the pressure of air under the car by giving it an extra path to escape.Just_a_fan wrote:If there is any hint that it could be deemed a double diffuser it will be thrown out by the scutineers (or by the FIA after Ferrari / McLaren protest).
This looks just like it is blowing [something] over the top of the diffuser to help energize the flow as it exits. In theory this will draw more air through the diffuser at a higher velocity, which will make it more effective. It's a miniature version of what the R31 appears to be doing. Blackout has mentioned it before, and in fact it's been on the car since launch.
About that point, the car was launched with external-exiting exhausts. If this channel has been on since launch, it's hard to say it is fed by the exhaust. It's of course possible that they did a 'dummy' version at launch and then fitted a newly shaped floor where these tunnels were fed by the exhaust as well, the split we don't see as it can be under the 'cover' that appears to just route the exhausts backwards to the diffuser.
Again... I am just thinking laterally here, I don't have any hard evidence. Just 'possibilites'...