ScarbsF1 wrote:For a diffuser to create downforce it needs as much flow to pass through the venturi as possible. Teams arrange bargeboards and other aero devices to build up a high pressure region ahead of the floor to ensure the greatest mass flow underneath. Its then down to the expansion ratio of the diffuser to pull that flow through. Last years blown diffusers improved the expansion ratio, but not the flow ahead of the floor. What Renault have done in to lead the exhausts forward through the sidepods (about 1 meter) in-between the chassis and the radiators, then turn the exhaust 90-degrees to point it down towards the leading edge of the floor. The exhausts gasses follow the curved leading edge and round underneath the floor. This accelerates the flow under the floor for more mass flow and hence more downforce.
forty-two wrote:What do you guys think?
humble sabot wrote:he's off by 90º and 4 inches.
andrew wrote:forty-two wrote:What do you guys think?
The small fences certainly look like they would act as channels.
It looks like Renault have found something clever and have had to share it with Red Bull. It'll be interesting to see if Lotus have a similar system.
forty-two wrote:Possibly true!
Actually, my biggest concerns are:
- Proximity of exhaust pipe to fuel cell.
- Danger for operatives during pitstops.
EDIT Thinking about it, most road cars route their exhaust under the fuel tank, but two important differences exist. Fuel tanks are metal, and exhaust doesn't run anything like as hot!
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