Hoffman900 wrote: ↑04 Jan 2022, 05:37
wogx wrote: ↑04 Jan 2022, 04:45
Would the incorporation of e.g. heat pipes in the top surface of Venturi tunnels have any positive effect on the air flow? Would it be legal?
It’s all going to be heat soaked from the drivetrain and coolers.
The temp that matters is the surface and ~1ft off the surface of the track.
Still want to see someone show me the math that air will approach SOS through the tunnels, in the box the FOM is holding them in.
You have to know the volume and flow rate, we can use car speed as the velocity for area 1, but we don't know the area of the tunnel inlet or the constriction(A2). The flow velocity is a square ratio based on inlet volume and venturi volume. I know that with water, a 6:1 inlet to nozzle ratio will create a corresponding ~6x increase in flow speed. You only need a mach number greater than .3 or 370kph for compressibility effects to take place. If there is a 6:1 ratio of flow velocity at the throat vs the inlet, at 70kph you can have local flow velocity at the throat be higher than mach .3, at 180kph vehicle speed you would have sonic choking at the throat.