Mercedes AMG F1 W03

[Ferraripilot]

Has anyone done a CFD model on the starter hole blown diffuser addition? I find myself constantly wondering how much their small volume addition to their diffuser adds.

[beelsebob]

Has anyone done a CFD model on the starter hole blown diffuser addition? I find myself constantly wondering how much their small volume addition to their diffuser adds.

It's not so much about the volume added, but the energy of the air flowing through that section – if you can get it going faster, at lower preasure than the rest of the diffuser then you'll suck air out of the diffuser and make all of it operate more efficiently.

[Ferraripilot]

Has anyone done a CFD model on the starter hole blown diffuser addition? I find myself constantly wondering how much their small volume addition to their diffuser adds.

It's not so much about the volume added, but the energy of the air flowing through that section – if you can get it going faster, at lower preasure than the rest of the diffuser then you'll suck air out of the diffuser and make all of it operate more efficiently.

Could the starter hole add a nozzle effect then? I certainly don't see a flat hole as being all too capable of that..... I could however see the starter hole as being positioned in such am oblique way that it could be fed at an optimal rate

[thomin]

[Nickel]

Wow! That is quite the "starter motor hole". Great picture!

[Blackout]

Another photo on the ducted cooling outlet and the diffuser

[Owen.C93]

Just to clarify that isn't a starter motor hole. It's just where they've placed two sides below the crash structure to make a little outlet. It looks like they've used the RBR style ducts to feed that make shift hole rather than utilising an oversize starter motor hole lower down on the diffuser.

[Nickel]

Just to clarify that isn't a starter motor hole. It's just where they've placed two sides below the crash structure to make a little outlet. It looks like they've used the RBR style ducts to feed that make shift hole rather than utilising an oversize starter motor hole lower down on the diffuser.

So this outlet is fed by air above the floor?

[Ferraripilot]

Just to clarify that isn't a starter motor hole. It's just where they've placed two sides below the crash structure to make a little outlet. It looks like they've used the RBR style ducts to feed that make shift hole rather than utilising an oversize starter motor hole lower down on the diffuser.

So this outlet is fed by air above the floor?

There was some conjecture earlier that might be the case, but I doubt it's blown by anywhere other than the starter hole. Still difficult to say though.

[xpensive]

Another photo on the ducted cooling outlet and the diffuser

This is xactly what I mean, if it looks right, it most probably is right.

[Owen.C93]

Just to clarify that isn't a starter motor hole. It's just where they've placed two sides below the crash structure to make a little outlet. It looks like they've used the RBR style ducts to feed that make shift hole rather than utilising an oversize starter motor hole lower down on the diffuser.

So this outlet is fed by air above the floor?

Yes it looks like it, you can see some ducts in some other photos.

Just to clarify that isn't a starter motor hole. It's just where they've placed two sides below the crash structure to make a little outlet. It looks like they've used the RBR style ducts to feed that make shift hole rather than utilising an oversize starter motor hole lower down on the diffuser.

So this outlet is fed by air above the floor?

There was some conjecture earlier that might be the case, but I doubt it's blown by anywhere other than the starter hole. Still difficult to say though.

The starter motor hole is that little circle further down.

[Ferraripilot]

Yes but look a few pages back and you will see a clear picture of the starter hole through this new mini DDD.

[Ferraripilot]

I'm surprised I didn't think of this before, but could it be possible that there is a vacuum effect taking place from the starter hole? This could be possible by the floor blowing the area over the starter hole allowing the pressure difference between the diffuser to suck air through the starter hole into this mini DDD?

[Crucial_Xtreme]

About the W03's exhaust & diffuser. AutoSport's Gary Anderson say that Mercedes is doing this:

The W03 appears to use the hot air from the exhausts & the cooling outlet at the base of the engine cover, directing it towards the upper surfaceof a central section of the diffuser. This section is partly formed from the underside of the crash structure in a similar way to what we saw during the double diffuser days. But instead of being fed airflow through the now banned slots in the flow, it takes it from the flow energized by the differing pressures of hot air flowing over it and cool air through it. Enhancing the effect are the curved splitters(strakes)within the diffuser, which appear to be for turning the airflow coming through it towards that raised central section.

[MercAMGF1Fans]

About the W03's exhaust & diffuser. AutoSport's Gary Anderson say that Mercedes is doing this:

The W03 appears to use the hot air from the exhausts & the cooling outlet at the base of the engine cover, directing it towards the upper surfaceof a central section of the diffuser. This section is partly formed from the underside of the crash structure in a similar way to what we saw during the double diffuser days. But instead of being fed airflow through the now banned slots in the flow, it takes it from the flow energized by the differing pressures of hot air flowing over it and cool air through it. Enhancing the effect are the curved splitters(strakes)within the diffuser, which appear to be for turning the airflow coming through it towards that raised central section.

And this is LEGAL? [-o<