Red Bull RB8 Renault

[Shakeman]

Right, that's what I thought and I'm having trouble seeing on any CFD. Last year was no stretch to the imagination at all with a focussed exhaust.

At what point does it become a seal rather than just energised gases flowing through the diffuser?

I'm not sure why you're having trouble.

I understand this is the MP4-27, but it is exactly what Red Bull are trying to accomplish.

Neither of those images show a sealed diffuser, that's why I'm having trouble.

[Crucial_Xtreme]

Neither of those images show a sealed diffuser, that's why I'm having trouble.

Nor is this a CFD analysis from a Formula One team either. However one should be able to see what the teams are trying to accomplish with getting the exhaust gasses to the exact same spot as last year. Is it really that hard to deduce this is the aim/goal of the team? This is one thing that to me is obvious, but is one thing that experts are agreeing on.

[strad]

if there is one.

[Shakeman]

Neither of those images show a sealed diffuser, that's why I'm having trouble.

Nor is this a CFD analysis from a Formula One team either. However one should be able to see what the teams are trying to accomplish with getting the exhaust gasses to the exact same spot as last year. Is it really that hard to deduce this is the aim/goal of the team? This is one thing that to me is obvious, but is one thing that experts are agreeing on.

I'm not trying to be obtuse.

Where is the evidence that the diffuser is sealed and it's not just a case of getting energetic gas through the diffuser and amongst the brake duct fins?

[amouzouris]

Neither of those images show a sealed diffuser, that's why I'm having trouble.

Nor is this a CFD analysis from a Formula One team either. However one should be able to see what the teams are trying to accomplish with getting the exhaust gasses to the exact same spot as last year. Is it really that hard to deduce this is the aim/goal of the team? This is one thing that to me is obvious, but is one thing that experts are agreeing on.

I'm not trying to be obtuse.

Where is the evidence that the diffuser is sealed and it's not just a case of getting energetic gas through the diffuser and amongst the brake duct fins?

i believe that the evidence is the rake they were running last year and to some extend this year..if they were not 'sealing' the diffuser they wouldnt be able to run the cars with this much rake..

[raymondu999]

Wouldn't there be more "natural" or "organic" (for lack of a better word) way to do this though?

[hardingfv32]

Where is the evidence that the diffuser is sealed and it's not just a case of getting energetic gas through the diffuser and amongst the brake duct fins?

Your right, it does not seem to show sealing. It is also not showing any leakage which is going to be there no matter what. The seal is never going to be very good, so we should see leakage. In this CFD I doubt there is much detail at the diffuser. The main effort was to get the exhaust nozzle close and see what the flow looked like initially. I assume that we are only seeing flow that originate from the exhaust nozzle on screen. That other flows are 'possibly' hidden from our view.

I am with you when it comes to questioning whether the flow is effectively targeting the diffuser gap, but obviously some flow is making its way to the edge.

Brian

[raymondu999]

Maybe some of the homebrew CFD people here could do up a fresh CFD run focusing on seeing the diffuser seal, if any?

[hardingfv32]

Maybe some of the homebrew CFD people here could do up a fresh CFD run focusing on seeing the diffuser seal, if any?

Ballpark.... what features or details do you think are required in front or beside the gap? Who ever does this does not need to be wasting his time on something that is not representative. If we could come up with some dimensions that would help simplify that part of the project.

Brian

[Crucial_Xtreme]

I read an article today with some quotes from Marko. I thought it was interesting that he mentioned one of the exact same problems that Ferrari currently has:

"To tell you the truth, at the moment it's almost as though the car decides when it is the fastest, and when it is not,"

This is exactly like Ferrari saying one lap the car is great and the next it sucks. Seems some teams are having a rougher go with the new Regs than others. Though I'm sure they'll iron out the wrinkles. Just interesting.

LINK

[Crucial_Xtreme]

Red Bull RB8 Exhaust Iterations


via AS/Effe 1 Tech

[aral]

Red Bull RB8 Exhaust Iterations

This has been on f1.com for a few days. Should you not give credit to the source?

[Crucial_Xtreme]

Red Bull RB8 Exhaust Iterations

This has been on f1.com for a few days. Should you not give credit to the source?

That isnt where this picture/s came from. "F1.com" doesn't have the same description as the picture above.

[Huntresa]

Pics in the article is from F1.com but not the text etc.

[bhall]

Where is the evidence that the diffuser is sealed and it's not just a case of getting energetic gas through the diffuser and amongst the brake duct fins?

i believe that the evidence is the rake they were running last year and to some extend this year..if they were not 'sealing' the diffuser they wouldnt be able to run the cars with this much rake..

Yes-ish.

I read an article today with some quotes from Marko. I thought it was interesting that he mentioned one of the exact same problems that Ferrari currently has:

"To tell you the truth, at the moment it's almost as though the car decides when it is the fastest, and when it is not,"

This is exactly like Ferrari saying one lap the car is great and the next it sucks. [...]

And the F2012 has been widely noted to have problems with pitch sensitivity, though the cause of that is still largely anyone's guess. One of the ways Ferrari has clearly attempted to mitigate those effects is with reduced rake, which leads me to...

(I scanned the last 20 or so pages to see if this has been covered, and I didn't see anything. So, apologies if I missed it.)

What is this?


(Click to enlarge)

Are they measuring any deflections of the tea tray? If so, why?