Red Bull RB8 Renault

[kilcoo316]

Yeah - the leading edge of it is at the diffuser ramp.

That puts the leading edge in around the axle-line (whats the exact diffuser design-space?).

[Owen.C93]

You'd imagine that since the strake appeared with the new exhaust solution then they are connected, but maybe it's just an update that they saved for the new floor since it's going to be replaced anyway.

[hardingfv32]

Your "actual information" is something another board member came up with, on his own, about another car, with another engine, and another exhaust system, in the absence of any other airflow, etc, etc. It is a complete joke and you are wanting us to believe it's gospel. Since you are asking us to rely on your numbers, why don't you tell us what your margin of error is?

So you would have us believe that your completely opinion based discussion is more credible than this CFD simulation and kilcoo316 exhaust velocity calculations.

These numbers are valid for our discussions until proven otherwise. Calling them a joke does not cut it.

Brian

[Crucial_Xtreme]

This strake is clearly in line with the ramp of the sidepods and I think it's no coincidence it was placed there when they introduced the new exhaust solution.
Browsing through pictures, they're trying different things, but that strake is close to the edge of the floor right where the gap is between the floor edge and rear tyre.

Clearly to keep exhaust along edge of floor IMHO


This last picture has a great look through the tunnel!

[hardingfv32]

Clearly to keep exhaust along edge of floor IMHO

Please expand. I see the strake simply dividing the flow as it approaches its leading edge. I do not see how it controls flow to the inside or outside.

Brian

[Dragonfly]

I notice that in this long discussion no one mentions the air flow above the sidepods. As well as the changed sidepod winglet which IMO is to condition that flow in some predefined way.

[bhall]

I notice that in this long discussion no one mentions [...]

I've been waiting for that part, too. The revised sidepod wing was introduced alongside the new exhaust. I think they're clearly related.

[Owen.C93]

I notice that in this long discussion no one mentions [...]

I've been waiting for that part, too. The revised sidepod wing was introduced alongside the new exhaust. I think they're clearly related.

Well technically it was ran the day before the floor update. Just because they arrived at similar times though doesn't mean the are connected.

[bhall]

'Tis true. But when you see a similar wing on the Sauber, which also features a similar exhaust layout, I don't think it's a stretch to suppose the two somehow go hand-in-hand.

EDIT: I think they serve to help keep the exhaust plume "attached" by increasing the amount of air flowing over the sidepods.

[Crucial_Xtreme]

Clearly to keep exhaust along edge of floor IMHO

Please expand. I see the strake simply dividing the flow as it approaches its leading edge. I do not see how it controls flow to the inside or outside.

Brian

My quote should read: Clearly to HELP keep exhaust flow along edge of the floor.

I don't disagree. I think it's there to help keep flow along the edge of the floor. This strake is not such a new invention that Newey only came up with it over the winter. It's directly related to the new exhaust position. Hence why I believe it's there to help keep some exhaust flow along the edge.

@Dragonfly I agree the new sidepod turning vane winglet was definitely introduced for a reason. How it is conditioning the flow, I'm not sure. But it and it alone is a great reason why the McLaren CFD simulation isn't indicative of how the RB exhaust functions.

n Smikle's sim was awesome, but I don't think you can correlate the two exhausts as some here are trying to do. They're two separate solutions.

[Nando]

Looks like the exhaust gases are ment to do this, depending on the speed the car is travelling.

[bhall]

That scenario has been proposed many times before - and, in fact, is the current focus of this thread's debate - but at least your visual looks immeasurably better than anything shown previously.

[hardingfv32]

As well as the changed sidepod winglet which IMO is to condition that flow in some predefined way.

Is this the part with the # 2 on it in the photo above?

Brian

[Nando]

That scenario has been proposed many times before - and, in fact, is the current focus of this thread's debate - but at least your visual looks immeasurably better than anything shown previously.

I know absolutely nothing about Aerodynamics but just by studying how everything flows it sure seems that Newey had something like this in mind.

Assuming it is semi-correct, would the exhaust gases come together after that little bump between them?

And also, could it possibly be that this is how the exhaust works at all times and not just one way or another depending on speed?

With the intake (supposedly) creating a low pressure at the exit it maybe could "help" drag the exhaust gases inwards as the speed increases?

And that little box with 4 bolts. Possibly there for an addon/update that separates the flow even better? (yellow)

low pressure zone also illustrated,

[bhall]

You ask questions that someone who doesn't know anything about aerodynamics wouldn't ask. So, give yourself a little more credit, and browse through the last 10-20 pages in this thread. I'm pretty sure everything but the kitchen sink has been thrown at this topic. (That's all a very sheepish way of saying, "I have no idea.")

Is this the part with the # 2 on it in the photo above?

Yep. The horizontal element at the top and attached to the sidepod is new.