Red Bull RB9 Renault

[SectorOne]

Looking at the Williams vortices coming of the endplates they did not have any defining turns in it.
Basically like one long big vortex that looked quite chaotic in it´s behavior.

The RB one is a very clear solid pattern of two sharp turning points that we can see at least.

Edit: Scarbs seems to have a bit on it at Autosport,
http://plus.autosport.com/premium/featu ... -revealed/

[PlatinumZealot]

As per the bullet in a gun.. A bullet obstructs the path of gas through the barrel. and the gas is forced to escape around the bullet through the riffling. The swirl of gas plus whatever frictional effects between the rifling and the bullet causes the bullet to swirl. In an open three inch exhaust pipe this just aint gonna happen on any significant scale without really large fins for rifling no matter how you wish for it.

Oh dear! So gas flow is not altered by surface shaping? Well then, all those who have developed the coanda are wrong? Most interesting.

I have expended too much energy explaining things over the years... so I am just posting a picture of a rifled gun barrel, not to prove a point but just because the picture is pretty cool.

[shelly]

How many rapid direction changes does it do?
And can you actually affect that in any way or is it just creating one and making sure it goes where it should?

the corkscrew shape is probably due to the interaction with the vortex from the truning vanes under the nose, that make the trajectory of the flap vortex spiral.

But the corkscrew effect isnt that just how a vortice looks ? I mean it is a vortex, which is spinning or swirling perhaps. Then if that shapes moves to the side which it does here is most likely based on what you say and i also said above, but the shape is a normal shape no without interaction ?

The picture of the rifling smikle posted above comes handy to explain this. Inside the vortex tube, the particles go along an helix, with a shape similar to those grooves; the "advance ratio" of the particles in the vortex is experssed by a quantity called Helicity (see gordon mccabe blog for a better definition).
The fact that the vortex tube itself it's shaped like a corkscrew is a different thing, and it's a consequence of interactiion with other flows (in this case I think the main influence comes from another vortex).
If you take the example of wingtip vortices on planes, the vortex tube develops in a straight line; inside the tube the pathlines are spirals. There are some examples in the "wing aero" thread where I tried to collect all the vortex images available at the time

[Matt Somers]

Hey guys, caught this in the Beeb footage yesterday and thought it may be of interest... Dry Ice and Fan combo...

http://telly.com/1F99MNP

[allstaruk08]

yeah i noticed that too on sky F1, i replayed it about 10 times. interesting its having that affect at such slow speed from the fan, imagine the affect when the car is on the track

[e30ernest]

Sorry newbie question, but why would they have a fan pointed down the side of the sidepod? Shouldn't that fan be blowing into the sidepod intake?

Pretty impressive to see the effect even with the relatively slow speed of the fan. I'd imagine Newey won't be too happy to have that seen by so many.

Thanks!

[Matt Somers]

Sorry newbie question, but why would they have a fan pointed down the side of the sidepod? Shouldn't that fan be blowing into the sidepod intake?

Pretty impressive to see the effect even with the relatively slow speed of the fan. I'd imagine Newey won't be too happy to have that seen by so many.

Thanks!

I believe they will be looking to cool the electronic components within the Sidepod itself

[krisfx]

Sorry newbie question, but why would they have a fan pointed down the side of the sidepod? Shouldn't that fan be blowing into the sidepod intake?

Pretty impressive to see the effect even with the relatively slow speed of the fan. I'd imagine Newey won't be too happy to have that seen by so many.

Thanks!

I believe they will be looking to cool the electronic components within the Sidepod itself

If it was when they had the dry ice there, it was a clever way to look at flow around the sidepods I think

[SiLo]

Might have missed it earlier in the posts, but I saw the massive cutout in front of the floor of the RB right at the end of the race on TV. It went all the way up to the strake for the exhaust. Is this real or was I seeing things?

[Huntresa]

Might have missed it earlier in the posts, but I saw the massive cutout in front of the floor of the RB right at the end of the race on TV. It went all the way up to the strake for the exhaust. Is this real or was I seeing things?

I saw it too, but im not sure if it was a cutout.

Edit: Its not a cutout, its just some material they put in that area cause if it was cutout we would see black asphalt which we dont and you can see the exhaust gases have burnt a bit at the beginning of it.

[Matt Somers]

Hey guys as this was the last last GP and the last opportunity for us to get shots of the RB9 I asked Mark (Sutton) before the race if he could try and get a shot of the exhaust down the barrel so to speak. Obviously it's a difficult one as no-one wants a camera stuck in by the car but I thought it was worth a punt to try and establish the case for rifling. Anyway as we thought the latter part of the tailpipe at least is smooth...

[Owen.C93]

Looking at the Williams vortices coming of the endplates they did not have any defining turns in it.
Basically like one long big vortex that looked quite chaotic in it´s behavior.

The RB one is a very clear solid pattern of two sharp turning points that we can see at least.

Edit: Scarbs seems to have a bit on it at Autosport,
http://plus.autosport.com/premium/featu ... -revealed/

Do you have any pics/vids of the williams vortices?

[radosav]

Is it possible to have such huge rake without coanda effect from exhaust?
Will RB 10 be able to run that amount of rake ?

[Huntresa]

Is it possible to have such huge rake without coanda effect from exhaust?
Will RB 10 be able to run that amount of rake ?

Nope, its not possible and its also not possible with just the coanda, but its possible with the entire RB package.

[turbof1]

It depends. It's clear Red Bull made huge advancements in the field of vortices. Certainly not by next year, but if they keep gaining on that front they might be able some day to seal the diffuser as effectively without the exhaust plume, just with vortices.