Red Bull RB8 Renault
Red Bull redesigns tunnel underneath exhaust 23 Jun 2012
By introducing yet another new sidepod version, Red Bull is the only team that can compete with Ferrari when you consider the number of changes made to the rear end of the sidepods since the beginning of the season.
The team has now changed the tunnel that goes underneath the exhaust ramp, making the inlet much larger than it was in the previous version. Aerodynamic tests on track had shown that the tunnel was not acting as the team expected because ...
Mon Mar 05, 2012 3:11 am
e30ernest wrote:hardingfv32 wrote:The majority of the exhaust flow does not follow this channel. There is no aerodynamic reason it should.
Brian
Sorry I'm pretty new, but I've been lurking a while.
Could airflow over the sidepods push exhaust gases down the channel at certain speeds?
Not at that proximity.
"I was blessed with the ability to understand how cars move," he explains. "You know how in 'The Matrix,' he can see the matrix? When I'm driving, I see the lines."
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n smikle
- Joined: 12 Jun 2008
Mon Mar 05, 2012 3:16 am
n smikle wrote:Not at that proximity.
Why not? This whole game is about using air flow to direct the exhaust. What makes that particular scenario any different?
EDIT: I've found myself lately weary with the incredulous tone of certain questions asked on the forum. For that reason, I'd just like to say that my questions here are posed without such a tone.
Last edited by bhallg2k on Mon Mar 05, 2012 3:18 am, edited 1 time in total.
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bhallg2k
- Joined: 28 Feb 2006
Mon Mar 05, 2012 3:17 am
Chuckjr wrote:Adrian Newby wrote:http://img15.imageshack.us/img15/9483/wiesau.png
. The black, heat-resistant portion of the sidepod is probably changeable, in order to tune the splitter to the speed of the fastest corner on each particular circuit.
That's brilliant. That sounds like something Newey would do. That's a friggin genius idea.
there could be another air channel flowing inside the bridge into floor duct
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CHT
- Joined: 14 Apr 2008
Mon Mar 05, 2012 3:29 am
bhallg2k wrote:n smikle wrote:Not at that proximity.
Why not? This whole game is about using air flow to direct the exhaust. What makes that particular scenario any different?
EDIT: I've found myself lately weary with the incredulous tone of certain questions asked on the forum. For that reason, I'd just like to say that my questions here are posed without such a tone.
They didn't have to make all of that fancy bodywork if they wanted the exhaust to go where the blue line ends up. A simple groove in the side pod can achieve that.
Looking at the car the exhaust just won't go upstream to turn under that bridge - It has to push back the oncoming air to do that, and because the exhaust stream initial momentum is going to the rear it's impossible for it to turn backwards unless you had some object pushing it in there.
"I was blessed with the ability to understand how cars move," he explains. "You know how in 'The Matrix,' he can see the matrix? When I'm driving, I see the lines."
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n smikle
- Joined: 12 Jun 2008
Mon Mar 05, 2012 3:30 am
hardingfv32 wrote:The majority of the exhaust flow does not follow this channel. There is no aerodynamic reason it should.
Brian
How about we just agree that the portion of the exhaust flow that Adrian Newey intended to follow that channel does indeed follow that channel.
Last edited by Adrian Newby on Mon Mar 05, 2012 3:51 am, edited 1 time in total.
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Adrian Newby
- Joined: 7 Feb 2012
Mon Mar 05, 2012 3:42 am
No you misunderstand. I was replying to a poster that it cannot be the blue line even at low speeds. Read back.
"I was blessed with the ability to understand how cars move," he explains. "You know how in 'The Matrix,' he can see the matrix? When I'm driving, I see the lines."
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n smikle
- Joined: 12 Jun 2008
Mon Mar 05, 2012 3:44 am
Isn't it past your guys bed time? You got two weeks of meaningless techno-babble that will inevitably get deleted from these threads.
"I was blessed with the ability to understand how cars move," he explains. "You know how in 'The Matrix,' he can see the matrix? When I'm driving, I see the lines."
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n smikle
- Joined: 12 Jun 2008
Mon Mar 05, 2012 3:47 am
Chuckjr wrote:Adrian Newby wrote:[img]http://img15.imageshack.us/img15/9483/wiesau.png[img]
. The black, heat-resistant portion of the sidepod is probably changeable, in order to tune the splitter to the speed of the fastest corner on each particular circuit.
That's brilliant. That sounds like something Newey would do. That's a friggin genius idea.
The red line in that pic is wrong imo.
If the exhaust gases are being pushed out at any kind of speed relevant to actually create any kind of notable downforce, they wont be swooping down like that.
More likely the gasses will be spread along the top AND bottom of the rear i.e some going along with the green line and some going along with the red, but not with such a sharp dip.
1.
At high speed, air from the side of the side pod will push exhaust gases along the side of the car and air from the top will follow along with the green line.
2.
At low speed, even if we assume that the air from the top and side of the sidepod is diminished enough, the exhaust gases wont simply drop downwards like that.
Remember, there is more than one directional curve on those exhaust cutouts, one of which actually follows round towards the middle of the rear bodywork.
There is a reason why their new chassis has had so much cut away at the rear of the side pod that the green line follows.
Uploaded with ImageShack.us
This is more in line with what I see happening.
The flow from the sides and above pull the gases along with them along the contour of the car, as opposed to just dipping straight down.
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GrizzleBoy
- Joined: 5 Mar 2012
Mon Mar 05, 2012 3:47 am
n smikle wrote:e30ernest wrote:hardingfv32 wrote:The majority of the exhaust flow does not follow this channel. There is no aerodynamic reason it should.
Brian
Sorry I'm pretty new, but I've been lurking a while.
Could airflow over the sidepods push exhaust gases down the channel at certain speeds?
Not at that proximity.
Sorry I didn't mean the tunnel/bridge (blue line), I meant the carved exhaust channel (red line).
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e30ernest
- Joined: 29 Feb 2012
Mon Mar 05, 2012 3:54 am
Uploaded with ImageShack.us
This is a more accurate view of where the gases will go imo.
The pressure from the airflow above (green line)and the sides (blue/purple lines)should drag the exhaust gases along with them and converge somewhat.
The gases wouldn't just jump down like that unless they had nowhere else to go and had no other influences on them. Even with those variables satisfied, the speed at which those gases need to be flowing to produce any kind of relevant/usable airflow would still mean drastic angling of flow wouldn't be realistic.
The channel may look like it's leading down towards the end, but it seems to be just the shape of the car more than anything.
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GrizzleBoy
- Joined: 5 Mar 2012
Mon Mar 05, 2012 3:55 am
n smikle wrote:No you misunderstand. I was replying to a poster that it cannot be the blue line even at low speeds. Read back.
It was a misunderstanding with me as well. I never thought the exhaust would follow the blue line, but I couldn't see any reason in the world why it couldn't be shifted between the red and green paths depending upon airspeed, which is what I thought you were saying is impossible.
EDIT: In much the same way that NBC gave America the terms "red state" and "blue state" with their on-screen graphics during the 2000 presidential election, I think whoever drew that diagram may have just endowed the different flow paths on the Red Bull with similar monikers.
Last edited by bhallg2k on Mon Mar 05, 2012 4:02 am, edited 1 time in total.
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bhallg2k
- Joined: 28 Feb 2006
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