2012 Exhaust Blowing & Coanda

[amouzouris]

the exhasut pointing straight up would disturb the airflow going to the rear wing and beam wing to a certain extend...I dont think that teams would like that....they would all protest..

[Huntresa]

the exhasut pointing straight up would disturb the airflow going to the rear wing and beam wing to a certain extend...I dont think that teams would like that....they would all protest..

Well care tbh, It would be the exact same for everyone so its not like it would disturb someones car more then another, and i assume they would build the cars around it so it would disturb as little as possible.

Or they could raise it even more above the sidepod so the gases actually just comes out in thin air and not on the actual bodywork.

[raymondu999]

Well I guess that would compromise some teams' sidepod philosophies - so the teams might not be too keen on that as it means they can't get an advantage in that area. I for one am not keen on seeing 24 identical sidepods.

[Huntresa]

Well I guess that would compromise some teams' sidepod philosophies - so the teams might not be too keen on that as it means they can't get an advantage in that area. I for one am not keen on seeing 24 identical sidepods.

Trust me you wouldnt get 24 identical sidepods cause lets face its still FIA we are talking about and when have they ever made a rule that didnt have a loophole in it?

[raymondu999]

If you literally spell that an exhaust must have X amount exposed, and at a specific angle, with a box that must have no bodywork in it; sounds pretty solid to me. You're pretty much mandating a spec exhaust exit. Some will still try for the Coanda effect, but to achieve the optimum to do that they will be converging one single sidepod shape; and you have to have the sidepod there in the first place to hold up the exhaust.

[Gridlock]

Brian, come back, just because actual real evidence has produced itself to prove you and your diffusers blowing naysaying wrong doesn't mean you shouldn't persevere! Bring out your diagram again!

Did you even watch the race? The exhaust plume was diving down the bodywork at racing speed, even at trundling speed. I'm sure it's on YouTube if, despite your evident love for F1, you managed to miss the race.

[hardingfv32]

Brian, come back, just because actual real evidence has produced itself to prove you and your diffusers blowing naysaying wrong doesn't mean you shouldn't persevere! Bring out your diagram again!

1) Carefully read all my posts on this subject. You will not find that I ever stated that the top of the diffuser could NOT be blown. It is my claim that the side of the diffuser next to the tire can not be sealed or the flow used to form a pressure reducing vortex. These photos do nothing to disprove that claim. The exhaust flow needs to get down to the floor at the beginning of the diffuser/tire gap to have any affect.

2) Based on what we know about the speed of the exhaust flow after leaving the exhaust tip, There is no reason to think that the flow of the oil smoke is nothing than the oil smoke particles being entrapped in the body flow.

Brian

[Huntresa]

If you literally spell that an exhaust must have X amount exposed, and at a specific angle, with a box that must have no bodywork in it; sounds pretty solid to me. You're pretty much mandating a spec exhaust exit. Some will still try for the Coanda effect, but to achieve the optimum to do that they will be converging one single sidepod shape; and you have to have the sidepod there in the first place to hold up the exhaust.

Well they could also do it like the exhaust has to end like that but above the sidepod incased in material, like a chimney, and then it could be located within certain cm on the sidepod, so they could shape the chimney to be aerodynamic on the sidepod and as it doesnt need to be in the exact same area there could be diff solutions.

[Gridlock]

Brian, come back, just because actual real evidence has produced itself to prove you and your diffusers blowing naysaying wrong doesn't mean you shouldn't persevere! Bring out your diagram again!

1) Carefully read all my posts on this subject. You will not find that I ever stated that the top of the diffuser could NOT be blown. It is my claim that the side of the diffuser next to the tire can not be sealed or the flow used to form a pressure reducing vortex. These photos do nothing to disprove that claim.
Brian

So you didn't watch it then?

[MIKEY_!]

Ok, place the exhaust exit on the floor edge a specific distance ahead of the rear wheel centre line and at a specific angle (outwards) with regulated bodywork so the shape of the floor in that area can't differ much from what we have now. And 0 degrees horizontal angle.

Now, mods remove this post and the previous ones not relating to the williams itself to whichever thread you deem appropriate. cheers

[King Six]

Well I guess that would compromise some teams' sidepod philosophies - so the teams might not be too keen on that as it means they can't get an advantage in that area. I for one am not keen on seeing 24 identical sidepods.

Trust me you wouldnt get 24 identical sidepods cause lets face its still FIA we are talking about and when have they ever made a rule that didnt have a loophole in it?

I'm sure the FIA deliberately keep the rules slightly open in order to maintain at least some of F1's spirit. It would be extremely easy for them to rewrite the rules for 24 essentially spec cars, and it would also be extremely easy for them to rewrite the rules for 24 outlandish beasts that cost ridiculous sums of money. The idea for them is to have flexible enough rules to keep the sport what it is, whilst also trying to curb back on expenses and keep safety in check, and that's what's hard.

[hardingfv32]

Car is stationary, so no coanda effect dragging the exhaust gasses down. The exhaust pipes point upwards, per regs., so any exhaust smoke will naturally rise.

Isn't the Coanda Effect related to the interaction of the exhaust flow to surfaces near the flow? Why would body flows have anything to do with the Coanda Effect?

Brian

[volarchico]

It can also be used to describe the tendency of airflow caused by forward movement to follow the curvature of the bodywork. No wonder we have pages and threads worth of pointless Coanda bickering.

[Nando]

Nice and easy way to see the effect is taking a round glass and hold it under the tap with water running.

[raymondu999]

Nice and easy way to see the effect is taking a round glass and hold it under the tap with water running.

Car is stationary, so no coanda effect dragging the exhaust gasses down. The exhaust pipes point upwards, per regs., so any exhaust smoke will naturally rise.

Isn't the Coanda Effect related to the interaction of the exhaust flow to surfaces near the flow? Why would body flows have anything to do with the Coanda Effect?

Brian

That's my point - it's about the relationship of the surface to the gas/fluid, nothing to do with motion required. There was a