How F1 Wind Tunnels Work
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- Опубликовано: 12 ноя 2020
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Wind Tunnels are powerhouses of F1 research. But how do they work and how to teams extract information from them?
Gary Anderson article on Wind Tunnels: the-race.com/formula-1/gary-a...
Doppler anemometers: automationforum.co/what-is-la...
Honda report on wind tunnel use: www.f1-forecast.com/pdf/F1-Fil...
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2:22 Oops. You have summoned Dustin from Smarter Everyday
Destin. Or Dusty if you are Stuff Made Here.
@@EmeraldMack992 I don't why I just knew these two parts of youtube were connected by a lot of other people
@@RandomGuy-ol6wi yea, I don't even watch F1 or like it yet I watch all of chain bears videos
😂
Wind goes in, wind goes out. Nobody can explain that
Wind goes BRRRRRRRRR
Finally we have a Ferrari engineer on the channel!
@@michelemariotti8198 can confirm, as a Ferrari Engineer i make sure we get as much wind into our car as possible, that way we get more wind out to produce more speed.
@@deeznoots6241 wind = energy and energy = POWAAAAAAAAAAAA!!!! So yes I understand why Ferrari need you. Good job, keep at it!
Chickens go in, pies come out
Here I am, thinking they just put a fan in front of their car and look how the air moves...
Fan spin , wind go woosh
I mean in simple terms, that’s exactly right.
@@malikemad4 yea, science!
They stick pieces of yarn to the body with masking tape to REALLY see the air, you know?
@@dand1585 🤣
Interviewer: "What makes you qualified to be an aerodynamicist for our f1 team?"
Me: "I've watched all of chainbears videos and read Adrian Newey's autobiography"
F1 team: "you're hired!"
As a first year student in Aero Engineering who is yet to study anything that isn't calculus, this is oddly specific.
Said Ferrari
That's literally me 🤣
Well I watched a documentary about Williams from the early 80s with Ross Brawn as their aerodynamicist as well!
Having been doing this and just applied to F1 teams I wish this were true 😂
I discovered this channel like 2 days ago and since then I have literally been doing nothing but binge watching your videos, it's like sooo addicting
like, that's like, awesome, like like like
I know the feeling 😉
relatable
One thing I’ve learned about this channel is that even if a topic doesn’t seem interesting, he finds a way to make it interesting by diving into it
@@thesnitch7 you sound like a Californian
Everyone else: wind tunnels
Me: ooh he's got a SM58
How can you tell it's an SM58 specifically? I'd think if most people are going to do voiceover work and want to pick something from Shure's offerings, it'd be an SM57B.
@@lostalone9320 I didn't say SM57. I said SM57B. I didn't notice that he had a face cam on. I usually skip the ad.
Wish I had an SM57, though. And a Peavy 6505+. Different use case, but that'd be killer.
@@ThatBeTheQuestion there's no such thing as an SM57b unless Google and the Shure website are lying? Maybe you mean something different all together?
@@ThatBeTheQuestion The SM57B really doesn't exist - surely you're thinking of the SM7B as has been suggested? And yeah it's a SM58-shaped Shure mic, so there's not much else it could be. It's a durable yet high-quality mic at a good price, and I can see why he has one. I'd tell Stuart to get a SM7B for that warm radio sound, but given the high and steadily improving quality of his existing VO it may be a case of diminishing returns.
Wait... Why they all start with SM?
Knowing quite a bit about computer simulation, I highly doubt we'll get rid of wind tunnels any time soon. Fluid dynamics (air is also a fluid) are incredibly complicated to simulate, not to mention things like resonances that come along with it. Even if we have the software to accurately simulate it (which I don't think we do at the moment, though I could be wrong), it'll be quite slow and it'll have to start over for every small change you make to the setup (like changing the angle the wind comes from). So, while simulations can be quite useful, I don't think they'll be replacing wind tunnels any time soon.
Video about laminar flow??? Someone call Destin from @smartereveryday.
I'm so glad I wasn't the only one who thought of Destin when he said laminar flow
Ferrari: "SOMEBODY WRITE THAT DOWN, WRITE THAT DOWN!"
My ex girlfriend actually did her master's in aerodynamic engineering and was aloud to use the Williams wind tunnel, she was working on a way to increase the max speed they could use rather than hit the make speed of the tunnel then extrapolating out from there because obviously they can't hit 300mh speeds with a wind tunnel...so they hit up to like 60-70 and then mathematically increase the speed to see what would happen....as such she was working on a way to make that obsolete and be able to get it up to actual race speed...she never could quite finish it before end of her course but Williams has carried on her work even to this day....as far as she's aware from talking to old friends who still worked there to recently and keeping track of the idea in mags an papers..
Edit: I haven't fully explained it very well in the post, I've just re read some bits and notice that...
There is another post lower down which explains it abit more an better, she wasn't trying to allow the tunnels to run at any faster speed she was trying to find a way to reduce the need for the mathematical guessing how a part would behave at the top end because of the limits of the tunnels.
This explains why Williams have no points!!
That's really cool.
Thats incredible
Chainbear just said (4:05), that there is limit to how fast teams are allowed to run their windtunnels. So was your gf working on ways to break the rules ( like Ferrari with the fuelflow meter ) or did I misunderstand something?
@@narancs5 I thought only I didn’t understand that speedy speed part of the post.
I find it best to think about wind tunnels in this way:
It is easiest to have your instruments and the thing you're interested in stationary. (Think how difficult it would be to have very precise instruments attached to a car as it is haring around a track in still air).
Now your problem is having the moving air mimic stationary air, while actually moving past your instruments and the test subject.
Still air doesn't move much, so you have to make sure the air interacts with itself much less than it interacts with the thing you want to measure.
Wind tunnels trick the object into behaving as though it is moving fast through still air, instead of sitting still in fast air.
So the big problem to solve is how to make the air behave as though it isn't moving, even though it's screaming around a loop very quickly.
I find wind tunnels and cfd animations fascinating to look at. Something about seeing the air move, which is generally invisible gets me excited. It's like I'm looking at something I'm not really allowed to. Rebellious.
Extreme liver challenge: Drink every time he says “airflow”
Liver.exe has stopped working.
Life.exe has stopped working
Universe.exe has stopped working
In the f1 2020 my team the one bloke is litteraly running a leaf blower on the car
yeah but its a branded lead blower
Yes, but I think it's used to cool the brakes and radiators.
@@roquesales_- wwwwwwwhooooooosh!
@Pauline Weinberger no i dont mean the track leaf blower i mean in the aero department in my team the guy uses a leaf blower to blow wind over rhe car if you dont have a good budget
Same 🤣
I have my own wind tunnel and it's very good for exhaust gasses!
Also good for upsetting people in confined spaces.
you're adorable................
@@thesnitch7 That's what my girlfriend tells me.
When I'm not using the wind tunnel that is...
I wonder if thats how charlie is so much quicker than seb??.
its awesome to see how far you've come since the first video on aerodynamics (slipstreaming vs dirty air)
F1: the air needs to be completely undisturbed for the readings
Also f1 teams: we gonna put a massive pylon in drivers seat cause why not
cause: a person or thing that gives rise to an action, phenomenon, or condition.
BEcause: for the reason that; due to the fact that: The boy was absent BEcause he was ill.
To be fair its the only way to attach the car securely whilst also not disturbing the vital parts of the car being tested
@@Garfie489 And also, that part is already inaccurate anyway as normally there would be a driver :D
@@thesnitch7 Stop whining, everybody understood what he meant with that.
@@VGOM2000 in order to 'stop' whining I would have to be 'continuing' to whine.
Given my comment was days ago - I have to ask what the hell are you whining about, you insufferable whiner?
You always seem to blow me away (no pun intended) with your animations. They always make things so clear and easy to understand. Top job!
simple:
just throw some air onto those cars
how hard can that be!
@@rishi0299 you want the long answer 😂?
Well... you have the boundary layer, flow speed, viscosity, cables, lengths, model sizes and how that affects what you’re testing, closed test sections, opened sections, jet types, fans, power...
And more 💀
@@antonydigerlando5195 fluid dymamics is oh so cool and oh so difficult
@@johanpacheco22 read a textbook on some of it... it’s interested but very hard 😂
@@antonydigerlando5195 I'm just joking around 😂
CB: Here's a nice video about wind tunnels!
Me: lel PIV
I'm a huge fan (In wind tunnel).
Mercedes: silky air,laminar flow, wind in wind out
Ferrari: "Haha the wind goes Brrrrr"
As a project for our fluid dynamics class,i built a tiny wind tunnel,that was a very cool experience and I've learned a lot, design the wind tunnel and calculating drags,fan speed and ... Were so cool
What gas do they use so you can see it?
I really like your videos, they are simple and easy to understand and condense complex topics into simple, easy to watch videos. Thank you so much for making these videos :)
I second that.
Keep Your Hands Off My Closed Loop Wind Tunnel!
The amount of work and preparation in this video is highly respectable. I can't imagine what I'd do if I had to make a video to explain this.
This was an extremely well made and informative video, keep them coming!!!
Awesome video. Very informative. Keep up the good work.
I love this amount of weekly videoos thaaanks you're awesome
Stuart you are very smart man , u answer all the questions in my head about F1 n u make it sound easy, I never got bored of ur material, keep it coming mate.
Your videos are always good but this one is especially great. Haven't expected that when I saw the video title! Great work. Keep it up!
Best F1 RUclipsr. Without parallel. I almost enjoy your videos more than the race, Mr Bear. Thank you for your efforts.
I know how wind tunnels work, I just love watching any new chain bear video! Great work as always
yes this comment right here officer
Excellent info, thanks!
.....every time I watch your channel I learn something I didnt know or understand before. thanks my g (school is never out, jus done differently)
that's a great video and those are some wonderfull animations that help explaining the topic, although i think that in situation like 9:50 with those three cars, it would be easier to detect the animations i you turn down the bright level in the other two, so light guides the eye, or maybe it was just me and it didn't affect anyone else, anyway great video thanks for explaining this kind of complex stuff to mundane people like me.
This video was deep! Loved it. As usual, i learned a ton, all while realizing how much i don't know! Thanks again!
Thank You. Stellar explanation.
Awesome simulation and explanation
This us really useful, cheers xx
Yes, the detailed technical videos are back!
“PIV” 😂😂😂😂😂 I love this channel man
What's so funny about the abbreviation for Particle Image Velocimetry?
@@jsquared1013 P****** in V*******, if you've spent any time in that part of the internet
Hey Chain Bear. I love your videos, but I want to propose a topic for a future video. Can you explain *graining* ? And why it occurs, while others don't have at? And how some drivers are able to drive it away? In the last race in Turkey some drivers suffered from really harsh graining, and it's really hard to fully understand it for normal people!
Informative video, gr8
Really great video
Dunno about others but my gut suggests that wind tunnels will never be 100% phased out just because CFD is still based on 'approximations' so cannot tell the whole story alone.
That is to say the CFD calculations are computationally hard. And there does come a point where the software has to stop doing the calculations and say 'yh, thats a good enough approximation' otherwise you would be running the calculations for an infinite time. And with the inherent aspect of chaos theory (small varuations to initial conditions massivly changing the output) more accurate simulations require more computation of more 'particles' etc.. etc..
I may be wrong, but one huge benefit of wind tunnels is the ability to compare the real world with the CFD models, allowing to to verify the CFD calculations and make tweaks to the CFD calculations to better match the real world model.
It might be plausible that the CFD models become so good that the extremely tiny gains gained by verifying the data with the wind tunnel may not be worth the cost of doing so. But my gut tells me that in the race for 1/10th second gains, plus the F1 regulations evolving and changing to introduce challenges means its just unlikely.
Had to build on of these for my extended essay, pretty fun project
Lots of cool info there. I had no idea they were so complex. Or that they were limited in speed and to scale models.
Intro looks great with 3d solids, shadows, negative effect and minimalist effect.
Great video Stuart! Can you also make a video about CFD & it's applications in motorsports?
Awesome video
Thanks for the laugh. I had paused the vid at 0:39 to get a drink. Walk back in and my GF asks. What do horses and a guy with a camera in field have to do with F1 wind tunnels?....
I said where do you think the term horsepower came from? I think the smirk on my face just earned me the I have a headache tonight dear award......
Well the horsepower was actually proposed vaguely about measures of work for the "average horse" (actually a good nugget of curiosity).
Not all wrong there, despite not being what this video is about xD
Excellent explanation. The only detail I would add is that they move the road surface not just because of the airflow under the car but also because a rotating wheel affects the airflow differently than a static one especially at the rear of the vehicle where turbulence from the wheel impacts the performance of the diffuser and creates drag.
That was a smooth video.
Smooth operatooooooorrrrrrrrr!
Actually theres very little laminar flow in a tunnel, it's almost entirely turbulent. the trick is to get turbulent intensity as low as possible
Exactly right. It’s never laminar in a WT, and turbulence levels are almost always higher than in free air.
Who thought of Smarter Everyday when Chain bear said laminar flow
Excellent vid. Cant hear lamina flow without thinking of Dustin (s.e.d). Allways good to hear Anderson get a mention, i could be wrong but was it not Gary Anderson that invented the pito tube rig ??.
This video tickled my brain in all the right ways
Hi Chainbear. Can you do a video about fuel management?
Been searching all your videos to no avail.
Probably a stupid question but wouldn't it be more useful for the teams that don't expect to be out front to test in turbulent/chaotic air flow? Like obviously getting a baseline understanding for qualifying and seeing if parts work as expected is necessary but surely seeing how the car behaves and can be improved in traffic would be more useful to some.
You first have to understand the dynamics of your shape in near perfect conditions. Otherwise you're throwing in a bunch of variables that you don't necessarily know how to account for.
I laughed a little too hard when he said smooth and air flow is going to lose its meaning lol good shit chain bear.
1) I love you & everything you’ve done to teach me more about the intricacies of F1
2) why do they have to use 60% models, why can’t they use full scale models
Making a full scale model can be quite expensive and time consuming and if any changes are required, it is easier to do it on a smaller model. Testing is done on certain prototyping principles and laws and conditions (lot of science stuff) and basically use something similar to ratios and proportions (in layman terms)
@@rockingttalent3666 thank you!!
@@rockingttalent3666 say it. non dimensional numbers have to be the same
@@zequijusti haha. Correct. I just wanted to explain in much simpler terms.
Most teams don’t have a full scale tunnel. They are much bigger and much more expensive to run so FIA outlawed full scale completely.
Great video as always Chain Bear! However, a question popped-up as I was watching it. How do they simulate track conditions on the wind tunnels? Because air rarely is smooth and steady on a racetrack (unless you are Hamilton)
I know this doesnt have a lot do to with this video but I just want to tell you chainbear that you are literally helping my school work.
So we have a important presentation that we gotta make about something that has with technology to do. After 2 hours of being lost on what to talk about I decided to pick F1 cars, and while it's a big thing to talk about, your videos are the best.
I have ready watched your videos before, but I've been binging these videos again and they're phenomenal
The way you talk about stuff makes someone actually understand it like aerodynamics and wind tunnels.
TlDr: ChainBear is literally saving my grades, appreciate you man
This channel really doesn't need an intro
chain bear is so underrated
Great video as always, but do you know if you are allowed to use two models of cars to simulate driving behind another one or do they just simulate that as well or not at all?
Hey, I've been wondering. Where do you get your information? Because your videos are very informative and I've just been wondering where you get information.
Very informative video! Can you please favourite this comment, because there is really lovely video out there by Willem Toet who worked for Sauber for many years. He shares really cool inside information which you mentioned in this video, but Toet explains how did they come up with certain methods and so on. Great video, I'd like to see more quizes though ;)
So did Williams allow you to photograph their computer?
That was a very smooth video Stuart. Sorry someone had to say it.
PIV sounds awesome
Question: Why is it better to have the flow of air as smooth as possible? When running on a track, the air doesn´t have a laminar flow or does it?
Excellent presentation, as always. I'm interested to know, given that the conditions in a race won't match those in the wind tunnel, is this a major issue?
Great question. There is no way to truly get a simulation of actual race day airflow because of the unbelievably large number of data points. Moreover, no air is truly laminar, as there is bound to be disturbances and turbulences due to a varying number of factors. So teams had a choice, test your car on a racetrack and get data from that, which was both banned by the FIA and gives less data than the wind tunnel, or make the air behave predictably and understand how the car "should behave" under ideal circumstances, and get a ton of usable data. The difference in performance in the wind tunnel versus racing conditions exists, obviously, but you won't miss any major flaws in the wind tunnel that show up on race day.
Appreciate the response, thanks, and that makes sense, best option chosen.
What app do you use to make you animations because I would really love to know
of course this comes out a day after my paper on wind tunnels was due haha
hey chain bear, thank you so much for your videos. absolutely brilliant. I have a question. How can you explain the competitiveness of this season? Yes Red Bull came out a lot better this year due to the high rake being the favorite to my understanding, but recently we have seen a Red Bull that is arguably all around better than the Mercedes, even at the tracks where Mercedes were to be stronger. Also Land Norris out of nowhere is on P2. George Russell somehow qualifies P9 when His williams has sat in P17 all year. Brilliant driver but how does he go from P17-P9? This year has a lot of shakeups. I know about the flexi wing as you have made that video, but perhaps a video of just why this year is so competitive compared to the past years of stagnant racing? I mean giovinacci is P5. The Aston Martins are strong. Its very interesting... Why is this? Parts improvements? if So, what parts? Thanks
We had a cooling problem on our Van Dieman RF88. We tied some red wool to the front suspension, ragged the car past the pits at Silverstone, took photos of it as it drove by and established that the air was being shifted up over the radiator cowlings. Wind tunnel? Pfff. We learnt from sailing telltails 😀
2:22 *A wild Smarter Every Day Appears*
1:24 "I want to go deeper cuz I luv u all"...aww thx man.
So if the teams are upset about "dirty air" when behind other cars in corner, is there not a way to test "dirty air" in the tunnel?
Yes, they can try some variations of perturbed flow, but not the exact configuration produced by another car.
To produce a valid simulation you need the correct pattern and for that you'd need to measure the flow behind every car of every team.
The best you cn get are simulations of your own two cars runing close to each other and maybe some data on generic turbulance in winter testing =)
To keep up with SWIRLIES F1 aerodynamics teams have come up with some...BOBBLAGE
This would have been a very nice crossover between Chain Bear and WTF1
I have an idea for an episode. What do they mean by "balance" and how is it adjusted? They sure do talk about it a lot.
Howdy Stuart!
Didn't expect that method to be the less invasive one
Whenever you said "laminar flow", I got flashbacks from Admiral General Aladeen.
Wow, there's a lot to it.
The tunnel itself to start with.
Can you do a video about the f1 simulator? The only thing that i know is that they use the isi rfactor pro software wich is a more complex software then rfactor 2 wich is on the consumer market.
Edit:
Love your vids!❤
Does it matter what type of airflow comes in to the engine Laminer disturbed or turbulent? Is one more efficient than the other.
@ChainBear lately i was thinking of inline 6 and v6 engines and one characteristic pros of an inline 6 engine is that its balanced and in f1 the engines have to be pretty well balanced in order to run smoothly, so that makes them more complex, could f1 cars have inline 6 engines or not?? like is it a viable option??
This man chuckled at PIV
I heard a story that a LM team (can't remember if it was Ford in the 60s or Porsche) tracked the airflow by seeing where the dead flies were on the car. They noticed there were none on the rear wing which meant the air wasn't flowing over the wing as intended
My recollection is it was either testing for the Ford GT40 project or Carroll Shelby's other LeMans project, the Daytona Cobra. I know it had to do with Carroll Shelby.
Is there a rule limiting model size and wind speed for tests, or are there practical reasons? I've been at the Sauber wind tunnel about 10 years ago and that thing is totally big enough for a full size car, and can apparently go over 300km/h, so they could just put the real car in it if they wanted to
What do you use to animate your videos?
I wish my physics teacher was atleast 10% as good as you. If so I wouldn't be watching youtube all day long with soo random pointless video. Ps: your videos are the best one's and I wait for them daily to pop up on my feed😍😭
I remember yeaŕs ago seeing a BBC Horizon documentary about fluid dynamics in which they said that nobody understands It! If they could airliners (for example) would save stacks of fuel-they were even employing some very clever people to just think about it all day! I'm hoping they've progressed since then!
I think "nobody understands it" is a wild exaggeration. The other issue with aircraft is that they are moving fast enough to have to deal with compressible flow, which complicates things even more.
@@jsquared1013
it was years ago! Maybe somebody does understand it now, but (as I said!) People at the time were employed just to stay home and think about it.
And, given that airliners aren't saving about 40% of their fuel since then, (which iirc, was the figure mentioned in the programme) it makes me think that not that much has changed
What a happy ending 🍻
How about a video explaining correlation problems
Why is only laminar flow simulated, and not e.g. dirty air creater by cars ahead? This would also be an area where windtunnels will stay ahead of CFD for a good while
How dose creating a perfect wind flow in a wind tunnel compare to race day. Is the wind on race day going to be perfect. Or is it going to be disturb flow or turbulent flow? Does the car require a perfect condition to operate like it did in the tunnel
@Chain Bear Why is the air speed restricted to 50 m/s? I am guessing it's the same as the 60% a restriction of the regulations? There are supersonic windtunnels in aerospace engineering, so it's not a physical limitation.
operating costs, it takes crazy amounts of energy to make a wind tunnel work, supersonic wind tunnels only work for a couple of seconds per test and their test sections are much smaller than a 60% sized f1 car