This was outstanding. I've really gained a lot of respect for Sauber. I could listen to that guy talk all day, he really knows what hes talking about there.
Yes I totally agree about listening to that guy. Maybe it’s the way he uses his hands that fascinates me so much….and he has a cute personality with that adorable tease…
*44 minutes of expert knowledge on how wind tunnels work!* Sauber F1 Team Head of Aerodynamics, Willem Toet, explains EVERYTHING you might want to know about wind tunnels, wind tunnel testing and F1 wind tunnels in particular! CONTENT and TIME CODES (click on the time code to jump directly to the respective chapter): 00:00 - *Basics of Wind Tunnel Design* ► basic principles, history ► open-circuit vs closed-circuit wind tunnels ► energy efficiency ► fan, foundation, seismic mass, vibrations ► air rotation and turbulence 04:58 - *Heat, Cooling & Airflow Optimisation* ► heat, cooling & radiators ► airflow optimisation 08:40 - *Test or Working Section* ► test section, settling chamber ► closed-jet, slotted-wall, 3/4 open-jet ► contoured-wall, adaptive-wall ► aerospace vs motorsport wind tunnel technology ► boundary layer reduction in motorsports 15:16 - *Model Motion System & Tyres* ► airospace vs motorsport model mounting systems ► model motion: yaw, pitch, roll ► wheels-on vs wheels-off, wheel steer ► wind tunnel model tyres vs. race tyres 20:51 - *Moving Ground Technologies* ► rolling road ► development: synthetic rubber vs steel belts ► development: suction control ► friction, cooling ► air bearings & vacuum pumps 27:15 - *Measurement Tools* ► load cells (6-/5-component) ► wheel load cells ► tyre patch load cells ► downforce, side-force, drag-force ► pressure sensors, motors, capillary tubes 32:04 - *The Myth of Smoke in the Tunnel* ► smoke wands, rakes, airflow visualisation 33:43 - *Model Size & Regulations* ► 50% vs 60% vs 100% model testing ► translation of model sizes and speeds ► FIA regulations and testing limitations ► wind-on restrictions We hope you enjoy this video! If you do, don't forget to *give us your thumbs-up* and please *feel free to share* the video! A big THANK YOU to Alex Humberstone for providing the *sound track* for this video! Listen to more of his tracks on soundcloud.com/alexhumberstone #F1 #SauberF1Team #Formula1 #FormulaOne #motorsport #aerodynamics #windtunnel #F1explained
Jscottie2600 Thank you VERY much for the great feedback! It's not easy to find a good compromise between depth and detail of information and keeping it interesting and understandable for people without a degree in engineering :-)
@Sauber F1 Team - *_never_* be afraid of getting _”too technical”_ with *F1* fans... we’re *_starved_* of technical info on the sport and while we may all not be engineers, many of us work in some technical field and *_love_* to learn stuff like this !!! This video is amazing and I hope to see more like it !!!
I probably enjoyed this more than the Cut Section Videos. Thank you so much Mr. Toet, the team behind this video and indeed everyone at Sauber who pushed for making this stuff open for the public. I've learnt more from this video than I ever have during all the surfing hours on F1 Aerodynamics. Thanks so much once again Sauber!
Wowed by the great feedback, Shirish Potu, thank you! Make sure to watch all of our TECH BITES videos, too (see TECH BITES playlists). Some gems in there, too!
26:23 _”...testing at 80 meters per second...”_ that’s *178.9549 mph !!!* That is an *_astounding_* speed for the rolling road to move... seriously incredible engineering kit for it to move at that speed and remain a stable platform for testing !!
Thank you for sharing this insight on wind tunnel in F1. It is very rare to have the opportunity to get to knowing technical features in F1. It were 43 minutes of pure delight and knowledge improvement. Thanks
This is an incredible video! I'm personally in mech eng school however I really find aerodynamics much more interesting. Wind tunnels are an incredibly interesting piece of technology and knowing more about them is very enticing
Extremly awesome video! Not only the man has (obviously) great knowledge of the topic but he also have very good talking skills, makes it really enjoable to listen. Thank you very, very much :)
I previously watched the 8 Part series but it is brilliant to see it altogether. This should also be a FIA rule that these type of documentaries are produced, secrets can still be kept however information can still be produced in a documentary like these. I know Willem was born in the Netherlands but since he grew up in Australia we will claim him ;).
Sauber F1 Team As a motorsport student at Cranfield, I found the technical details very interesting. Moving walls, the moving floor and air bearings, etc. keep up the good work ! Marc
Sauber F1 Team Of course. I was just sad it ended :) One for the cars suspension and in detail on how all works and evolved....Then I would become a life long fan! :)
I got a bit confused, before the radiator you stop the swirl or is after the air passess trough the radiaor that it is not longer sppining at macroscopic scale?
Sauber F1 Team Wow, I didn't really expect a response this quickly. Thanks. On the subject of who built the first wind tunnel, NASA seems to think that the Wright Brothers had one in 1901 (wright.nasa.gov/airplane/tunnel.html) which would have been before Eiffels 1905/1906 efforts, and wikipedia (I know, I know ...) says Wenham built one in 1871.
Great stuff, thanks for the info! The important thing is that someone had the idea and whoever did would definitely be majorly impressed by today's facilities ;-)
absolutely lovely!!! I love F1 and greatly appreciate the work you guys and girls do in the factory, hang in there and keep working hard, it wont be long until we see a Sauber driver on the podium again!!!
Magnificent video! Almost hard to believe that this knowledge is public and free. I suppose that tells something about this technology: You really, really need to know what you're doing to do wind tunnel testing - if you don't, a 44 minute crash course by an expert, isn't even going to get you started.
+Joni-Pekka Luomala There's a reason why the video is called How Wind Tunnels Work rather than How To Work A Wind Tunnel 😉 Thank you very much for watching and commenting! 👍
Many thanks for this Sauber. As an Engineer myself, this is a very intersting insight into the technologies applied to a Formula 1 Car. Is there a way to apply as an Engineer in your team? :D
Hey Sauber F1 Team, this video series is amazing. I do have a request for a future topic. In car production, there is typically a team of engineers called Noise, Vibration, and Harshness engineers, whose job is to evaluate the sonic and mechanical characteristics of the car, for an aesthetic and also ergonomic purpose. I would guess that for F1, the aesthetics aren't really a consideration. That being said, does Sauber have a team of NVH specialists, and what (and how) do they contribute to the car? Do they focus on longevity/reliability, or do they bring driver aesthetics into consideration? Are they also responsible for acoustic systems like the radio and driver feedback tones? And lastly, do acoustic tests show up in other, possibly "unexpected" places (like the wind tunnel)? Thanks! -TTA
Thanks for the great feedback, TrackTimeAudio! You're right, noise (or acoustics) isn't a focus of our engineers work. We do care about vibrations, of course, and we do respective calculations/simulation as well as tests on our 7-poste rig. Regarding (driver) communication we use respective radio systems provided by Riedel Communications. The biggest issue there is the placement of the drivers' mic (usually in a pocket on the Nomex balaclava).
What a nice video. Thank you. Very informative. It also shows what FIA is doing to F1, not to mention what they do to the development of normal cars - in a negative way. The top teams should move out, and start their own series, so there's a motorsport series that is all about the pinnacle of performance and technology.
Looks like one of your competitors had watched your video... and downvoted it for lack of trade secrets ;-) In all seriousness, a fantastic look into the wind tunnel technology and implications of the design on performance. I suppose the limits imposed are there to reduce cost, in order to even out the playing field for the smaller, worse funded teams? Can you expand on the reasons why such restrictions are put in place by the FIA,, please?
Why isn't the wind tunnel rounded instead of turning vanes in the 90 degrees corners? Because of costs or 90 degrees corners are actually more effective, or because of better wind distribution in the tunnel?
atislav Willem says - To turn the air around the tunnel it is actually better (takes less energy) to use “90” degree corners but with turning vanes. The turning vanes make the air turn evenly because they are spaced quite close together. With a curved tube the air speed would not be so even across the working section. Lots of designs have been tried and tested by the aircraft and aerospace industries both before and after F1 teams started to develop wind tunnels for themselves. They have found the same thing. Excellent question.
Sauber F1 Team Excellent answer, thank you very much guys. I wish you the best for the rest of the 2014 season. I hope regulations will not change much for the next one, so you and other teams will be able to focus on improvements to become more competetive, because you 100% deserve it. (Accept my apologies for my English.)
3 megawatts! Damn! Wind tunnels are way more complicated than I thought. I kinda figured it was a tube and a fan, haha. I don't like the over-regulation, though. A limit on FLOPS? And a limit that's getting lower while computers are getting exponentially faster. You'll eventually be doing your CFD calculations with a smartphone.
What it supprise me the most is all the complexity of the flor(belt) and the transfert of 60% model to the 100% model ,i taught it was simple as just find the difference "lets say 500pd =100% and x=60% witch it'll be 500time60divided by 100 witch is 300pd and the vice versa so as the wind speed. (sorry for my words spelling ,i'm french from Montreal)
Great video! Better than 99% of today's Discovery channel broadcast. One question: how teams are controlled they keep all test regulations? Who would know if you put a 1:1 scale model in you own wind tunnel?
There is one thing I would like to ask though, - What about the effects of Tire Graining on the windflow? Does that play an important role or could it just be ignored? - Similarly, the Steel Belt is a very smooth one, but the ground isn't. Does that decrease the accuracy of measurements too?
The upper side of the steel belt is coated with a rather rough material, Shirish Potu. The wind tunnel tyres don't react like normal race tyres (wear, graining, etc.). If they did, they couldn't do the mileage described by Willem in the video. But, indeed, it may have negative effects on the track if a car picks up too much rubber in certain critical areas.
Shirish Potu Willem adds - the belt coating we use is synthetic and bonded to the steel belt. It does eventually wear out and become smooth under the tyres. We get tarmac roughness data from Pirelli and use this to help us characterise the roughness we target for the belt coating in the wind tunnel (for our 60% model). The tyres run on the model actually are a bit too smooth aerodynamically speaking but we have ways of experimenting with surface roughness and then apply a small correction to allow for it (really sorry but I am not willing to say exactly what we do!). Anyway another excellent question!
Fantastic Video. That technology used today is phenomenal! Even if i think that F1 Aerodynamics today have one Problem - because of all the tools and possibilities the Aerodynamic of a Formula 1 Car is too instabile. All These vortex that are created and the airflow split up into 1000 different airflows is making the cars aerodynamic too complicated and instabile. I think a step back towards the aerodynamic concept of Cars like the F2002 f.e. would make the Cars Aerodynamically as effective but more stabile than the Cars with 1000 different airflows, which are constructed today.
Hello, can someone help me with a calculation method by using mathematical equations to choose a fan of suitable capacity for the tunnel attached to the picture, the speed is 30 meters / second, the metal is steel
The answer depends on the design of the wind tunnel and losses in the corners etc. There is no simple equation that will calculate this for you. Sorry! With big horsepower one can get high speed airflow but you also need good flow distribution around the wind tunnel which also uses some power as well as good design to achieve. Industrial and wind tunnel fan supplier should be able to tell you what wind speed the fan can generate. That can give you a first order estimate.
Hello there! I am a high school student working on an aerodynamics project and we would like to make our own small wind tunnel. Can you give me any tips?
Alexandros T. We could probably give you a million tips :-) Our best option: Study this video in every detail. Maybe Brad McClaren could point you to his project of making a wind tunnel inside his PC. Not very scientific, but great fun for sure :-)
The Sauber tunnel cost 55m Euros including the building which houses about 100 people and has workshops and office space.... A low cost version suitable for motorsport would cost more that 20m. Lower quality ones are not worth building - they exist and are going partly unused.
It can, and at Sauber (for Alfa Romeo) we do try to get a match tarmac roughness - but every track is different. Some F1 teams run a smooth belt knowing that it is wrong but do that for improved force measurement repeatability. They then use computer science to predict what happens on track. For each track we get average tarmac roughness values on a macroscopic (stone sizes effectively) and microscopic (little sharp edges and holes) scale. It is measured for the tyre people but is useful for aero too..... :-) So one has to have tricks available to predict how airflow will change as the road gets rougher. One example - aero balance (how much downforce is on the front or rear) changes with road roughness. Why? Because air rushing under the front wing induces a bigger boundary layer if the road is rough.....
I do try to visit universities in my holidays and I do give lectures then. Probably 5 or so per year (take holiday to do it). Plan to do more university work in the next few years when I go part time with money earning work. :-)
@@willemtoet_yt I'm glad to hear that because students most definetely are benefitting from a great lecturer like you, who is also working actively in a very competitive job. Maybe you could add some of those lectures in an online platform like udemy or khan academy for the world to see? I sure would like to dive in from Turkey :)
@@Cankalay have a look on LinkedIn - or search for my name on UA-cam (don't use a channel yet). For LinkedIn start here - www.linkedin.com/pulse/formula-1-educational-videos-willem-toet/ and dig for one done in Hong Kong and one done at the University of Bolton. If you are on linkedin connect. I don't use youtube much but am doing some searches here today which is why I am connected....
Amazing! Lots of useful information I always was curious to know as an engineer. But the math part I think it would be easier if overview of the Buckingham Pi theorem was explained.
Fares AlKurdi Thank you very much for watching and for your feedback! We could have made this video 4h long going into every little detail, but we thought 44 minutes would already be hard to digest for most viewers ;-)
This was outstanding. I've really gained a lot of respect for Sauber. I could listen to that guy talk all day, he really knows what hes talking about there.
Thanks for watching and the positive feedback, Olivia Lambert
Yes I totally agree about listening to that guy. Maybe it’s the way he uses his hands that fascinates me so much….and he has a cute personality with that adorable tease…
*44 minutes of expert knowledge on how wind tunnels work!*
Sauber F1 Team Head of Aerodynamics, Willem Toet, explains EVERYTHING you might want to know about wind tunnels, wind tunnel testing and F1 wind tunnels in particular!
CONTENT and TIME CODES (click on the time code to jump directly to the respective chapter):
00:00 - *Basics of Wind Tunnel Design*
► basic principles, history
► open-circuit vs closed-circuit wind tunnels
► energy efficiency
► fan, foundation, seismic mass, vibrations
► air rotation and turbulence
04:58 - *Heat, Cooling & Airflow Optimisation*
► heat, cooling & radiators
► airflow optimisation
08:40 - *Test or Working Section*
► test section, settling chamber
► closed-jet, slotted-wall, 3/4 open-jet
► contoured-wall, adaptive-wall
► aerospace vs motorsport wind tunnel technology
► boundary layer reduction in motorsports
15:16 - *Model Motion System & Tyres*
► airospace vs motorsport model mounting systems
► model motion: yaw, pitch, roll
► wheels-on vs wheels-off, wheel steer
► wind tunnel model tyres vs. race tyres
20:51 - *Moving Ground Technologies*
► rolling road
► development: synthetic rubber vs steel belts
► development: suction control
► friction, cooling
► air bearings & vacuum pumps
27:15 - *Measurement Tools*
► load cells (6-/5-component)
► wheel load cells
► tyre patch load cells
► downforce, side-force, drag-force
► pressure sensors, motors, capillary tubes
32:04 - *The Myth of Smoke in the Tunnel*
► smoke wands, rakes, airflow visualisation
33:43 - *Model Size & Regulations*
► 50% vs 60% vs 100% model testing
► translation of model sizes and speeds
► FIA regulations and testing limitations
► wind-on restrictions
We hope you enjoy this video! If you do, don't forget to *give us your thumbs-up* and please *feel free to share* the video!
A big THANK YOU to Alex Humberstone for providing the *sound track* for this video! Listen to more of his tracks on soundcloud.com/alexhumberstone
#F1 #SauberF1Team #Formula1 #FormulaOne #motorsport #aerodynamics #windtunnel #F1explained
If it's EVERYTHING we wanted to know, can we go back over those areas that Williem didn't want to talk about?
:)
Brad McClaren
Hehehe... You mean those highly confidential bits? ;-)
Precisely.
I admire the effort you put in breaking down the chapters... Top job! ;)
Great vid!
One of the best, maybe the best video about wind tunnels ever made. I wish i could work there.
Extremely impressed with the clarity and the reasonable depth of this video presentation.
Jscottie2600 Thank you VERY much for the great feedback! It's not easy to find a good compromise between depth and detail of information and keeping it interesting and understandable for people without a degree in engineering :-)
Sauber F1 Team I hadn't seen the undivided version yet. I learned a lot about Wind tunnels I wasn't even aware that I didn't know.
Eric Muller
Not everyone makes it through the entire 44 minutes ;-) Thanks for watching!
Good luck at quali in 15 minutes
@Sauber F1 Team - *_never_* be afraid of getting _”too technical”_ with *F1* fans... we’re *_starved_* of technical info on the sport and while we may all not be engineers, many of us work in some technical field and *_love_* to learn stuff like this !!! This video is amazing and I hope to see more like it !!!
I probably enjoyed this more than the Cut Section Videos. Thank you so much Mr. Toet, the team behind this video and indeed everyone at Sauber who pushed for making this stuff open for the public. I've learnt more from this video than I ever have during all the surfing hours on F1 Aerodynamics. Thanks so much once again Sauber!
Wowed by the great feedback, Shirish Potu, thank you! Make sure to watch all of our TECH BITES videos, too (see TECH BITES playlists). Some gems in there, too!
Sauber F1 Team I've watched them all ;)
Great work Sauber. Keep the great videos coming! P1
Thanks a lot for sharing, Pole Position! And don't miss the related infographic! Download link in the video description ;-)
26:23 _”...testing at 80 meters per second...”_ that’s *178.9549 mph !!!* That is an *_astounding_* speed for the rolling road to move... seriously incredible engineering kit for it to move at that speed and remain a stable platform for testing !!
300 kph damn.... i guess that's what it takes to make these f1 cars what they are
Hands down the best informational video on wind tunnel use for automotive testing.
+Alexander Del Palacio Thank you! We second that 😉
Thank you for sharing this insight on wind tunnel in F1. It is very rare to have the opportunity to get to knowing technical features in F1. It were 43 minutes of pure delight and knowledge improvement. Thanks
Thanks a lot for watching and commenting, Pedro Pereira!
I could listen to him for days. Love to learn
Chapeau👏🏽 incredible video
This is one of my favourite things about youtube. Sometimes you find absolute nuggets of gold on this website, and this video is one of them.
Thanks a lot, hangm4n
I love that this video gives legitimate insight into real life engineering. Thanks, from a Mechanical Engineering student.
Thank you for watching and commenting!
As a gear head and a civil engineering student, I agree. I learned a lot in terms of real world applications
Very funny to say, my pfp is a 17-year-old mechanical engineering student
Amazing video, I never thought about how complex wind tunnels are, but considering how weird fluids are, it makes total sense.
Such an informative video. Thanks sauber
This is an incredible video! I'm personally in mech eng school however I really find aerodynamics much more interesting. Wind tunnels are an incredibly interesting piece of technology and knowing more about them is very enticing
Extremly awesome video! Not only the man has (obviously) great knowledge of the topic but he also have very good talking skills, makes it really enjoable to listen. Thank you very, very much :)
This is such an underrated video. Wow.. such amazing
Great video. I wish all aspects of F1 had a video of this detail. Well done.
Thanks a lot, Jake! You should also check out our Tech Bites playlist 😉
I'm impressed. Thank you Sauber for sharing this knowledge in such a nice and interesting way. I really enjoyed it. Good luck for next season.
Glad you enjoyed it. Thx for watching!
Thanks sauber i just recently became really interested in f1 i think your my favorite team so far you guys have alot of important history
Thank you Sauber for sharing this valuable information!! Amazing video and very well explained.
Wow. I was searching for wind tunnels purposes and how it functions and this popped out. Clearly didn’t disappoint me!
As an engineering student listening to lectures about wind tunnels, this is exactly what I needed! Love it guys!
Thanks for sharing this information. It makes me appreciate the cars more knowing the kind of work it takes to make them faster.
marvelous video and easy understanding
+kishore k Thank you very much! Appreciated 😊👍
Amazing content!! Not usual for a f1 team most teams make videos for not so smart people. Keep going on like this!
This is impressive stuff. Very helpful for aero engineers.
This was excellent, thanks for sharing.
I previously watched the 8 Part series but it is brilliant to see it altogether. This should also be a FIA rule that these type of documentaries are produced, secrets can still be kept however information can still be produced in a documentary like these.
I know Willem was born in the Netherlands but since he grew up in Australia we will claim him ;).
Awesome insight into the wind tunnel!
Marc Andre Cote Thank you very much! Glad you liked it. Which part did you find most interesting?
Sauber F1 Team As a motorsport student at Cranfield, I found the technical details very interesting. Moving walls, the moving floor and air bearings, etc.
keep up the good work !
Marc
I love this lession. Pure knowledge
Awesome!! Thank you for taking the time to explain all this!
Alex X You're welcome 😊 Thanks for watching!
Thank you I loved it!
Great explained and detailed. Best spent 44min this week :)
Andreas Myrberg Ha! So you watched it till the end :-) Thank you! Glad you liked it.
Sauber F1 Team
Of course. I was just sad it ended :)
One for the cars suspension and in detail on how all works and evolved....Then I would become a life long fan! :)
Excellent presentation!
László Csige Thank you very much!
I like it. Willem I could listen to you hours and hours. It is so interesting....
Thanks Sauber!
I shall be using this information in my assignment, of course you guys get credit for the information.
Thank you Sauber, I love this men (Willem Toet) I like how he explains things. He reminds me of a teacher in high school that worked for Renault.
Thanks a lot for the nice comment, +Niv Neirda
Sauber F1 Team Do you know where can I contact Willem Toet ?
You may send an email to social-media@sauber-motorsport.com and we'll ba happy to forward it to him.
Incredibly fascinating video, I'm totally blown away!
Happy to hear that, Zkoon 😊👍
+strung0ut01 ;-)
Cheeky 🙄
Fantastic ! Thank you, your videos are very instructive and I'm learning english from it. :)
Perfect! Thanks for watching and for the positive feedback!
I got a bit confused, before the radiator you stop the swirl or is after the air passess trough the radiaor that it is not longer sppining at macroscopic scale?
Swill is stopped immediately after the fan. The radiator then further reduces any that remains.
I just found these. Extraordinary. Thank you so much for sharing this amount of insight!
It took you a while ;-) Also check out our Tech Bites playlist!
Sauber F1 Team Wow, I didn't really expect a response this quickly. Thanks.
On the subject of who built the first wind tunnel, NASA seems to think that the Wright Brothers had one in 1901 (wright.nasa.gov/airplane/tunnel.html) which would have been before Eiffels 1905/1906 efforts, and wikipedia (I know, I know ...) says Wenham built one in 1871.
Great stuff, thanks for the info! The important thing is that someone had the idea and whoever did would definitely be majorly impressed by today's facilities ;-)
A very informative video.....was greatly impressed by the knowledge of the man and the way he explained the working of the Wind Tunnel.
Awsome presentation, Thanks.
Thanks for watching! And for the great feedback :-)
thanks for the awesome insight guys, awesome video
And thank YOU for the great feedback!
absolutely lovely!!! I love F1 and greatly appreciate the work you guys and girls do in the factory, hang in there and keep working hard, it wont be long until we see a Sauber driver on the podium again!!!
Thank you for delivering this valuable scientific knowledge to us!!
Wonderful! Great effort. Would love to know more about F1 technologies, makes F1 more exciting. All the best sauber ;)
Thanks, Farhan! Check out our Tech Bites playlist for more insights!
Thanks Sauber now know much more about windtunnels😊
Excellent Video. Complex Tech explained in layman terms. Thanks for the upload
Great video
The mental image of Sauber engineers floating around on surface tables inside the tunnel during their lunch breaks is priceless :-)))))
Magnificent video! Almost hard to believe that this knowledge is public and free. I suppose that tells something about this technology: You really, really need to know what you're doing to do wind tunnel testing - if you don't, a 44 minute crash course by an expert, isn't even going to get you started.
+Joni-Pekka Luomala There's a reason why the video is called How Wind Tunnels Work rather than How To Work A Wind Tunnel 😉 Thank you very much for watching and commenting! 👍
Many thanks for this Sauber. As an Engineer myself, this is a very intersting insight into the technologies applied to a Formula 1 Car. Is there a way to apply as an Engineer in your team? :D
***** Thanks for watching! No vacancies at the moment, but you may regularly check www.sauberf1team.com/en/corporate/jobs/ for job offers.
My pfp is an engineer HAAHAHA thats why I am here
Fantastic video
Thanks, *****! Don't miss the infographic! Link in the video description.
I really loved this docu
Excellent video, thank you.
Thanks, babo1990!
Hey Sauber F1 Team, this video series is amazing. I do have a request for a future topic. In car production, there is typically a team of engineers called Noise, Vibration, and Harshness engineers, whose job is to evaluate the sonic and mechanical characteristics of the car, for an aesthetic and also ergonomic purpose. I would guess that for F1, the aesthetics aren't really a consideration. That being said, does Sauber have a team of NVH specialists, and what (and how) do they contribute to the car? Do they focus on longevity/reliability, or do they bring driver aesthetics into consideration? Are they also responsible for acoustic systems like the radio and driver feedback tones? And lastly, do acoustic tests show up in other, possibly "unexpected" places (like the wind tunnel)? Thanks! -TTA
Thanks for the great feedback, TrackTimeAudio! You're right, noise (or acoustics) isn't a focus of our engineers work. We do care about vibrations, of course, and we do respective calculations/simulation as well as tests on our 7-poste rig. Regarding (driver) communication we use respective radio systems provided by Riedel Communications. The biggest issue there is the placement of the drivers' mic (usually in a pocket on the Nomex balaclava).
It is absolutely criminal that Mr Toet is not presently working in F1.
What a nice video. Thank you. Very informative.
It also shows what FIA is doing to F1, not to mention what they do to the development of normal cars - in a negative way.
The top teams should move out, and start their own series, so there's a motorsport series that is all about the pinnacle of performance and technology.
19:47 I thought they used a real car until this scene lol
Thanks for this! Really interesting as a person studying fluid mechanics!
Awsome
Looks like one of your competitors had watched your video... and downvoted it for lack of trade secrets ;-)
In all seriousness, a fantastic look into the wind tunnel technology and implications of the design on performance. I suppose the limits imposed are there to reduce cost, in order to even out the playing field for the smaller, worse funded teams? Can you expand on the reasons why such restrictions are put in place by the FIA,, please?
tytvan Thanks a lot for watching and commenting! Correct, the restrictions are meant to reduce costs and to level the playing field.
really helpful for my fluid dynamics class, thanks
Fantastic video, but 4:49 - he says Brownian motion, not boundary motion. Fix the subs if you get the chance
what an amazing video
Willem just touched upon it in his great explanation but I was wondering how corning is achieved in the tunnel. Thanks again fro the great videos.
That was great. Cheers.
Why isn't the wind tunnel rounded instead of turning vanes in the 90 degrees corners? Because of costs or 90 degrees corners are actually more effective, or because of better wind distribution in the tunnel?
atislav Willem says - To turn the air around the tunnel it is actually better (takes less energy) to use “90” degree corners but with turning vanes. The turning vanes make the air turn evenly because they are spaced quite close together. With a curved tube the air speed would not be so even across the working section. Lots of designs have been tried and tested by the aircraft and aerospace industries both before and after F1 teams started to develop wind tunnels for themselves. They have found the same thing. Excellent question.
Sauber F1 Team Excellent answer, thank you very much guys. I wish you the best for the rest of the 2014 season. I hope regulations will not change much for the next one, so you and other teams will be able to focus on improvements to become more competetive, because you 100% deserve it. (Accept my apologies for my English.)
A great video. A lot of insight. Thank you. :D
The whole time he's explaining the air bearings I'm just thinking about air hockey tables
More vids like this might save the sport I think I have watched it 10 times now
3 megawatts! Damn! Wind tunnels are way more complicated than I thought. I kinda figured it was a tube and a fan, haha. I don't like the over-regulation, though. A limit on FLOPS? And a limit that's getting lower while computers are getting exponentially faster. You'll eventually be doing your CFD calculations with a smartphone.
My nerdy side has come out. Thank you sauber for very understandable video
david gunn Trying hard to find a compromise between delivering in-depth insights and keeping it understandable for everyone. Thanks for watching!
I LOVE THIS
Glad you like it, Pat Frilles!
25:30 sounds like an air hockey table lol
What it supprise me the most is all the complexity of the flor(belt) and the transfert of 60% model to the 100% model ,i taught it was simple as just find the difference "lets say 500pd =100% and x=60% witch it'll be 500time60divided by 100 witch is 300pd and the vice versa so as the wind speed. (sorry for my words spelling ,i'm french from Montreal)
So much knowledge
love it!
+PBS Mahapatra Thank you very much! 👍
+Sauber F1 Team Just letting you know that the infographic links are broken.
Great video! Better than 99% of today's Discovery channel broadcast. One question: how teams are controlled they keep all test regulations? Who would know if you put a 1:1 scale model in you own wind tunnel?
CCTV and detailed reporting to the FIA.
There is one thing I would like to ask though,
- What about the effects of Tire Graining on the windflow? Does that play an important role or could it just be ignored?
- Similarly, the Steel Belt is a very smooth one, but the ground isn't. Does that decrease the accuracy of measurements too?
The upper side of the steel belt is coated with a rather rough material, Shirish Potu. The wind tunnel tyres don't react like normal race tyres (wear, graining, etc.). If they did, they couldn't do the mileage described by Willem in the video. But, indeed, it may have negative effects on the track if a car picks up too much rubber in certain critical areas.
Shirish Potu Willem adds - the belt coating we use is synthetic and bonded to the steel belt. It does eventually wear out and become smooth under the tyres. We get tarmac roughness data from Pirelli and use this to help us characterise the roughness we target for the belt coating in the wind tunnel (for our 60% model). The tyres run on the model actually are a bit too smooth aerodynamically speaking but we have ways of experimenting with surface roughness and then apply a small correction to allow for it (really sorry but I am not willing to say exactly what we do!). Anyway another excellent question!
Fantastic Video. That technology used today is phenomenal! Even if i think that F1 Aerodynamics today have one Problem - because of all the tools and possibilities the Aerodynamic of a Formula 1 Car is too instabile. All These vortex that are created and the airflow split up into 1000 different airflows is making the cars aerodynamic too complicated and instabile. I think a step back towards the aerodynamic concept of Cars like the F2002 f.e. would make the Cars Aerodynamically as effective but more stabile than the Cars with 1000 different airflows, which are constructed today.
Hello, can someone help me with a calculation method by using mathematical equations to choose a fan of suitable capacity for the tunnel attached to the picture, the speed is 30 meters / second, the metal is steel
The answer depends on the design of the wind tunnel and losses in the corners etc. There is no simple equation that will calculate this for you. Sorry! With big horsepower one can get high speed airflow but you also need good flow distribution around the wind tunnel which also uses some power as well as good design to achieve. Industrial and wind tunnel fan supplier should be able to tell you what wind speed the fan can generate. That can give you a first order estimate.
Do you utilize the wind tunnel for vehicles/objects outside of F1?
Is there a updated link or is it not possible to get the infographic?
Fantastic piece! Hope you have a great season in 2015
Thanks a lot, glad you enjoyed it!
Formula One needs guys like you more than ever.
I don't think I'll ever finish studying for my exams with your videos. xD
Study! Now! All the best for your exams, Mac.
Sauber F1 Team Thanks! :-)
Now arrange a mirror system so you can sweep synchronize the laser beam with the air
Hello there! I am a high school student working on an aerodynamics project and we would like to make our own small wind tunnel. Can you give me any tips?
Alexandros T. We could probably give you a million tips :-) Our best option: Study this video in every detail. Maybe Brad McClaren could point you to his project of making a wind tunnel inside his PC. Not very scientific, but great fun for sure :-)
My advice is to figure out where and how you'll record measurements first. Everything else will fall into place.
And skip smoke. There are better, easier ways to see flow without probes or heated wires.
This man is a $%&^ genius. Listening to him speak and the amazing amount of knowledge he clearly and comprehensively explains, is mind-blowing.
Anyone gaining this ultimate knowledge in 2020 !?
You're a genius.
how much to build one in my back yard
The Sauber tunnel cost 55m Euros including the building which houses about 100 people and has workshops and office space.... A low cost version suitable for motorsport would cost more that 20m. Lower quality ones are not worth building - they exist and are going partly unused.
Thank you, Sauber.
The belt does not replicate the tarmac's texture. Why is that?
It can, and at Sauber (for Alfa Romeo) we do try to get a match tarmac roughness - but every track is different. Some F1 teams run a smooth belt knowing that it is wrong but do that for improved force measurement repeatability. They then use computer science to predict what happens on track. For each track we get average tarmac roughness values on a macroscopic (stone sizes effectively) and microscopic (little sharp edges and holes) scale. It is measured for the tyre people but is useful for aero too..... :-) So one has to have tricks available to predict how airflow will change as the road gets rougher. One example - aero balance (how much downforce is on the front or rear) changes with road roughness. Why? Because air rushing under the front wing induces a bigger boundary layer if the road is rough.....
This man needs to visit universities and give lectures! Makes me regret not stuying engineering :(
I do try to visit universities in my holidays and I do give lectures then. Probably 5 or so per year (take holiday to do it). Plan to do more university work in the next few years when I go part time with money earning work. :-)
@@willemtoet_yt I'm glad to hear that because students most definetely are benefitting from a great lecturer like you, who is also working actively in a very competitive job. Maybe you could add some of those lectures in an online platform like udemy or khan academy for the world to see? I sure would like to dive in from Turkey :)
@@Cankalay have a look on LinkedIn - or search for my name on UA-cam (don't use a channel yet). For LinkedIn start here - www.linkedin.com/pulse/formula-1-educational-videos-willem-toet/ and dig for one done in Hong Kong and one done at the University of Bolton. If you are on linkedin connect. I don't use youtube much but am doing some searches here today which is why I am connected....
@@willemtoet_yt Thank you Willem! Can't think of a better way to spend my time.
Amazing! Lots of useful information I always was curious to know as an engineer. But the math part I think it would be easier if overview of the Buckingham Pi theorem was explained.
Fares AlKurdi Thank you very much for watching and for your feedback! We could have made this video 4h long going into every little detail, but we thought 44 minutes would already be hard to digest for most viewers ;-)
Are you hiring your windtunnel to other teams or companies? I heard yours is the best in F1
Top secret, Daniel ;-) But we do quite a bit of what we call third-party business in various areas.
Please, reupload the infographic. Thank you.
Regarding the model size, it's surprising that raw material cost is even part of the equation.