Perfectly clear, easy to follow and easy to understand. Wouter makes us all feel like we just got an intellect boost - a phenomenon known as "The Wouter Contraction".
Nice done!! A small piece of advice: Adding the context about the function of approach each specific parameter of each component such as the ratio of the diffuser radius and experiment chamber radius or the length of the honeycomb will be made this video stand out from others that takes about the same topic.
Hi Justin, indeed, more specific design values would definitely be good for those designing their own tunnel. In this video, we decided to keep things a bit light, without diving too much into the details :) The next one will be on size, speed and cost of the tunnels, and the one after that on measurement techniques - I hope you'll like those.
I have high interest in aeronautics and have started reading the book on Flight and dynamics. Now got to know why wind tunnel was needed and it is made up of for testing the structures. 🙂🙂
1:13 Why you donty use toroidal shape instead of square ? in corner produce turbulence. or Elipse form if need more large test stand. i dont like the close loop because cant include smoke. I see sameone use helium buble but that add cost to the previous one. And i am not profesion where i need run it 24/7.
There are indeed examples of tunnels that have longitudinal slots along the test section to let some of the air out, although this is also partially aimed at reducing the blockage / wall effects. And some tunnels have large cooling installations to control the temperature (some even go to very low temperatures to improve the similarity between the real and test condition - see our interview video with AIRBUS: airshaper.com/videos/airbus-talks-aircraft-design-tools/G60rTDR6CPw)
Great intro to wind tunnels. I had a Q's based on some of the wind tunnel videos I watched online. What type of smoke is used for flow observation in the tunnel? Also in F1, how do they control the smoke. I mean where the smoke (stream of air) should be incident on the car?
Hi Risheek, I actually wouldn't know what type of smoke they use. Perhaps it could be interesting to contact one of the wind tunnel institutes to ask them?
Thank you for the video,more detailed than I've seen until now. A question popped into my head,if I am not mistaking in the real word the air has some turbulances,but here the air form what I understood it's quite directed. Does this "forced" direction of the air help in the real world situation?
In the real world, it's often the object moving through the air instead of the other way around. So there you'd need to compare the turbulence present in the surrounding "standstill" air to the turbulence generated by forcing the air to move. In some cases, the ambient air can be very turbulent (city traffic, thunderstorms), in other cases it can be very stable.
Hi Kyle, the velocity just before the test section depends on the contraction geometry, and not too much on whether the air is recirculated or fresh from the environment. But for the open tunnel, you can have a different turbulence intensity for example, if that is what you mean?
@@AirShaper Okay makes sense thankyou, it's just because I've been assigned a task to compare open and closed return wind tunnels which i have done but then it says, use the values found in task 6 (it was an example of a convergent-divergent part of an open return wind tunnel) and compare them to what values might be found within a closed return wind tunnel if that makes sense?
@@kylehenderson7344 Hi Kyle, it's a challenge to know what is meant without the context of the assignment and I wouldn't be able to dig in. But perhaps you can take the discussion we had here back to the professor and ask what he/she thinks/means?
I am thinking all my life about how to build the fastest possible track car and i just cant find good content about that. I guess the most "simple" way is to take the current worlds fastest car (2020 F1 Mercedes i guess) and remove regulations kind of like the 919 evo. So we would improve fuel flow, minimum weight, power etc. and probably give it all those banned stuff such as active suspension and all those clever traction controls with torque vectoring etc. but what about aero? would real sideskirts still work better than vortex seals for the unberbody? would covering the front wheels definetly improve performance? is a fan combined with skirts, active wings and flaps the ultimate way to insane downforce levels? well i understand that nobody is building such a crazy car but why are there no concepts for this? i would imagine all those clever engineers are dreaming about a no regulations f1 car secretly and i would absolutely love seeing this thing take on the nordschleife even if we need g-suits for the driver.
Hi Quarkhammer, yes, you would definitely be able to gain loads of aerodynamic performance. - Side skirts: these can really help to generate a lot of ground effect, as they prevent surrounding air from leaking in. - Shielding the wheels: although open wheels can generate downforce, they generate a lot of drag too. Shielding them can help to clean up the flow which may allow for more performing aero elements on other locations of the car. - ... Check our video on the Gordon Murray T50, where we discuss some of those issues! th-cam.com/video/FSaI6STYIQA/w-d-xo.html Also interesting is the RedBull X2010 Playstation concept - you'll see much of those ideas included there as well (and that one also was a no-limits approach :) )
@@AirShaper thanks for the answer! the X2010 really seems to be the closest prototype. sadly i couldnt find in depth info about it. i bet the community would love a detailed aero analysis video from that thing ;) and what do you think has changed in these 10 years aerowise? are there any new inventions in that sector that would make the x2010 faster? maybe plasma actuators some day?
@@th1nk_outside Indeed, I think the "manipulation" of the boundary layer using plasma, magnetic fields, ... could be the next big thing. Just imagine what would be possible if you can post-pone/tune the separation point to your needs!
Perfectly clear, easy to follow and easy to understand. Wouter makes us all feel like we just got an intellect boost - a phenomenon known as "The Wouter Contraction".
Although such a nickname opens the door to plenty of pranks & jokes, I do appreciate the compliment :):) Glad you liked the video!
Nice done!! A small piece of advice: Adding the context about the function of approach each specific parameter of each component such as the ratio of the diffuser radius and experiment chamber radius or the length of the honeycomb will be made this video stand out from others that takes about the same topic.
Hi Justin,
indeed, more specific design values would definitely be good for those designing their own tunnel.
In this video, we decided to keep things a bit light, without diving too much into the details :)
The next one will be on size, speed and cost of the tunnels, and the one after that on measurement techniques - I hope you'll like those.
Got a good feel about Wind Tunnel.
Keep it up.
Good explanation of wind tunnel working which is very helpful for me.thank you sir.👍
Thank you Santosh!
Thanks once again Wouter. Great series to follow. Awesome explanation of the wind tunnel basics
Thanks a lot!!
I have high interest in aeronautics and have started reading the book on Flight and dynamics. Now got to know why wind tunnel was needed and it is made up of for testing the structures. 🙂🙂
I'm glad the video was useful!!
1:13 Why you donty use toroidal shape instead of square ? in corner produce turbulence.
or Elipse form if need more large test stand.
i dont like the close loop because cant include smoke. I see sameone use helium buble but that add cost to the previous one. And i am not profesion where i need run it 24/7.
bro, pls create a playlisy on this topic. It will be more helpful.
Done! th-cam.com/video/L1AYo9Mk1EI/w-d-xo.html
Pt.2 how do you reduce the heat and could you allow some air to escape along the circulation
There are indeed examples of tunnels that have longitudinal slots along the test section to let some of the air out, although this is also partially aimed at reducing the blockage / wall effects. And some tunnels have large cooling installations to control the temperature (some even go to very low temperatures to improve the similarity between the real and test condition - see our interview video with AIRBUS: airshaper.com/videos/airbus-talks-aircraft-design-tools/G60rTDR6CPw)
Great intro to wind tunnels. I had a Q's based on some of the wind tunnel videos I watched online.
What type of smoke is used for flow observation in the tunnel?
Also in F1, how do they control the smoke. I mean where the smoke (stream of air) should be incident on the car?
Hi Risheek,
I actually wouldn't know what type of smoke they use.
Perhaps it could be interesting to contact one of the wind tunnel institutes to ask them?
@@AirShaper
Okay thanks
Thank you for the video,more detailed than I've seen until now. A question popped into my head,if I am not mistaking in the real word the air has some turbulances,but here the air form what I understood it's quite directed. Does this "forced" direction of the air help in the real world situation?
In the real world, it's often the object moving through the air instead of the other way around. So there you'd need to compare the turbulence present in the surrounding "standstill" air to the turbulence generated by forcing the air to move. In some cases, the ambient air can be very turbulent (city traffic, thunderstorms), in other cases it can be very stable.
Would the upstream velocity be lower in the closed circuit tunnel compared to open circuit (meaning just before the test section)
Hi Kyle, the velocity just before the test section depends on the contraction geometry, and not too much on whether the air is recirculated or fresh from the environment. But for the open tunnel, you can have a different turbulence intensity for example, if that is what you mean?
@@AirShaper Okay makes sense thankyou, it's just because I've been assigned a task to compare open and closed return wind tunnels which i have done but then it says, use the values found in task 6 (it was an example of a convergent-divergent part of an open return wind tunnel) and compare them to what values might be found within a closed return wind tunnel if that makes sense?
@@kylehenderson7344 Hi Kyle, it's a challenge to know what is meant without the context of the assignment and I wouldn't be able to dig in. But perhaps you can take the discussion we had here back to the professor and ask what he/she thinks/means?
How to make matrics of deta
I am thinking all my life about how to build the fastest possible track car and i just cant find good content about that.
I guess the most "simple" way is to take the current worlds fastest car (2020 F1 Mercedes i guess) and remove regulations kind of like the 919 evo. So we would improve fuel flow, minimum weight, power etc. and probably give it all those banned stuff such as active suspension and all those clever traction controls with torque vectoring etc.
but what about aero?
would real sideskirts still work better than vortex seals for the unberbody?
would covering the front wheels definetly improve performance?
is a fan combined with skirts, active wings and flaps the ultimate way to insane downforce levels?
well i understand that nobody is building such a crazy car but why are there no concepts for this? i would imagine all those clever engineers are dreaming about a no regulations f1 car secretly and i would absolutely love seeing this thing take on the nordschleife even if we need g-suits for the driver.
Hi Quarkhammer,
yes, you would definitely be able to gain loads of aerodynamic performance.
- Side skirts: these can really help to generate a lot of ground effect, as they prevent surrounding air from leaking in.
- Shielding the wheels: although open wheels can generate downforce, they generate a lot of drag too. Shielding them can help to clean up the flow which may allow for more performing aero elements on other locations of the car.
- ...
Check our video on the Gordon Murray T50, where we discuss some of those issues!
th-cam.com/video/FSaI6STYIQA/w-d-xo.html
Also interesting is the RedBull X2010 Playstation concept - you'll see much of those ideas included there as well (and that one also was a no-limits approach :) )
@@AirShaper thanks for the answer! the X2010 really seems to be the closest prototype. sadly i couldnt find in depth info about it. i bet the community would love a detailed aero analysis video from that thing ;)
and what do you think has changed in these 10 years aerowise? are there any new inventions in that sector that would make the x2010 faster? maybe plasma actuators some day?
@@th1nk_outside Indeed, I think the "manipulation" of the boundary layer using plasma, magnetic fields, ... could be the next big thing. Just imagine what would be possible if you can post-pone/tune the separation point to your needs!
Don't know anything about this, but
but??????