Wind tunnel - Part 1 - Aerodynamics

I made a wind tunnel! This is a closed loop wind tunnel (subsonic)
Watch part 2 for the experiments: • Wind Tunnel Experiment...
What I mean by energy loss is energy transformed into another energy type which we can't use or isn't useful to us.
These energy types are generally Heat, Sound or Light
The faster we go, the more we lose energy. And with energy becoming crucial in our world, we need to save it. A big energy loss with high speeds is friction. In air, we have wind. That's why I wanted to see how the wind affected different objects and therefore study aerodynamics. That's why I made a wind tunnel
Thanks to Albert for his advice : • Video
More about load cells : • Electronic Basics #33:...

[@tariksbl]

Thanks for sharing setbacks as well as successes! Many instructional videos make it seem like projects always go as planned from the start.

[@healinglife123]

Thanks for the video! Would U mind letting me know the type of fan U used for the driving section of the wind tunnel? It appears pretty strong regarding its size :)

[@kf4293]

The straw idea really wasn't bad. But the length may have played into poor flow. Also, a circular design would help, particularly on the fan end. Drone pilots have been able to get as much as a 90% increase in thrust with a carefully shaped and very tightly ducted propeller.

[@tasneemzoghol1729]

This is great! What kind of sensor was used? Can you help me with how to measure the lift and drag . How do you measure the drag difference . can u describe in detail how to do it including the materials you used. It would be a great help I'm trying to finish a high-school project

[@cptcrazyfingers9639]

Very well done. One thing to keep in mind is that the way you have the load cell and ball mounted, you won’t be measuring only the drag force. If you put pressure on the top or bottom of the ball, the arm it’s attached to will apply a torque to the load cell. That means you will also be measuring lift forces, and of course the weight of the ball. Because a ball is symmetric this shouldn’t be an issue as long as the flow is perfectly laminar and uniform (which doesn’t even happen in professional wind tunnels). The first sensor you tried would give you a more precise measure of drag but the load cell is overall a more effective force measuring device. I would love to see part 2.
Lastly, the load cell uses something called a strain gage to measure the change in length of the load cell at very very small increments. This in effect changes the length of the tiny wire inside the strain gage and changes its resistance. Using material properties and math, this is translated as a force proportional to the strain in the aluminum structure of the load cell.

[@electronology4665]

I see what you mean with the torque and it does indeed need to be taken into account if I would put long narrow objects (vertically). I'll think about how to counteract torque; maybe using different a different sensor or putting the sensor in a different place (maybe under the test chamber)?

[@chanakyasinha8046]

Glad i found this video ,the basic concept remains the same of making laminar air flow ,i just want to ask ,whether there was any sound difference before the straw stacking and after the straws in place for laminar flow ...as i am looking for reducing sound of my kitchen chimney which is very noisy ,and i though it must me turbulence created around sharp edges is making noise so ,will maki the entry and exit of the chimney laminar ,thus reducing the noise ...pls suggest

[@ahmadal-salman5347]

Do you do some calculations for fan blades and wind tunnal duct

[@anandaakash6481]

Could you give the specifications of motor,force coil and others

[@electronology4665]

I must clarify!
What I meant by losing energy is energy transformed into another type of energy which we can't use or isn't useful to us.
"Nothing is lost, nothing is created, everything is transformed." of course

[@PakornThaipituk]

Could you tell me what brussless motor ( kv, voltage and amp) do you use for fan?

[@venizas8779]

Hey, may i know what motor are u using for the fan?

[@thebestpaintballer]

Link to the music?

[@paulhueber6718]

Whaooo !! When is part 2 coming out

[@electronology4665]

Wow soon soon !

[@inoeducation5721]

Where is the 2nd part? 😧

[@pureambience]

Still waiting?

[@JPSRL]

the language on the cardbard 0:50 is Korean

[@vlatkopopovski2685]

The authors have two wrong scientific approaches: researching the creation of Lift force and Low pressure at upper side of the wing, relative to the ground surface and Earth. I explain the aerodynamic cavitation and existence of Lee side aerocavern, and creation of Aerodynamic force.

[@JPSRL]

oh the material are all Korean

[@electronology4665]

Most of it was

[@user-sh8pv4gl8m]

한국인인가요??
사과박스 글씨가 한글이던데 ㅋㅋㅋ

[@electronology4665]

나는 한국인이 아니지만 나는 한국에 살고있다

[@billshiff2060]

I don't think he straws are not necessary in an open design like that. Your model is too big for the tunnel, will give false readings.