Wind Tunnel Moving Airfoil Test2

Another flow visualization test while changing the angle of attack on a semi-symmetrical airfoil. Please see http://tomcarlone.com/WindTunnelProject.html for more details on the project.

Category:

Science & Technology

Tags:

• low
• speed
• wind
• tunnel
• testing
• flow
• visualization
• smoke
• moving
• airfoil
• stalled
• wing

[beymastang]

what did you used to make the smoke or fog ?

[tomcarlone]

@beymastang We filled a 2L soda bottle with warm water, dropped in some dry ice, and then screwed the cap back on. We modified the cap so that it fed directly to a narrow hose which was used as the wand to direct the 'smoke'

[tomcarlone]

I would image you would get the same or similar result with any fluid medium. Our tunnel was made to only work with air so we did not test other fluids

[DRaG0NREdZ]

Awesome video (and simulation)! Have you ever tried doing the same experience with a model aircraft?

[tomcarlone]

@DRaG0NREdZ Thanks, the airfoil shown in this video is from a foam model airplane wing. We are in the process of making more videos with some other models. Is there something in particular that you would like to see?

[andyskateboarder]

how u created the wing?

[tomcarlone]

I believe it was made of foam by hot-wire cutting it over a pre-made profile

[josh2593]

can you make a video to show the set up of your wind tunnel plz????

[nebg9]

@Desmonddd2002 The wind tunnel in this video had a contraction cone that went from a 25" diam intake to a 14" square test section. The speed in the video is about 5mph. This wind tunnel got up to about 30mph but at the higher speeds, the smoke dispersed too much to see. Good luck!

[Desmonddd2002]

what is the wind speed in ur tunnel, and what shape would u recommend the wind tunnel to be in? Also what is the dimension of ur wind tunnel. Thanks a lot because i have recently built mine and it didn't work that well :(

[slayyer2003]

@tomcarlone THIS IS GREAT IT SHOWS WHEN THE WING STALLS

[phatstakz78]

aim the damn smoke directhly at the leading edge of the airfouil....when doing this you can finally demonstrated the flow of air during bernoullies principle....lol...

[dewaone]

Um, This was awesome, thank you!

[beymastang]

what did you used to make the smoke or fog

[nebg9]

@fundipiz the smoke is just introduced through a small tube right in front of the settling chamber. the smoke is sublimated dry ice.

and the wing is hotwire cut out of foam insulation.

[fundipiz]

@tomcarlone

i am doing the same kind of project but i need to know how u got the smoke to go in a straight line

please help!!!!!!!!!!!!!!!!!!!!! and could u tell me how to make the aircraft wing, air foil. also what produce the smoke