homemade wind tunnel

[ConnClark]

Wind Tunnel Testing Now Available To The Common Man

[gone-ot]

Round cross-section is FAR better than square cross-section, but something is better than nothing (ha,ha)!

[Cobb]

Interesting..... The mythbusters always used a wall of straws to diffuse the air from the fan to the item to be tested.

[freebeard]

The comments section is pretty good, and they get why the fan should be in the back.

Julian Edgar at Autospeed could show why it needs 180° bell-mouths on the inlet.

Compare to Yoshi Suzuka
http://http://www.youtube.com/user/yshsuzuka/videos?flow=grid&view=0

His newest video 'Electramotive wind tunnel' was disappointing. I thought it would be about using ganged Dyson bladeless fans to eliminate turbulence. But it would take a lot of them @ 40 cubic feet per minute.