Quote:
Originally Posted by trikkonceptz
I know alot of you are DIY'ers, has anyone thought of retro fitting a spray booth as a wind tunnel? Or is it to small?
That would seem logical, plus you get the added benefit of being able to paint in it, if you maintain it properly.
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A spray booth would make a great test section.They are smooth-walled and have recessed lighting.Frontal area of model would be limited to 5% of test-section area,so size of booth would determine maximum size of model.Remember,without a turbulent boundary layer your results would be garbage.In full-scale you need at least a 20-mph air velocity for proper Reynold's Number.At 50% you'd need 40 mph.25% -80-mph,and so on.Pope has a great book on" low-speed wind tunnel design."It's worth checking out.The re-circulating design is cheapest to operate,although if using smoke you've got to design for that.