Date: Mon Oct 19 16:17:48 2009

Author: Dale E. Stille

Subject: Re: bladeless fan

Post:

Anthony,

I'll jump in here instead of Dick Berg and say it looks like
"entrainment" to me and has little to do with Bernoulli. While the ring
may have a side shaped like an airfoil, I can't see that it does much
except cut down on some turbulence at the edge of the air stream.
Do I have that pretty much right Dick??

Dale Stille
U of Iowa

Anthony Lapinski wrote:
> A student sent me these links about a bladeless fan that works via
> Bernoulli's principle. Interesting!
>
> http://dvice.com/archives/2009/10/dyson-attacks-y.php
>
> http://www.dyson.com/fans/default.asp
>


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