[Stoves] attempt at swirling secondary air
David Young
dyoung at pobox.com
Sat May 10 23:10:10 CDT 2014
On Tue, Apr 29, 2014 at 08:31:35PM -0500, Paul Anderson wrote:
> Crispin,
>
> Please provide some photos (recent or historic) or links to
> documents about the elongated holes.
Paul,
I found a series of articles about fabricating radiused holes, starting
at
http://metalformingmagazine.com/magazine/article.asp?iid=69&aid=6177
On the physics, I found the other day
http://nptel.ac.in/courses/Webcourse-contents/IIT-KANPUR/FLUID-MECHANICS/lecture-14/14-7_losses_sudden_contract.htm
Under the heading 'Entry Loss' there is a set of diagrams that depicts
the conditions that interest stovers. Also on the physics, I found
http://www.ivorbittle.co.uk/Books/Fluids%20book/Chapter%205%20web%20docs/Chapter%205%20Examples%20energy%20equation%20whole%20doc.htm
BTW, I found the physics resources by looking for "radiused edge fluid
flow" with Google image search. In a talk Edward Tufte gave recently in
Urbana, he suggested using image search as a first resort, because your
eye can pick out a relevant picture or diagram among hundreds faster
than you can read a similar number of web-page excerpts. The strategy
seems to work for me.
Dave
--
David Young
dyoung at pobox.com Urbana, IL (217) 721-9981
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