Making wind chimes out of copper pipe, determining length needed?
Friday, March 12th, 2010 at
4:23 am
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Tagged with: 8d • denominator • diameter • google • math • physics project • pipes • script type • speed of sound • text javascript • wind chimes
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I’m not sure about your end correction. I thought for an open pipe it was about d/6 at one end. You have a correction at both ends which would be 0.33d not 0.8d.
But things may be more complicated, because of the vibrations in the pipe may be coupled to the vibrations of the air inside, which will change the frequency.
The practical thing to do is measure the frequencies that you have with a musical instrument tuner, then adjust the lengths as required. Then try to understand what was wrong with the theory!
There seems to be a lot of information about wind chimes here:
http://home.fuse.net/engineering/Chimes.htm