I have been performing some simulation tests of the gas burner that I plan to use in my loco. The idea is to use the "open smokebox" approach that Bill described some time ago. The burner is a radiant, metal fiber type. The burner produces a bright red flame and it appears to perform really well
Cremador by joan lluch, on Flickr
However, I have an issue that I did not anticipate, and I can’t figure out how to solve. The problem is that in most conditions the system produces a very loud, high pitch, resonant like noise that resembles the sound of a flute. See this video:
https://flic.kr/p/X62nzM
After some research, my understanding is that this is a relatively known problem that may happen sometimes while designing burner systems. The high pitch sound appears to be caused by some sort of combustion resonance that occurs with burners in constrained or long shaped combustion chambers. The actual phenomena is described here:
https://en.wikipedia.org/wiki/Rijke_tube
I wonder if someone has seen this issue before and whether you can point me with any tips or suggestions that I can try to avoid that.
I tried to make several changes, but so far I don't get with the proper solution.
Any ideas?
Cremador by joan lluch, on Flickr
However, I have an issue that I did not anticipate, and I can’t figure out how to solve. The problem is that in most conditions the system produces a very loud, high pitch, resonant like noise that resembles the sound of a flute. See this video:
https://flic.kr/p/X62nzM
After some research, my understanding is that this is a relatively known problem that may happen sometimes while designing burner systems. The high pitch sound appears to be caused by some sort of combustion resonance that occurs with burners in constrained or long shaped combustion chambers. The actual phenomena is described here:
https://en.wikipedia.org/wiki/Rijke_tube
I wonder if someone has seen this issue before and whether you can point me with any tips or suggestions that I can try to avoid that.
I tried to make several changes, but so far I don't get with the proper solution.
Any ideas?