Publication: Low frequencies and growth of oscillations in a Rijke tube
Date
01-01-2007
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Abstract
Experiments were conducted in a Rijke tube by varying the surface roughness of the walls, the heat transfer to the air in the tube and by placing a conical horn at the open end of the tube. A sub-harmonic frequency, corresponding to the open end acting partially as a closed end, was shown to be present. Placement of a horn at the open end prevented the tube from sounding. The influence of the roughness of the walls on the pressure oscillations is discussed. ©Freund Publishing House Ltd.
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Keywords
Combustion instability, Rijke tube, Standing waves, Thermo-acoustics