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Measurements on tones generated in a corrugated flow pipe with special attention to the influence of a low frequency oscillation

It is well known that an air flow in a corrugated pipe might excite the longitudinal acoustic modes of the pipe. In this letter is reported experiments where a low frequency, oscillating flow with velocity magnitudes of the same order as the air flow has been added. Depending on the oscillation strength, it might silence the pipe or move the resonances to higher harmonics. It is also shown that a low frequency oscillation by itself might excite a higher frequency acoustic resonance of the pipe.

preprint2011arXivOpen access
Ulf R. KristiansenPierre-Olivier MatteiCédric PinhèdeMuriel Amielh
physics.class-ph
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Ulf R. KristiansenPierre-Olivier MatteiCédric PinhèdeMuriel Amielh

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