Modelling biological phenomena with rocket balloon buzz

Abstract eng:
The flow of air through the exit tube of a rocket balloon produces a characteristic buzzing sound. It provides a novel fluid structure interaction problem that is investigated experimentally. The work is a part of ongoing efforts to better understand the mechanisms of sound production in diseased lungs, and so allow more specific diagnoses to be made using auscultation. The buzzing sound from a rocket balloon is produced by a large-amplitude oscillation of the exit tube. Scaling laws are desired for the dominant frequency of oscillations and for the critical speed for the onset of oscillations.

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