An experimental study of the sound emitted from gas bubbles in a liquid
An experimental study of the sound emitted from gas bubbles in a liquid
An undergraduate-level experiment is described for studying the sound emitted from bubbles formed by blowing gas through nozzles located within the bulk of a liquid. Hydrophone records give the frequency, pressure amplitude, and decay characteristics of the sound produced by a single bubble. The measured frequency agreed with the natural oscillation frequency of the bubble (the Minnaert frequency); the pressure amplitude gives the amplitude of oscillation of the bubble wall; the decay time broadly agrees with the value expected for radiative acoustic damping and thermal damping. The underwater sounds produced by natural brooks were recorded and found predominantly to consist of a succession of Minnaert-like oscillations, thereby allowing the bubble-size distributions to be obtained from the sound spectra.
98-104
Leighton, Timothy G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Walton, Alan J.
5ed29131-299d-4166-aaf8-cb0333dfb361
1987
Leighton, Timothy G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Walton, Alan J.
5ed29131-299d-4166-aaf8-cb0333dfb361
Leighton, Timothy G. and Walton, Alan J.
(1987)
An experimental study of the sound emitted from gas bubbles in a liquid.
European Journal of Physics, 8 (2), .
(doi:10.1088/0143-0807/8/2/005).
Abstract
An undergraduate-level experiment is described for studying the sound emitted from bubbles formed by blowing gas through nozzles located within the bulk of a liquid. Hydrophone records give the frequency, pressure amplitude, and decay characteristics of the sound produced by a single bubble. The measured frequency agreed with the natural oscillation frequency of the bubble (the Minnaert frequency); the pressure amplitude gives the amplitude of oscillation of the bubble wall; the decay time broadly agrees with the value expected for radiative acoustic damping and thermal damping. The underwater sounds produced by natural brooks were recorded and found predominantly to consist of a succession of Minnaert-like oscillations, thereby allowing the bubble-size distributions to be obtained from the sound spectra.
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Published date: 1987
Organisations:
Acoustics Group
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Local EPrints ID: 349435
URI: http://eprints.soton.ac.uk/id/eprint/349435
ISSN: 0143-0807
PURE UUID: 9c533303-7609-4845-a778-31e43397924f
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Date deposited: 05 Mar 2013 13:58
Last modified: 15 Mar 2024 02:45
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Author:
Alan J. Walton
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