The acoustic signature of bubbles fragmenting in sheared flow | Zendy

Grant B. Deane | Zendy; M. Dale Stokes | Zendy

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The acoustic signature of bubbles fragmenting in sheared flow

Author(s) -

Grant B. Deane,

M. Dale Stokes

Publication year - 2006

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.2364466

Subject(s) - amplitude , sound pressure , acoustic radiation , radius , mechanics , materials science , scaling , range (aeronautics) , acoustics , physics , radiation , optics , geometry , computer security , mathematics , computer science , composite material

Measurements of the sound of bubbles fragmenting in fluid shear are presented and analyzed. The frequency, amplitude, and decay rate of the acoustic emissions from 1.8-mm-radius bubbles fragmenting between opposed fluid jets have been determined. A broad band of frequencies (1.8 to 30 kHz) is observed with peak pressure amplitudes in the range of 0.03 to 2 Pa. While the peak pressure amplitudes show no significant scaling with frequency, the frequency dependence of the decay rates is consistent with the sum of thermal and acoustic radiation losses.

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