Searching for the second harmonic
作者:
R. Glynn Holt,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1994)
卷期:
Volume 96,
issue 1
页码: 594-596
ISSN:0001-4966
年代: 1994
DOI:10.1121/1.410448
出版商: Acoustical Society of America
关键词: BUBBLES;ACOUSTIC EMISSION;HARMONICS;MECHANICAL VIBRATIONS;MATHEMATICAL MODELS;NONLINEAR ACOUSTICS
数据来源: AIP
摘要:
To mathematically model the oscillations of a spherical bubble, either the time‐dependent volumeV(t) or the radiusR(t) can be used as the dependent variable. A recent exchange between the advocates of the volume approach [E. A. Zabolotskaya, J. Acoust. Soc. Am.94, 2448 (1993)] and the radius approach [J. Wu and G. Du, J. Acoust. Soc. Am.94, 2446 (1993)] concerns an apparent discrepancy in the predicted nonlinear acoustic emissions from a bubble subject to a time‐periodic external pressure field. This Letter attempts to resolve the discrepancy via an examination of the arguments offered by both sides. In addition, some general comments on nonlinear harmonic and subharmonic emissions from acoustically forced bubble oscillations are presented.
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