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Sound Dissipation by a Small Cylindrical Obstacle

 

作者: K. Attenborough,   L. A. Walker,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1972)
卷期: Volume 51, issue 1B  

页码: 192-196

 

ISSN:0001-4966

 

年代: 1972

 

DOI:10.1121/1.1912829

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

Scattering of a plane wave, obliquely incident on an infinite‐elastic conducting solid cylinder, which is freely suspended in a viscous conducting fluid, is considered. The wave motion in both fluid and solid is analyzed into viscous (shear), thermal, and dilatational components. Thus the dissipation, associated with the generation of highly damped viscous and thermal fluid waves at the boundary of the cylinder, is calculated. For a given frequency, this is shown to be a function of the cylindrical harmonic amplitudes of the scattered dilatational wave and of the angle of incidence. Results are presented for the simplified situation of normal incidence and small cylinder radius.

 

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