Sound Scattering from a Fluid Sphere
作者:
Victor C. Anderson,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1950)
卷期:
Volume 22,
issue 4
页码: 426-431
ISSN:0001-4966
年代: 1950
DOI:10.1121/1.1906621
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The scattering of sound from a spherical fluid obstacle of size comparable to a wave‐length is considered, neglecting dissipation. Calculations of the acoustic pressure and the total energy in the scattered wave are presented graphically; sound velocities and densities of the sphere lie between 0.5 and 2.0 times that of the external medium. The limiting cases of Rayleigh scattering and scattering from a fixed rigid sphere are also shown for comparison. In the region where the diameter of the sphere is comparable to a wave‐length, the scattering is a complicated function of frequency, showing in some cases large maxima and minima. The amplitude of the scattered wave in the backward direction from a fluid sphere a few wave‐lengths in diameter exceeds twice that from a rigid sphere of the same size for the case of the sound velocity 0.8 and density equal to that of the surrounding medium.
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