Strong fluctuation theory for a mean acoustic field in a random fluid medium with statistically anisotropic perturbations
作者:
Nickolay P. Zhuck,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1996)
卷期:
Volume 99,
issue 1
页码: 46-54
ISSN:0001-4966
年代: 1996
DOI:10.1121/1.415221
出版商: Acoustical Society of America
关键词: CALCULATION METHODS;COMPRESSIBILITY;MEAN−FIELD THEORY;MULTIPLE SCATTERING;SOUND WAVES;UNDERWATER
数据来源: AIP
摘要:
The problem of linear propagation of a time‐harmonic acoustic field in an infinite statistically homogeneous fluid is considered. The aim of this investigation is to calculate the effective constitutive parameters which determine the properties of a random fluid with respect to the mean field for the case of strong fluctuations of density and compressibility. This is achieved by using a bilocal approximation and a renormalization method. Special emphasis of the present paper is devoted to statistically anisotropic perturbations. It is shown, through analytic examples, that the statistical anisotropy of strong density fluctuations essentially modifies the random medium effective properties compared to the case of statistically isotropic perturbations, and has a significant effect on propagation characteristics of the mean acoustic field.
点击下载:
PDF
(286KB)
返 回