Scattering of acoustic waves by a layered elastic obstacle in a fluid—An improved null field approach
作者:
Anders Boström,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1984)
卷期:
Volume 76,
issue 2
页码: 588-593
ISSN:0001-4966
年代: 1984
DOI:10.1121/1.391154
出版商: Acoustical Society of America
关键词: s matrix;sound waves;scattering;fluids;spheroids
数据来源: AIP
摘要:
Scattering by a layered elastic obstacle submerged in a fluid is considered. The null field approach (T‐matrix method) is used, but the method is modified so that all surface fields can be expanded in spherical harmonics. The resulting method is then compared with the conventional null field approach (which uses expansions in regular wavefunctions), and it is concluded that the present method is the better one in general. It is, however, doubtful if the null field approach is applicable to cases where there is no sphere that circumscribes the core and inscribes the outer surface. Some numerical results are given for a layered spheroid and superspheroid.
点击下载:
PDF
(669KB)
返 回