Measurements and analysis of farfield scattering from a prolate spheroid
作者:
A. Bayliss,
L. Maestrello,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1978)
卷期:
Volume 64,
issue 3
页码: 896-900
ISSN:0001-4966
年代: 1978
DOI:10.1121/1.382049
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The farfield acoustic scattering by a prolate spheroid with axial point sources near the tip of the body was measured. Data were taken forkabetween 10 and 160, whereais the semimajor axis of the spheroid. Comparisons were made with numerical results obtained by an integral equation based on the simple‐source method, with appropriate coordinate stretching introduced to permit high‐frequency solutions with a minimal number of grid points. Theory and experiment agree within experimental error except for the highest frequencies in the shadow region, where very rapid changes in pressure make precise measurements difficult. The results show that for frequencies of aeroacoustic interest, the scattered field is very large and cannot be ignored.
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