Reflection of waves from a point source by an impedance boundary
作者:
Sven‐Ingvar Thomasson,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1976)
卷期:
Volume 59,
issue 4
页码: 780-785
ISSN:0001-4966
年代: 1976
DOI:10.1121/1.380943
出版商: Acoustical Society of America
关键词: 2840;2015;2030;2055
数据来源: AIP
摘要:
The problem of finding a solution of the scalar wavefield produced by a point source in the presence of an infinite ’’impedance’’ boundary is treated. The analysis is made with a method used by Ingard, which has been corrected. It is shown that it is possible to rewrite the exact solution in terms of a single integral along a steepest‐descent contour and a Hankel function. Asymptotical expansions of the solution is in consistency with expansions by Wenzel, who found that in a special case expansions of his and Ingard’s solution differ by a ’’surface wave’’ term. The asymptotical expansions are given as examples. The main result, the single integral and the Hankel function, could easily be integrated numerically.Subject Classification: [43]28.40; [43]20.15, [43]20.30, [43]20.55.
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