On the excitation of a closely spaced array by a line source

被引:13
|
作者
Thompson, I. [1 ]
Linton, C. M. [1 ]
机构
[1] Loughborough Univ Technol, Dept Math Sci, Loughborough, Leics, England
基金
英国工程与自然科学研究理事会;
关键词
array scanning method; line source; multiple scattering; periodic array; Rayleigh-Bloch surface wave;
D O I
10.1093/imamat/hxm014
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
An infinite row of periodically spaced, identical rigid circular cylinders is excited by an acoustic line source which is parallel to the generators of the cylinders. A method for calculating the scattered field accurately and efficiently is presented. When the cylinders are sufficiently close together, Rayleigh-Bloch surface waves that propagate energy to infinity along the array are excited. An expression is derived which enables the amplitudes of these surface waves to be computed without requiring the solution to the full scattering problem.
引用
收藏
页码:476 / 497
页数:22
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