论文标题
通过单个光圈的声学散射和场增强
Acoustic scattering and field enhancement through a single aperture
论文作者
论文摘要
我们在这项工作中通过有限厚度的硬板中的圆形孔研究声场的增强。我们得出了与声学散射相对应的边界综合方程，以研究诱导场增强的Fabry-Perot类型谐振频率。 Fabry-Perot类型共振相对于孔的尺寸的渐近膨胀是得出的，并且在共振频率下由配置引起的场增强的定量分析均以增强顺序和共振模式的形状表现出来。还研究了非谐波准静态策略中的传播。
We study the acoustic field enhancement through a circular hole in a hard plate of finite thickness in this work. We derive the boundary-integral equations corresponding to the acoustic scattering to investigate the Fabry-Perot type resonant frequencies that induce the field enhancement. The asymptotic expansions of Fabry-Perot type resonances with respect to the size of the hole are derived, and the quantitative analysis of the field enhancement caused by the configuration at the resonant frequencies is presented with both the enhancement order and the shapes of resonant modes characterized. The transmission in the nonresonant quasi-static regime is also investigated.
