Acoustic radiation efficiency of a periodically corrugated rigid piston

被引：8

作者：

Estrada, Hector ^{[1
,2
]}

Uris, Antonio ^{[1
]}

Meseguer, Francisco ^{[1
,2
]}

机构：

[1] Univ Politecn Valencia, Ctr Tecnol Fis, Unidad Asociada ICMM CSIC UPV, Valencia 46022, Spain

[2] Inst Ciencia Mat Madrid CSIC, Madrid 28049, Spain

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 10期

关键词：

ARRAYS; TRANSDUCERS; DESIGN;

D O I：

10.1063/1.4748868

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The radiation of sound by a periodically corrugated rigid piston is explored using theoretical and numerical approaches and compared with the radiation of flat rigid piston. The depth and the period of the corrugation are considered to be comparable with the wavelength in the surrounding fluid. Radiation enhancement is predicted due to cavity resonances and coherent diffraction. In addition, broad regions of low radiation efficiency are observed. Both effects could have an impact in acoustic transducers technology, either to increase the piston radiated power or to create a source of evanescent acoustic waves. The possibilities offered by this strategy in the nonlinear acoustic regime are also briefly discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4748868]

引用

页数：4

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