SOUND-ATTENUATION IN RECTANGULAR AND CIRCULAR CROSS-SECTION DUCTS WITH FLOW AND BULK-REACTING LINER

被引：24

作者：

BIES, DA

HANSEN, CH

BRIDGES, GE

机构：

[1] Department of Mechanical Engineering, University of Adelaide, Adelaide, SA 5001

来源：

JOURNAL OF SOUND AND VIBRATION | 1991年 / 146卷 / 01期

关键词：

Flow of Fluids;

D O I：

10.1016/0022-460X(91)90522-L

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A generalized theory is presented for sound propagation in lined ducts of arbitrary cross-section where acoustic wave propagation in the lining is also taken into account. The effects of a mean fluid flow in the duct airway, an anisotropic bulk reacting liner and a limp, impervious membrane covering the liner are all taken into account. Simple extension of the formalism to include the effect of a perforated facing is also provided. Bulk reacting and locally reacting liners are treated as limiting cases. The general analysis is pplied to ducts of both rectangular and circular cross-section, taking into account higher order modes as well as plane wave sound propagation. Design charts for duct attenuation in octave frequency band averages and in terms of dimensionless parameters are presented. © 1991.

引用

页码：47 / 80

页数：34

共 12 条

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