EFFECTS OF FLOW ON THE PERFORMANCE OF A REACTIVE ACOUSTIC ATTENUATOR

被引：13

作者：

FULLER, CR ^{[1
]}

BIES, DA ^{[1
]}

机构：

[1] UNIV ADELAIDE,DEPT MECH ENGN,ADELAIDE 5000,S AUSTRALIA,AUSTRALIA

来源：

JOURNAL OF SOUND AND VIBRATION | 1979年 / 62卷 / 01期

关键词：

D O I：

10.1016/0022-460X(79)90558-3

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The effects of flow on the performance of a reactive acoustic attenuator discussed in a previous paper are investigated theoretically and experimentally. The attenuator is analyzed by using recently developed curved duct equations with flow. Theoretical predictions are obtained for the pressure reflection coefficient, the power reflection and transmission coefficient and the transmission loss of the attenuator, at varying flow Mach numbers. The two cases of sound propagating with and against the flow are discussed and good agreement is obtained with experimental measurements. Small discrepancies between prediction and measurement are discussed. Convection of the propagating medium is found to significantly alter the operating characteristics of the attenuator. © 1979.

引用

页码：73 / 92

页数：20

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