The attenuation of sound by turbulence in internal flows

被引：20

作者：

Weng, Chenyang ^{[1
]}

Boij, Susann ^{[1
]}

Hanifi, Ardeshir ^{[2
,3
]}

机构：

[1] KTH Royal Inst Technol, Sch Engn Sci, Marcus Wallenberg Lab Sound & Vibrat, Linne FLOW Ctr, Stockholm, Sweden

[2] KTH Royal Inst Technol, Sch Engn Sci, Dept Mech, Linne FLOW Ctr, Stockholm, Sweden

[3] Swedish Def Res Agcy, FOI, Stockholm, Sweden

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2013年 / 133卷 / 06期

基金：

瑞典研究理事会;

关键词：

ORGANIZED WAVE; LOW MACH; PROPAGATION; PIPE; MECHANICS; MODELS;

D O I：

10.1121/1.4802894

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The attenuation of sound waves due to interaction with low Mach number turbulent boundary layers in internal flows (channel or pipe flow) is examined. Dynamic equations for the turbulent Reynolds stress on the sound wave are derived, and the analytical solution to the equation provides a frequency dependent eddy viscosity model. This model is used to predict the attenuation of sound propagating in fully developed turbulent pipe flow. The predictions are shown to compare well with the experimental data. The proposed dynamic equation shows that the turbulence behaves like a viscoelastic fluid in the interaction process, and that the ratio of turbulent relaxation time near the wall and the sound wave period is the parameter that controls the characteristics of the attenuation induced by the turbulent flow. (C) 2013 Acoustical Society of America.

引用

页码：3764 / 3776

页数：13

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