A finite element model of sound propagation in flow duct with its application to linear optimization

LU Zhen-bo; JING Xiao-dong; SUN Xiao-feng

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A finite element model of sound propagation in flow duct with its application to linear optimization

更新时间：2026-07-07

- A finite element model of sound propagation in flow duct with its application to linear optimization
- Vol. 22, Issue 8, (2007)
- 作者机构：
  
  北京航空航天大学, 能源与动力工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2007
- 稿件说明：
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LU Zhen-bo, JING Xiao-dong, SUN Xiao-feng. A finite element model of sound propagation in flow duct with its application to linear optimization[J]. 2007, 22(8).
DOI：

LU Zhen-bo, JING Xiao-dong, SUN Xiao-feng. A finite element model of sound propagation in flow duct with its application to linear optimization[J]. 2007, 22(8). DOI：

摘要

以航空发动机消声短舱声学设计为目标

发展了一种管道声传播有限元模型

它包含了壁面声阻抗、管道截面积和形状变化、以及管内非均匀流动等典型影响因素.应用该模型针对一种真实的高速转子声源进行了管道消声的数值模拟

不仅得到了细致的管内声场分布情况

更利用其快速的特点完成了声衬声阻抗的优化计算.结果表明该模型具有工程应用价值.

Abstract

A finite element model is presented for sound propagation in a flow duct with an acoustic liner

which incorporates the major practical effects of wall impedance

variable duct geometry and non-uniform flow.This model is applied to simulate the duct liner effect on reducing the noise of a real high-speed rotor.Both the distribution andreduction of the sound pressure inside the duct and the optimized liner impedance are obtained.The results show that the present model can be used for the design purpose of a duct liner in the practical engineering applications.

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Related Author

WANG Guang-fa

JING Xiao-dong

SUN Xiao-feng

LI Xiao-feng

WANG Tong-qing

SHI Wei

HU Tingxun

ZHOU Kun

Related Institution

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics

中国航空发动机集团有限公司商用航空发动机有限责任公司外部与短舱系统部

中北大学机械工程学院

东北大学机械工程与自动化学院

沈阳工业大学机械工程学院

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