A Multi-Pole Expansion Method for the Radiation Sound Field of Rotating Thin-Walled Shell

doi:10.7652/xjtuxb201407018

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A Multi-Pole Expansion Method for the Radiation Sound Field of Rotating Thin-Walled Shell

更新时间：2025-07-09

- A Multi-Pole Expansion Method for the Radiation Sound Field of Rotating Thin-Walled Shell
- Vol. 48, Issue 7, Pages: 102-108(2014)
- 作者机构：
  
  西安交通大学机械工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201407018
  CLC： TB532
- Online First：10 July 2014，
  
  Published：2014
- 稿件说明：
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A Multi-Pole Expansion Method for the Radiation Sound Field of Rotating Thin-Walled Shell[J]. 2014, 48(7): 102-108.
DOI：

A Multi-Pole Expansion Method for the Radiation Sound Field of Rotating Thin-Walled Shell[J]. 2014, 48(7): 102-108. DOI： 10.7652/xjtuxb201407018.

摘要

针对旋转机械噪声问题

在旋转单极子声源和偶极子声源辐射声场频域解的基础上

基于这两种简单旋转声源的研究思路和方法

利用声学互易定理推导出了简单封闭薄壁球壳作旋转运动时的空间辐射声场的计算方法

以一具体的封闭薄壁球壳为对象对旋转运动进行了实例计算。在此基础上

利用覆盖域的思想

给出了一种可以计算任意复杂形状封闭薄壳在旋转运动时空间辐射声场的方法。所提方法可为研究气动噪声产生机理及定量分析提供可借鉴的思路

为旋转机械噪声的控制及优化提供了一种方法。

Abstract

The acoustic reciprocity theorem is used to derive a formula of space radiation sound field for a simple closed thin-walled shell in rotary motion. The derivation is based on the radiation sound field frequency domain solution of rotating monopole sound source and dipole sound source. The present method is used to calculate the rotational motion of a closed thin-walled shell. Then a method to calculate space radiation sound field of arbitrary-shaped closed thin-walled shell in the rotational motion is given by using the covering-domain method. This study may facilitate the researches on generation mechanism

quantitative analysis and control of aerodynamic noises.

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references

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