Acoustic modal analysis and pressure transducer array measurements of flow induced acoustic resonances in tandem deep cavities

ZHANG Zhengfan; WANG Peng; WANG Weizhe; LIU Yingzheng

doi:10.7638/kqdlxxb-2021.0275

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Acoustic modal analysis and pressure transducer array measurements of flow induced acoustic resonances in tandem deep cavities

更新时间：2026-05-28

- Acoustic modal analysis and pressure transducer array measurements of flow induced acoustic resonances in tandem deep cavities
- Vol. 41, Issue 1, Pages: 93-100(2023)
- 作者机构：
  
  1. 上海交通大学机械与动力工程学院叶轮机械研究所,上海,200240
  2. 上海交通大学燃气轮机研究院,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2021.0275
  CLC： O424;TB52
- Published：2023
- 稿件说明：
移动端阅览
张正凡, 王鹏, 王炜哲, 等. 串列深腔流致声共鸣特性研究[J]. 空气动力学学报, 2023, 41(1): 93−100.

ZHANG Zhengfan, WANG Peng, WANG Weizhe, et al. Acoustic modal analysis and pressure transducer array measurements of flow induced acoustic resonances in tandem deep cavities[J]. 2023, 41(1): 93-100.
张正凡, 王鹏, 王炜哲, 等. 串列深腔流致声共鸣特性研究[J]. 空气动力学学报, 2023, 41(1): 93−100. DOI： 10.7638/kqdlxxb-2021.0275

ZHANG Zhengfan, WANG Peng, WANG Weizhe, et al. Acoustic modal analysis and pressure transducer array measurements of flow induced acoustic resonances in tandem deep cavities[J]. 2023, 41(1): 93-100. DOI： 10.7638/kqdlxxb-2021.0275.

摘要

深腔结构在管路中串列布置时会形成强烈的声学耦合效应，内部存在固有声学驻波模态等特征。尤其是当主管路流体掠过串列深腔结构时，前缘流动分离形成剪切涡脱，一旦与侧边腔体固有声模态达到频率锁定和相位匹配，则会产生强烈的流致声共鸣现象。本文有效结合了声模态有限元分析和传感器阵列实验测量，研究了腔体间距和来流雷诺数等对串列深腔流致声共鸣特性的影响。其中的声模态有限元分析获取了无来流状态下的串列深腔声学驻波模态的频率大小和声压空间分布；传感器阵列测量获取了来流雷诺数在（0.26～2.17）×10

之间的串列深腔壁面压力脉动的幅频信息和波形规律。研究结果表明：当串列深腔处于半波长布置时，会产生最为强烈的声共鸣现象，腔体内部声压脉动处于同相位振荡模式，同时能够诱发主管路声压与腔体声压反相位振荡；其次，当串列深腔近距离布置时，腔体内部声压脉动处于反相位振荡模式；而处于其他间距布置时，未发生明显的声共鸣现象，压力脉动幅值较低。

Abstract

Strong acoustic coupling effect is formed in tandem deep cavities

along with inherent acoustic standing wave modes in the deep cavity structure. In particular

when the main flow passes through the tandem deep cavities

the leading-edge flow separation forms shear vortex devolution. Once the frequency locked and phase matched with the natural acoustic mode of the side cavity

the strong flow-induced acoustic resonances will be generated. In this paper

the effects of cavity spacing and Reynolds number on the flow induced acoustic resonances in tandem dee

p cavities flow were studied by acoustic modal finite element analysis and sensor array experimental measurement. The acoustic mode calculation was used to obtain the frequency and sound pressure spatial distribution of the standing wave mode in the deep cavities without incoming flow. The amplitude-frequency information and waveform of pressure pulsation of a series deep cavity with Reynolds number between 0.26×10

~ 2.17×10

were obtained by sensor array plugged into the wall. The results show that the most intense acoustic resonance was generated when the deep cavities were arranged in half wavelength

and the sound pressure pulsation inside the cavity is in the same phase oscillation mode

which induces the anti-phase oscillation of the sound pressure in the main channel. Secondly

when the deep cavities were arranged in proximity

the intense sound pressure pulsation was in the anti-phase oscillation mode. However

there were only weak acoustic resonance and pressure pulsation in other arrangements.

关键词

Keywords

references

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