Research on Influence of Non-harmonic Splitter Blade on Aerodynamic Noise Characteristics of Centrifugal Compressor Impeller

LIANG Chunjuan; TANG Xinzi; JIN Shaozhe

doi:10.19805/j.cnki.jcspe.2024.230708

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Research on Influence of Non-harmonic Splitter Blade on Aerodynamic Noise Characteristics of Centrifugal Compressor Impeller

更新时间：2026-02-05

- Research on Influence of Non-harmonic Splitter Blade on Aerodynamic Noise Characteristics of Centrifugal Compressor Impeller
- Chinese Journal of Power Engineering Vol. 45, Issue 1, Pages: 70-79(2025)
- 作者机构：
  
  湘潭大学机械工程与力学学院,湖南,湘潭,411105
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2024.230708
  CLC： TH452;TB53
- Online First：15 January 2025，
  
  Published：2025
- 稿件说明：
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梁春娟,唐新姿,金绍哲. 分流叶片非谐对离心压气机叶轮气动噪声特性的影响研究动力工程学报, 2025, 45(1): 70-79 https://doi.

org/10.19805/j.cnki.jcspe.2024.230708
梁春娟,唐新姿,金绍哲. 分流叶片非谐对离心压气机叶轮气动噪声特性的影响研究动力工程学报, 2025, 45(1): 70-79 https://doi. DOI： 10.19805/j.cnki.jcspe.2024.230708.

org/10.19805/j.cnki.jcspe.2024.230708 DOI：

摘要

为探讨非谐设计在分流叶片离心叶轮上的可行性及气动降噪程度

以离心压气机叶轮为研究对象

采用全流道非定常数值模拟和FW-H气动噪声模型

对比分析了4种分流叶片非谐叶轮和原始均匀叶轮的气动噪声特性

通过叶片表面压力脉动频谱特性和湍动能分布揭示了非谐设计对气动噪声的影响机理。结果表明:分流叶片周向角非谐设计在保证气动性能的同时

可以降低离散单音噪声;在采用的对比方案中

叶轮A1降噪效果最为明显

在第1、2和3阶处叶片通过频率的声谱密度分别下降43百分点、44百分点和50百分点

对应的压力脉动幅值分别下降25百分点、25百分点和30百分点

同时宽频噪声水平相比原始均匀叶轮明显增加。

Abstract

In order to investigate the feasibility and noise reduction degree of non-harmonic design on centrifugal impeller

aerodynamic noise characteristics of four kinds of diffused vane non-harmonic impels and original uniform impels were compared and analyzed by using unsteady numerical simulation and FW-H aerodynamic noise model. The influence mechanism of non-harmonic design on aerodynamic noise was revealed through the spectrum characteristics of pressure pulsation and turbulent kinetic energy distribution of blade surface. Results show that the circumferential angular non-harmonic design of splitter blade can reduce the discrete monophonic noise while ensuring the aerodynamic performance. In the comparison schemes adopted

the noise reduction effect of impeller A1 is the most obvious. At the 1st

2nd and 3rd order

the sound spectral density of the blade passing frequency decreases by 43 percentage points

44 percentage points and 50 percentage points respectively

and the corresponding pressure pulsation amplitude decreases by 25 percentage points

25 percentage points and 30 percentage points respectively. At the same time

the broadband noise level increases significantly compared with the original uniform impeller.

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references

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