Page 52 - 《应用声学》2021年第2期

第 40 卷 第 2 期 Vol. 40, No. 2
2021 年 3 月 Journal of Applied Acoustics March, 2021

⋄ 研究报告 ⋄

汽车涡轮增压器同步谐波噪声仿真与优化 ∗

凌 旭 1† 黄守辉 2 肖 芝 1 刘 敏 3

(1 湖南化工职业技术学院 株洲 412000)
(2 吉利汽车研究总院 宁波 315336)

(3 拾音汽车科技有限公司 上海 201800)
摘要：针对增压发动机急加速急减速时产生的增压器同步谐波噪声问题，该文通过噪声仿真技术进行分析与
优化。首先，分析该噪声的特征与传播路径；其次，建立流场仿真模型。利用剪切应力输运湍流模型与分离涡
流模拟湍流模型对增压器进行稳态与非稳态瞬态流场分析，提取非稳态流场的叶轮与压气机流道表面的偶极
子声源；最后，建立噪声传播模型，计算该增压器压气机的进气口声场分布。通过理论分析与试验相结合的方
法，优化叶轮轮缘与压气机壳体的配合型线，将该增压器噪声的阶次峰值最大降低约 15.3 dB(A)，消除了同步
谐波噪声，且对发动机性能几乎无影响。该噪声的解决方法可以为压气机气动噪声优化提供有价值的参考。
关键词：内燃机；涡轮增压；气动噪声仿真；谐波噪声；声类比
中图法分类号: TK464 文献标识码: A 文章编号: 1000-310X(2021)02-0220-07
DOI: 10.11684/j.issn.1000-310X.2021.02.007

Simulation optimization of synchronous harmonic noise in automobile

turbocharger

LING Xu 1 HUANG Shouhui 2 XIAO Zhi 1 LIU Min 3

(1 Hunan Chemical Vocational Technology College, Zhuzhou 412000, China)
(2 Geely Automobile Research Institute, Ningbo 315336, China)
(3 Scattered Automobile Technology Co., Ltd., Shanghai 201800, China)
Abstract: In order to study synchronous harmonic noise of turbocharger caused by rapid acceleration and
deceleration of engine, this paper analyzes and optimizes the noise simulation technology. Firstly, the charac-
teristics and propagation path of synchronous harmonic noise were analyzed. Secondly, the flow field simulation
model was established. Shear stress transport (SST) turbulence model and detached eddy simulation (DES)
turbulence model were used to analyze the steady and unsteady transient flow field of compressor, and the
dipole sound source on the flow channel surface of impeller and compressor was extracted in the unsteady
flow field. Finally, noise propagation model was established, and inlet sound field distribution of compressor
simulations was implemented. With the theoretical analysis and experimental method, it shows that the peak
of the impeller order noise was reduced by about 15.3 dB(A) and eliminated synchronous harmonic noise by
optimization of fit profile between impeller flange and housing. Besides, it almost has no effect on the engine
performance. This study enriches the methods of research on optimization of compressor’s aerodynamic noise
and provides a useful reference for others.
Keywords: Combustion engine; Turbocharger; Aero dynamic noise simulation; Harmonic noise; Acoustic
analogy

2020-05-11 收稿; 2020-07-15 收稿
湖南省教育厅科学研究项目 (19C0640)
∗
作者简介: 凌旭 (1988– ), 男, 湖南衡阳人, 硕士, 讲师, 工程师, 研究方向: 计算机辅助测试理论, 汽车 NVH 噪声技术。
† 通信作者 E-mail: 247080185@qq.com