可变腔亥姆霍兹管型消声器的性能研究  

Acoustic Performance of Variable Cavity Helmholtz Tube Muffler

作　　者：郭林伟[1] 李凡[1] 林基艳[2] 许龙[3] 任立庆[1] GUO Lin-wei;LI Fan;LIN Ji-yan;XU Long;REN Li-qing(School of Energy Engineering;School of Information Engineering,Yulin University,Yulin 719000,China;Department of Physics,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]榆林学院能源工程学院,陕西榆林719000 [2]榆林学院信息工程学院,陕西榆林719000 [3]中国计量大学物理系,浙江杭州310008

出　　处：《榆林学院学报》2025年第2期18-23,共6页Journal of Yulin University

基　　金：陕西省科技资源共享平台项目(2023-CX-PT-16)。

摘　　要：基于亥姆霍兹共鸣器原理,设计了一种可变腔亥姆霍兹管理消声器。采用等效电路法和声波方程对该消声器的共振频率、传声损失及消声频宽等关键参数进行理论推导,获得了其理论性能。进一步通过有限元分析法对消声器进行模态分析,并与理论结果进行对比。研究发现,仿真与理论结果在低频段存在一定的偏差,推测是由于边界条件简化及材料阻尼未完全纳入理论模型所致。为提升实际应用适配性,设计了腔体容积可调机构,以适应不同工况下的噪声控制需求。This paper employs the equivalent circuit method and the acoustic wave equation to theoretically derive the key parameters of the Helmholtz muffler,including its resonant frequency,transmission loss,and noise elimination bandwidth,thereby obtaining the theoretical performance of the muffler model designed in this study.Finite element analysis(FEA)is utilized to conduct modal analysis of the muffler,and the results are compared with the theoretical analysis(with further analysis conducted).Regarding the discrepancies observed between the simulation and theoretical results,this paper proposes possible explanations and hypotheses.Additionally,the paper discusses how to align the design with actual environmental conditions,aiming to provide guidance for practical applications.

关 键 词：亥姆霍兹消声器 等效电路法 有限元仿真 传声损失 低频噪声 

分 类 号：TB535.2[理学—物理]