Page 122 - 《应用声学》2021年第3期

第 40 卷 第 3 期 Vol. 40, No. 3
2021 年 5 月 Journal of Applied Acoustics May, 2021

⋄ 研究报告 ⋄

半波长管传声损失分析 ∗

王 恒 毛崎波 † 胡龙轩 王渊德 谢 冉

(南昌航空大学飞行器工程学院 南昌 330063)

摘要：1/4 波长管和 Herschel-Quincke(HQ) 管具有良好消声潜力，在其固有频率附近具有很高的消声量级，为
了将这种消声潜力在更小的安装空间内和更宽的频带上发挥出来，设计了一种新的半波长管，通过对多管传
声损失理论模型的推导，运用数值计算的方法，分析了传声损失的影响因素并对多分支管模型进行宽频带尺
寸设计，最终实现在 350 ∼ 1350 Hz 的宽频带的消声效果，并且通过实验验证了理论模型，同时利用实验数据
对管端进行修正，结果证实了理论是正确的。所设计的多分支半波长管可以在复杂的应用场景进行灵活的结
构设计，所以在航空发动机降噪、汽车尾气降噪和工厂排气降噪等领域具有更好的适应性和良好的应用前景。
关键词：半波长管；传声损失；宽频带降噪
中图法分类号: O429 文献标识码: A 文章编号: 1000-310X(2021)03-0440-09
DOI: 10.11684/j.issn.1000-310X.2021.03.016

Analysis of sound transmission loss for half wavelength tube

WANG Heng MAO Qibo HU Longxuan WANG Yuande XIE Ran

(School of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, China)

Abstract: The quarter wave tube and Herschel-Quincke (HQ) tube have shown promising noise reduction
performance near their natural frequency. In order to provide a simplified device geometry which can be
easily manufactured and implemented and wide the absorbing frequency band, a new half wavelength tube is
presented in this study. A theoretical model for the transmission loss spectra of the half wavelength tube have
been derived, then the physical parameter effect on sound transmission loss are numerical analyzed. Finally,
the half wavelength tubes are optimized to control the wide-band frequency range from 350 Hz to 1350 Hz, at
the same time, the theoretical model is verified through experiments and the pipe end is corrected through data
collected, and the results demonstrate that the theory is correct. The designed multi-branch half wavelength
tube can be used in complex application scenarios for flexible structural design, so it has better adaptability
and good application prospects in the fields of aero-engine noise reduction, automobile exhaust noise reduction
and factory exhaust noise reduction.
Keywords: Half wavelength tube; Sound transmission loss; Broadband noise reduction

2020-08-03 收稿; 2020-12-09 定稿
∗ 国家自然科学基金资助项目 (51975266), 江苏省六大人才高峰资助项目 (KTHY-036), 江西省自然科学基金项目 (20192BAB206024),
江西省研究生创新专项资金项目 (YC2020-S545)
作者简介: 王恒 (1993– ), 男, 山东枣庄人, 硕士研究生, 研究方向: 噪声与振动控制。
† 通信作者 E-mail: qbmao@nchu.edu.cn