基于传递单元方法的局域反应声衬设计与试验

doi:10.7527/S1000-6893.2018.22053

流体力学与飞行力学

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基于传递单元方法的局域反应声衬设计与试验

李志彬, 王叙理, 王晓宇, 孙晓峰

北京航空航天大学能源与动力工程学院, 北京 100083

收稿日期:2018-01-26 修回日期:2018-04-09 出版日期:2018-08-15 发布日期:2018-04-09
通讯作者: 王晓宇 E-mail:bhwxy@buaa.edu.cn
基金资助:
国家自然科学基金（51676008，51706007）

Design of locally reacting liner based on transfer element method and experimental validation

LI Zhibin, WANG Xuli, WANG Xiaoyu, SUN Xiaofeng

School of Energy and Power Engineering, Beihang University, Beijing 100083, China

Received:2018-01-26 Revised:2018-04-09 Online:2018-08-15 Published:2018-04-09
Supported by:
National Natural Science Foundation of China (51676008, 51706007)

摘要/Abstract

摘要： 航空声衬的优化设计是指在发动机管道结构内铺设具有最优阻抗的声衬，以达到最大降噪效果，此过程一般需要对目标进行全尺寸的模拟计算。应用传递单元方法对单级低速轴流压气机试验台进行局域反应声衬的优化设计，并进行声衬消声效果的试验验证。试验结果显示，在设计频率下局域反应声衬对目标模态有良好的降噪效果，传声损失达到44.01 dB，而且具有一定的宽频降噪特性。利用传递单元方法计算的传声损失与实际测试结果趋势一致，声衬的实际降噪效果满足设计需求。研究表明，传递单元方法作为一种快速声学计算方法，适用于管道声传播的全尺寸理论评估，能够有效降低航空声衬的设计周期和成本，适合于工程应用。

关键词: 传递单元方法, 轴流压气机, 局域反应声衬, 管道模态测量, 传声损失

Abstract: Optimization of aero-engine nacelle liners means laying the acoustic liners with the optimum impedance in the duct to minimize the noise level. The process usually needs a numerical calculation of the full-sized target. In this paper, an optimization of the locally reacting acoustic liner for the single-stage low-speed axial compressor is carried out based on the transfer element method, and is verified experimentally. It is found that the locally reacting liner has significant effect on noise reduction of target mode. The transmission loss is 44.01 dB, and the liner exhibits certain characteristics of broadband noise reduction. The experimental results are consistent with the calculation results. The actual noise reduction effect of the liner meets the design requirement, showing that the transfer element method as a fast calculation method is applicable for liner design and optimization. The method can reduce the design cost and cycle of aero-engine nacelle liners, and is suitable for engineering application.

Key words: transfer element method, axial compressors, locally reacting liner, mode measurement of duct, transmission loss

中图分类号:

V235.13

李志彬, 王叙理, 王晓宇, 孙晓峰. 基于传递单元方法的局域反应声衬设计与试验[J]. 航空学报, 2018, 39(8): 122053-122053.

LI Zhibin, WANG Xuli, WANG Xiaoyu, SUN Xiaofeng. Design of locally reacting liner based on transfer element method and experimental validation[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(8): 122053-122053.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

基于传递单元方法的局域反应声衬设计与试验

Design of locally reacting liner based on transfer element method and experimental validation

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