研究RESEARCH研究专题RESEARCH TOPIC

管道声学与声衬阻抗Duct Acoustics and Liner Impedance

2026-09-10作者 · 气动声学与湍流实验室Aeroacoustics and Turbulence Laboratory原始页面Original page ↗

中频声学FEA–SEA 耦合深度学习Mid-frequency acousticsFEA–SEA couplingDeep learning

科学问题QUESTION

如何描述复杂管道中的声音传播，并从有流测量中推断声衬阻抗？

How can sound propagation in complex ducts be modelled and liner impedance inferred under grazing flow?

研究方法METHOD

一条路线以阻抗连接有限元与统计能量子系统；另一条路线将有限元数据与混合神经网络结合，用于声衬阻抗推断。

One route couples finite-element and statistical-energy subsystems through impedance; another combines finite-element data with a mixed neural network for liner impedance eduction.

验证证据EVIDENCE

变截面管道方法包含消声室实验验证；阻抗推断方法使用不同声衬模型及 NASA 实验数据评估。

The variable-section duct method includes anechoic-chamber validation. Impedance eduction is evaluated with multiple liner models and NASA experimental data.

METHOD & CONTEXT

我们如何研究How we investigate

将耦合界面动态缩聚为单自由度阻抗，连接确定性有限元与统计能量子系统，并开展消声室实验验证。

基于有限元生成训练数据，使用混合神经网络反演声衬阻抗，并以不同声衬模型及 NASA 实验数据评估方法。

Dynamic condensation of the coupling interface to a single-degree-of-freedom impedance connects finite-element and statistical-energy subsystems, with experimental validation in an anechoic chamber.

Finite-element training data and a mixed neural network enable liner impedance eduction, evaluated with multiple liner models and NASA experimental data.

VISUAL EVIDENCE

计算与分析图像Computational evidence

图1 声学管道结构。来源：气动声学与湍流实验室公众号。 / Acoustic duct geometry (source Fig. 1). — 01图1 声学管道结构。来源：气动声学与湍流实验室公众号。Acoustic duct geometry (source Fig. 1).

图4 声学管道实验系统。来源：气动声学与湍流实验室公众号。 / Acoustic duct experimental system (source Fig. 4). — 02图4 声学管道实验系统。来源：气动声学与湍流实验室公众号。Acoustic duct experimental system (source Fig. 4).