Multiple valves in the pipeline system belong to obvious periodic structure distribution types. When a high-speed airstream flows through the pipeline valve, it produces obvious aero-acoustic and acoustic resonance. Acoustic resonant systems with single and six-pipe valves were investigated to understand the flow and acoustic characteristics using a numerical simulation method and testing method. The strongest acoustic resonance occurred at a specific flow velocity with a corresponding Strouhal number of 0.47 corresponding to the geometric parameters in the paper. Moreover, acoustic resonance occurred in a certain velocity range, rather than increasing with the increase of the velocity of the pipeline. This regular increase provided an important theoretical basis for the prediction of the acoustic resonant and ultimate acoustic load of a single-valve system. When the pipeline was attached with multiple valves and the physical dimension was large, the conventional aero-acoustics calculation results were seriously attenuated at high frequency; the calculation method involving a cut-off frequency in this paper was presented and could be used to explain the excellent agreement of the sound pressure level (SPL) below the cut-off frequency and the poor agreement above the cut-off frequency. A new method involving steady flow and stochastic noise generation and radiation (SNGR) was proposed to obtain better results for the SPL at the middle and high frequencies. The comparison results indicated that the traditional method of Lighthill analogy and unsteady flow could accurately acquire aerodynamic noise below the cut-off frequency, while the new method involving steady flow and SNGR could quickly acquire aerodynamic noise above the cut-off frequency.

管道系统中的多个阀门属于明显的周期性结构分布类型。当高速气流流经管道阀门时，会产生明显的气动声学和声学共振。使用数值模拟方法和测试方法研究了具有单管和六管阀的声共振系统，以了解流动和声学特性。最强的声共振发生在特定流速下，相应的 Strouhal 数为 0.47，对应于论文中的几何参数。而且，声共振发生在一定的速度范围内，而不是随着管道速度的增加而增加。这种规律性的增加为单阀系统的声共振和极限声载荷的预测提供了重要的理论依据。当管道连接多个阀门且物理尺寸较大时，常规气动声学计算结果高频衰减严重；本文提出了涉及截止频率的计算方法，可用于解释截止频率以下声压级 (SPL) 的良好一致性和截止频率以上的较差一致性。提出了一种涉及稳定流和随机噪声生成和辐射 (SNGR) 的新方法，以获得更好的中高频声压级结果。